Tag: Air Curtains

The Profits of Using Air Curtains in Hospitals

 

Commercial air curtains in hospital

Hospitals have challenging and crucial environments, not just for the doctors and nurses who work hard every day to save lives and provide a high standard of care but also for the patients. Managing the logistical demands of large healthcare complexes is challenging, from controlling energy usage to monitoring air quality to ensuring patients have access to food prepared in a hygienic setting. so air curtains in hospitals are great options for patients.

An air curtain, additionally regarded as an air door, is a machine that blows a managed movement of air throughout an opening to the different facets to create an air seal. Because they assist to include heated or conditioned air, they supply tremendous strength financial savings and extended non-public alleviation when utilized in industrial or industrial settings. They additionally assist to cease the infiltration of pollution and flying insects.

Do Air Curtains Keep Flies Out?

Yes! and mosquitoes, yellow jackets, and bees too. Air curtains, from time to time referred to as fly fans; furnish an excessive speed flow of air throughout a door or window opening that maintains pests like bugs from coming into the building. These flies and different small insects discover the air circulates too effectively for them to fly via and if they try, they are blown down or sideways earlier than they can enter the building.

How Do Air Curtains Work?

There are two solutions to this question, thanks to the truth that there are two wonderful sorts of air curtains. The first kind is known as a non-recirculating air curtain. These air curtains have a tendency to be the most famous amongst many organizations due to the fact they are much less high-priced to set up and value much less to maintain. The second kind is known as a recirculating air curtain. These air curtains fee greater cash to install and keep however are additionally extra effective and superb as air barriers. These air curtains have a tendency to be perfect for entrances with strangely excessive tiers of foot traffic.

Both sorts of air curtains carry air into the device via an intake grille and then use a fan to propel or speed up the air. The air passes via what is referred to as a plenum, which helps evenly distribute it and make certain a constant movement of air alongside the complete size of the air curtain. Since most air curtains are set up at the pinnacle of a door opening, the air then shoots down; masking the opening with what is, in fact, a waterfall of air.

Non-recirculating air curtains solely consist of a pinnacle unit, which sits above a door or opening and discharges air downward. Recirculating units, meanwhile, appear like high-tech doorframes or metallic detectors. They have a full rectangular or rectangular layout that spans all aspects of the door opening. This format lets in the air discharged at the pinnacle of the air curtain to be accrued at the backside of the curtain and recirculated lower back to the top.

What are the profits of using Air Curtains?

We have already touched upon the fundamentals make use of air curtains, however for a refresher; they commonly fall into three important categories:

Climate control:- Climate management is probable the pinnacle software for air curtains amongst most industrial enterprises. In groups the place human beings are continuously going in and out, or the place leaving a door open simply makes feel for enterprise purposes, there is usually the chance of warmness transfer. Both occurrences will purpose your HVAC gadget to work that ton more difficult to attain the temperature you have set on your thermostat.

Flying insect and particle control: – Flying insect and particle manipulation is brilliant as well. In the summertime, winged bugs such as flies, gnats, bees, and mosquitoes can fly thru open doorways and home windows and terrorize your personnel or customers. Air curtains let you experience a fantastic open-air sense in your institution whilst nonetheless understanding that these flying bugs are going to be blasted out of the air if they strive to go via the air curtain.

Comfort: – A Comfort Air Curtain from Biddle will grant an energy-efficient answer for your industrial requirements. An air curtain no longer acts as a bodily barrier, however stipulations incoming air and reduces the quantity of heat air escaping from the building. An air curtain ought to consequently decorate alleviation and shop energy.

Where Are Air Curtains Used?

Virtually any commercial enterprise can gain from an air curtain in one way or another. Issues such as warmth transfer flies that won’t go away, dirt or pollen, and drafty air are now not sequestered to any one industry. Instead, these problems can have an effect on any employer in any field, making the doable functions for air curtains almost unlimited.

  1. Food Service (Quick Serve, Restaurants, Schools & Cafeterias)
  2. Retail & Office
  3. Convenience & Grocery
  4. Healthcare & Hospitals
  5. Manufacturing, Warehouse & Distribution
  6. Transportation & Terminals
  7. Indoor Grow Facilities & Processing Plants
  8. Food Processing Plants
  9. Residential
  10. Aircraft Hangers

Mitzvah is provided with commercial air curtains in hospitals and healthcare centers. There have good quality and anti-hygiene air curtains for hospitals.

 

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Energy Saving Air Curtains- A Hygienic Processing Facility Designed by Mitzvah

energy savings air curtains

Air Curtain is a hygienic processing facility that is designed by mitzvah. The air curtains are suitable for every type of field like- warehouses, restaurants, shopping complexes, malls, salons, offices, etc. to keep the dust, flies, insects, bad odor away while maintaining the inside temperature. If you are looking for energy saving air curtains then, go through the Mitzvah air curtain website www.mitzvah.in.

In this blog, you will get to know how air curtain makes your environment clean and dirt free-

No matter what building you have, whether it’s an office, school, restaurant, or retail store, it can be difficult to prevent heat loss when there is a lot of traffic. For any building with more doors open than closed, energy-efficient air curtains have the potential to significantly reduce energy costs, but how do they work?

Opening or closing doors allow heat (and energy) to escape from the building. Warm air rises and flows out of the open door, followed by cooler air, replacing it at the lower level. Of course, this happens in any room or building, but doors that open and close frequently or stay open all the time can speed up the process. As more  cooler/warmer air escapes, your cooling/heating system has to work harder to replace it, increasing your energy bills.

Energy-saving air curtains create airflow through the door, creating a “barrier” between the air inside the building and the air outside. These air curtains often have heating elements that increase the temperature of the air to reduce uncomfortable cold drafts as people pass through an open door.

Using air curtains as a barrier ensures that the energy used to heat the building space is not wasted. This results in an overall reduction in the building’s energy consumption, carbon footprint, and operating costs. In fact, recent research in Finland shows that air curtains can reduce door air leakage by up to 86%.

Do you know air curtains can help us save millions of hard-earned money?

A simple mathematical calculation can prove this. Let’s see how:

Energy Calculation

E = m C ∆T

m: Mass of Air

C: Specific heat of Air at a given Temperature

∆T: Temperature Difference

m = Density X Volume

The density of Air at 40˚C = 1.127 Kg/cu. Meter

C = Specific Heat = 1.005 KJ / (Kg ˚C)

∆T = Temperature Difference = 15˚C

(assuming the outside temperature is 40˚C and the inside is 25˚C)

Volume = Area X Velocity of Air from Door X Time of Opening

(Say : Door Size = 8ft X 4 ft

Velocity = 1 m/s = 200 fpm

Time of Opening = 1 min

Volume = 32 X 200 X 1 = 6400 cu. ft. = 181.22 cu. meter)

m = Density X Volume

(from Above = 1.127 Kg/cu. meter X 181.22 cu. meter

= 204 Kgs)

E = m C ∆T

= 204 kgs X 1.005 KJ / (Kg ˚C) X 15˚C

= 3075.3 KJ = 0.85425 KWh

Thus –

India if Per KWH cost of Power is Rs 8.10

The cost of Opening the Door of Size 8ft X 4ft for 1 min is = Rs 6.92

Cost of Running an Air Curtain of 4 ft = 400W (Input Power) for 1 minute = 6paise

Rate per kWh X Time X Power Input

8.10 X 1/60 X 0.4 = 5.4 paisa

Net Saving = Rs 6.92 – 0.06 = Rs 6.86

Saving per Hour= Rs.7*60min=Rs.420 per Hour

Thus, you can see how Air Curtains help us save Rs. 420/hour. Also, they create a comfortable and amiable environment by keeping mosquitoes, flies, and other pollutants away.

However, air curtains can only deliver on their energy-saving promises if they are properly designed, manufactured, and installed by experts in the field. As with most technologies aimed at reducing waste and increasing efficiency, air curtains must be sized and selected for the application or they will not achieve the desired thermal and energy savings. Therefore, to ensure that your investment is worthwhile, you should definitely use the services of a trusted provider.

Mitzvah is leading air curtain manufacturer dealing with latest technology and ventilation solution. We design, build and install our technology in India. For more information on Mitzvah and our range of energy savings air curtains solutions, contact us today for a free no-obligation quote.

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Specification facts to know about Air curtain manufacturers!

 

What makes good air curtain?

An Air curtain technically, is a fan-powered air device that automatically creates an invisible air barrier wherever it is being installed. It is mostly used over the doorway to separate efficiently two different environments and it makes this separation without limiting or interrupting the access of the people or vehicles on the premises. Air curtain manufacturers make sure that they are highly operational and progressive.

There are many Air curtain manufacturing units and their worldwide users but not all are fully aware and familiar with its usage and specifications. Thus, we have listed some characteristics and tips that all users should keep in mind to choose the right product.

  • The first and foremost important thing is the height of the door
  • Choose an air curtain according to the width of the door
  • The location of the building should be the determinant factor for the level of protection needed against weather conditions
  • Use air curtains if the focused building has several doors in the same area,
  • If the building has several stories connected by escalators/stairs
  • Air curtains are best to measure pressure differences between the inside and outside of the building
  • Door characteristics also matter to choose an air curtain, if frequently closing and opening, then go for sensor based device, or else manual.
  • Characteristics of the ventilation and air conditioning installation
  • Voltage and electrical power availability also affect the performance of air curtain
  • What type of business, location, and office equipment are there is also vital to get the appropriate product.
  • The fitting style of an air curtain is also responsible for its performance such as free hanging or recessed, horizontal or vertical installation, heated or unheated, etc.

Air curtains and their manufacturing specifications

However, there are different sorts of air curtains available as per the industry usage. So, herein we have mentioned some of them for your information and knowledge.

Types of Air Curtains:

There are majorly four broad categories of air curtain to cater to the different usages and requirements of the customers. They are as follows:

  • The very first type of Air Curtain with a velocity of 15-17 meters/sec, the basic usage is to create only a thermal barrier.
  • Another one is Air Curtains with a velocity of 17-19 meters/sec. Their primary purpose is to control dust, pollution, and insects in varying degrees.
  • The next type of Air curtain with a velocity of 20-22 meters/sec and they act as a device that controls dust, pollution, and insects in varying degrees
  • Special Purpose Velocity Air Curtain has 26 meters/sec & above and it is specifically required where a high degree of pollution and insect control is needed. They are perfect for industries such as canning, bakeries, dairies, pharmaceuticals, distilleries, and cold storage.

Some Air curtain manufacturers in India are:

  • Mitzvah

Mitzvah Air Curtains are duly designed in the most professional ways to provide uniform air with minimum noise and no wobbling. Our products are thoroughly tested at labs and meet the highest quality standards to provide customers a trouble-free service& experience. The Air Curtains mostly do not require any post services if the usage is clear and adequate. In order to meet the low noise requirements for conference rooms, operation theatres, and computer rooms among others, Air Curtains also come in acoustically treated models to meet such requirements. The Air Curtains are especially suited to meet the requirements of hotels, restaurants, fast food centers, distilleries, and pharmaceutical industries where the entry of mosquitoes and flies needs to be curbed.

2)    Mitsubishi

Mitsubishi Electric India Pvt. Ltd. was effectively incorporated in 2010, and since then they strive for manufacturing the best products among other competitors. They focus on realizing the potential and needs of customers to fulfill the requirement of Indian households. Mitsubishi Electric is one of the top Air Curtains Manufacturers that are perfect to maintain a comfortable, clean and hygienic environment while also saving energy with a quiet, efficient, and powerful operation.

3)    Euronics

Euronics is a major Exporter, Supplier, and Air Curtains Manufacturer in New Delhi. Air Curtains have now become a necessary part of air-conditioned areas as they act as the premier thermal barriers. They are primarily to prevent dust and pollution, but they are capable of giving additional services as well. Air Curtain is custom-made units given as per different requirements. The cabinets of these products are made of cold rolled mild steel sheets which are duly powder coated or are made with Stainless Steel as per the usage &requirement. Whereas the blowers are made of high-quality aluminum/plastic fiber both statically as well as dynamically on computerized digital balancing machines.

4)    SudhaiAirTech

Sudhai Air Tech has been one of the best air curtain manufacturers and projector companies that provide the most efficient, cost-effective, reliable technical products in the market.

They have headquarters in Mumbai, Maharashtra. The company not only manufactures products but also offers expert advice on air curtain projects, system design, supply, service, after-sales support, etc.

Their wide-ranging products cover everything from economical air curtains used in medium size shops, complexes &doorways to large industrial units for warehouses and workplaces. The products are sold in various color options beautifully designed &crafted products for prestigious buildings and stores. Sudhai Air Curtains stand out from other products as they have slim, simple mounting, high power & durable airflow.

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Air Curtains Supplier in India- Things to Consider Before Selecting a Vendor

 

Air Curtains Supplier in India

With air curtains supplier in India, Selecting a vendor is one of the most crucial tasks before selecting an air curtain. A reliable vendor will understand your needs and help you choose the air curtain that is best suited to your requirements. There are various important factors listed below that you must consider before selecting your vendor:

  1. Manufacturer: You should know the original source i.e. from where your vendor procures the machines. The manufacturer must be a reputed one in the field and enjoy great goodwill in the market.
  2. Experience: To a great extent, the experience of the vendor decides his reliability. Better experience implies a better understanding and knowledge of market conditions and customer requirements. Therefore, it becomes imperative to analyze the experience of the vendor.
  3. A number of installations: Choose the vendor who has already served for a number of years. Get to know the number of installations done by them within the country and around the world (if any). A large number of installations would imply better knowledge and a better understanding of the field.
  4. Technically Equipped: Their production unit should be technically advanced in terms of working and delivery. It will provide a better breakthrough in the competitive market. The vendor should be able to guide you on various kinds of flow patterns and workability and should be able to customize a solution whenever required.
  5. Warranty and part Availability: Many vendors commit to a warranty that is beyond their scope. As an international standard, a manufacturer should be able to provide support for all the parts and make them available for a minimum tenure of 10 years. Generally, traders overcommit and shed their responsibility when parts are needed.

What should be the Right Velocity AsPer AMCA/NSF Guidelines

Everyone in the industry struggles with the above question and many times, engineers out of their experience or some thought specify velocities at different points, either on top of the door or on the floor, etc.

The Air curtain Manual by AMCA Specifies the right velocity parameters. The same is mentioned in NSF Guidelines also.

The velocity specifications as mentioned in AMCA Publication, 222-08 Application manual for Air Curtains, are as follows:

Application Manual for Air Curtains; Section 8.6.1.2

8.6.1.2 ANSI/NSF37- Air Curtains for Entranceways in food and food service establishments. The NSF standard establishes criteria for ACU air performance, construction, design, and material type. An ACU construction that complies with this standard is considered by the food service industry to provide effective flying insect protection to an entryway by deterring flying insects from entering through the opening or nesting in the ACU. These criteria can be summarized into basic principles that are intended to create a clean and healthy environment.

  1. Laboratory Methods of Testing Air Curtain Units for Aerodynamic Performance Rating: This AMCA standard defines the test methods that can be used to generate data for the typical types of air curtains performance. This data can then be used to compare different models for aerodynamic performance. Note that the data generated from the tests described in the standard does not define an ACU’s relative effectiveness.

If the data is measured and generated from an AMCA accredited laboratory, the product can be licensed to bear the AMCA seal (if applied for) under AMCA 211, Certified Rating Program- Product Rating Manual for Fan Air Performance. The AMCA Seal represents the fact that the ACU has been independently tested by a third party, adding credibility to manufacturer ratings.

The performance data generated, as defined by ANSI/AMCA 220 and simplified here, are:

  • Average Outlet Velocity- The mathematical derivation of a velocity flow rate by dividing the air volume flow rate by the air curtain discharge area. This value should be used with outlet velocity uniformity to compare different ACUs.
  • Velocity Projection- The average of the peak velocities measured along the ACU discharge nozzle at predetermined widths at specified distances away from the ACU. These values can also be used to determine velocity uniformity at said specified distance.
  • Outlet Velocity Uniformity- This is a measure of the consistency of the discharge velocities across the ACU width expressed in a percentage determined by a standard deviation method.
  • Airflow Rate- Physically measured by a recognized air volume test chamber using ANSI/AMCA 210, Laboratory Methods of Testing Fans for Certified Aerodynamic Performance Rating.
  • Power Rating– This is the electrical power actually consumed by the entire unit(in KW) during the Air Volume Flow Rate; not to be confused with the mechanical energy equivalent to the unit horsepower.
  1. Air Curtains Entranceways in Food and Food Service Establishments: The NSF standard establishes criteria for ACU air performance, construction, design, and material type. An ACU construction that complies with this standard is considered by the food service industry to provide effective flying insect protection to an entryway by deterring flying insects from entering through the opening or nesting in the ACU.

These criteria can be summarized into basic principles that are intended to create a clean and healthy environment. The air performance defined in this standard is geared toward protection from flying insects.

The opening types are defined by three categories:

  • Customer Entryway
  • Service Entryway
  • Drive through Window

Each type has its own minimum performance requirement.

  1. Customer Entryway: The Customer Entryway test requires a maximum mounting height declaration and a minimum air velocity of 3.05 m/s (600fpm). Velocities are measured within 200mm (8 in.) deep by ACU nozzle width wide area broken into 50mm*150 mm (2in.*6in.) grids, 0.9m (3ft) from the floor.
  2. Service Entryway: The service entryway test requires a maximum mounting height declaration and a minimum air velocity of 8.15m/s (1600 fpm). Velocities are measured within a 75mm (3in.) deep by ACU nozzle width wide area broken into 75mm*150mm(3in.* 6in.) grids, 0.9m(3ft) from the floor.
  3. Drive-through Window: The drive-through Window test requires only a minimum air velocity of 3.05 m/s (600 fpm), 1/3 the distance of the vertical opening above the service window countertop. Velocities are measured within a 200mm (8 in.) deep by ACU nozzle width wide area broken into 50mm * 150 mm (2 in.*6 in.) grids.

The design and construction requirements are intended to prevent the nesting of vermin, the accumulation of dirt, debris, and moisture; and to provide accessibility for servicing, cleaning, and inspection.

The material requirements are intended to ensure that the equipment is resistant to penetration from vermin and wear with the respect to food safety (i.e., the effect of food, heat, refrigerants, cleaning, and sanitizing compounds).

Lastly, ACU units can be tested, certified, and listed to standard ANSI/NSF 37 by nationally recognized testing laboratories and certifying bodies that have a food service program. Some of these agencies include NSF and the corresponding NSF Mark, UL.

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How to Take Sizes of an Air Curtains?

 

Air Curtain Sizes

For Air Curtains Supplier, there is a Contrary to the common belief, that taking the measurement is actually a child’s play. With only a single piece of equipment, i.e. a measuring tape, this job can be done easily.

It is important to know just 3 basic pointers:

  • 1. Width of the door
  • 2. Height of the door
  • 3. Space available above the door Checklist/selection guide

You can even go to the link to watch the video https://www.youtube.com/watch?v=JcrGHe_NE04

Factors that will drastically hamper the Air Curtain’s performance

Factors that hamper the Effectiveness of Air Curtains Supplier

Typically air curtains work well in many facilities such as production and industrial buildings, stores, transport terminals, car services, garages, markets, shopping complexes, drying houses, etc. But the proper installation of air curtains is necessary to ensure their proper working.

There are a few other factors that can affect the efficient working of air curtains such as

    • Negative Pressure:If the facility has exhaust fans or gravitational ventilators and no supply air or there is a difference between the exhaust and supply air (i.e. the latter is less than the former) the negative pressure is created.
    • In these kinds of conditions the volume of air moving out from air curtains is also sucked in the facility along with the outside air and hence air curtains become ineffective.
    • High Wind Velocity:When the outside Wind Velocity is too high as in the case of storms, it will disrupt the flow pattern created by the air curtain on the doorway. So, whenever the outside wind velocity of the curtain, it will get disrupted.
    • Horizontal Gap between Wall and Machine:If the horizontal gap between the wall and the machine is too wide, the performance of air curtains will be drastically reduced. An air curtain should be installed close enough to the door so that there is no leakage from the sides of the door. The gap should be less than 50mm, for maximum effectiveness.
    • Vertical Gap between the Nozzle and the top of the Door:If the vertical gap between the nozzle and the top of the opening will be wide, the effectiveness of the air curtains supplier will be affected. Ideally, the gap should be less than 100mm machine.
    • Sizing the Air Curtain:The Air Curtain should always be equal to the Width of the Door, for it to perform optimally. If the air curtain is oversized, it will require more energy than usual and if the air curtain is undersized, it will prove insufficient to fully protect the opening it has been installed above. This will lead to an unnecessary increase in costs because of energy wastage.
    • Placement of Air Curtain:When our primary objective is to discourage the entry of mosquitoes and flies, the air curtain should be installed outside. When installed outside, it becomes 4 times more effective to stop flies, than the one which is installed inside.

How to Save Rs. 420 Every Hour and Enhance Productivity?

Air is nature’s greatest gift to mankind and the quality of the air we breathe in affects not only our productivity but the quality of our life as well. Air curtains are one of the best and most cost-effective ways to maintain the quality of air within the premises and retain a hygienic environment.

Do you know air curtains can help us save millions of hard-earned money?

A simple mathematical calculation can prove this. Let’s see how:

Energy Calculation

E = m C ∆T
m : Mass of Air
C : Specific heat of Air at given Temperature
∆T : Temperature Difference

m = Density X Volume
Density of Air at 40˚C = 1.127 Kg/cu. Meter
C = Specific Heat = 1.005 KJ / (Kg ˚C)
∆T = Temperature Difference = 15˚C
(assuming the outside temperature is 40˚C and the inside is 25˚C)

Volume = Area X Velocity of Air from Door X Time of Opening
(Say : Door Size = 8ft X 4 ft
Velocity = 1 m/s = 200 fpm
Time of Opening = 1 min
Volume = 32 X 200 X 1 = 6400 cu. ft. = 181.22 cu. meter)

m = Density X Volume
(from Above = 1.127 Kg/cu. meter X 181.22 cu. meter
= 204 Kgs)

E = m C ∆T
= 204 kgs X 1.005 KJ / (Kg ˚C) X 15˚C
= 3075.3 KJ = 0.85425 KWh
Thus –
India if Per KWH cost of Power is Rs 8.10
The cost of Opening the Door of Size 8ft X 4ft for 1 min is = Rs 6.92

Cost of Running an Air Curtain of 4 ft = 400W (Input Power) for 1 minute = 6paise
Rate per Kwh X Time X Power Input
8.10 X 1/60 X 0.4 = 5.4 paisa

Net Saving = Rs 6.92 – 0.06 = Rs 6.86

Saving per Hour= Rs.7*60min=Rs.420 per Hour

Thus, you can see how Air Curtains help us save Rs. 420/hour. Also, they create a comfortable and amiable environment by keeping mosquitoes, flies, and other pollutants away.

An air curtain helps maximize savings by reducing energy loss and improving the effectiveness of our cooling/heating systems. They provide a risk-free alternative by shielding the premises without an actual physical door and are one of the best investments for a business.

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Parameters to Consider Before Buy Air Curtains

Buy Air Curtains

When buy air curtains system, consider not only the main variables such as door height and door width but also other factors such as the building and climatic conditions.

Other influencing factors are :

  • The positions of the different doors on the floor, and if there are more than one, the positions between them: aligned, facing each other.
  • The different floors are connected by stairs, escalators, or ramps.
  • The pressure difference between the exterior and interior of a building.

According to climatic conditions, air curtains with a stronger, stronger jet and stronger heating capacity should be selected to prevent cold, heatstroke, and wind.

When choosing the type of heating, it is important to consider whether there is hot water or electricity available in the building. You can buy air curtains with electric heaters or heat pumps, which are more sustainable due to their energy efficiency.

There are two primary questions that need to be answered and understood:

  • 1. Will Air Curtain works for me?
  • 2. What are the parameters required to choose the Right Model?

Basically, there is very limited information you require to decide on the requirement of the air curtain:

The Basic information required to know, whether an air curtain will be suitable for your facility or not, is as follows:

  • Width and Height of the Opening
  • Negative Pressure in the facility
  • Outside Wind Draft
  • Purpose of Installation
  • Insect Control
  • Dust Control
  • Save Conditioned Air
  • Odour Control

With this basic information, we can judge whether the air curtains will work for us or not.

Factors affecting the selection of air curtains can be classified into 2 categories:

  • Primary Parameters
  • Secondary Parameters

 

Primary Parameters Secondary Parameters

 

Type Voltage
Flow MOC Blower
Mounting MOC Chassis
Fan Operation
Placement

The Primary Parameters include a variety of options that affect the performance of an Air curtain like

Types of Air Curtains:

  • Recirculating:The recirculating air curtain collects the exhaust air and directs it back to the air curtain inlet. This process is repeated continuously with a plenum built into the door, which is reconnected to the air curtain inlet via a duct.
  • Non-recirculating:Non-recirculating air curtains capture fresh air from the environment and exhaust it out of the unit. Since the same air is not recirculated, these air curtains may be referred to as non-recirculating air curtains.

Recirculating air curtains are more efficient than similar products, but non-recirculating air curtains are still more popular. Most of today’s units are non-recirculating units due to their cost-effectiveness and ease of installation.

 

Types of Air Flow in Air Curtains:

 

  • Top to Bottom:Top-to-bottom installation is the most common and economical way to install air curtains. Here the air curtain is mounted horizontally above the opening and air is blown out the door from top to bottom.
  • Sideways (L to R, R to L):Here the curtains are installed perpendicular to the floor and the air is blown left to right and right to left. Vertical drainage often requires curtains to be installed on both sides of the door, adding to the overall cost of installation. This type of installation is usually required where doorways are very wide or high.
  • Bottom to top:This type of installation is uncommon and is dedicated to hot furnace applications. Curtain panels require a special frame and are assembled at the door level, the installation is done under expert guidance.

Mounting

  • Surface Mounted
  • Recessed

Fan

There are three types of fans to choose from:

  • Centrifugal
  • Crossflow
  • Axial

Placement Air Curtain Inside/Outside

The air curtains can be easily mounted on either side; whether inside or outside the conditioned area. Usually, it is recommended that the equipment should be installed on the warmer side for optimum results. It implies, that when installing a heated air curtain under cold conditions, it should be installed Inside. In places where the temperatures are too high and the major problem are dust, flies, and saving the cold air, it should be installed outside to get the best results.

Even secondary factors play an equally important role in the selection of an air curtain. They include:

Voltage

The voltage output plays a major role in the selection of air curtains as these machines are specially designed to operate with the mentioned amount of electric outputs. For Indian markets, air curtains are designed with respect to these three outputs:

  • 220V/1 phase/50Hz
  • 220V/1 phase/60Hz
  • 440V/3 phase/50Hz

Otherwise, for the Saudi Market, curtains that work with 220V 1P 60Hz output are demanded. Air Curtains can also be installed in buses and are specially built for 24V/DC. Thus, information on voltage is important for picking out the right buy air curtain for you.

MOC for blower

MOC or the “Material of Cover” for the blower is another specification on the basis of which air curtains are selected. The covers are made of different materials to suit different requirements, such as:

  • Galvanized Iron
  • Plastic
  • Stainless Steel
  • Aluminium

MOC for Chassis

Chassis basically refers to the main mounting and the fixing plate of an air curtain. For the chassis, the customer usually has two options of either picking one of the two materials;

  • Stainless Steel 304 or
  • CRC Powder Coated

An air curtain consultant can help you in picking between various options.

Operation

    • Switch Operated
    • Remote

To know more visit:- Mitzvah Shop 

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Technological Edge of Air Curtains Manufacturers in India

Air Curtains Manufacturers in India

Classification of Air Curtains manufacturers in India Based on Flow and Fans Type

Air Curtains can be mainly classified into two types:

  • Recirculating and
  • Non-recirculating Air Curtains

Recirculating Air Curtain gathers and returns the discharged air in the air curtains inlet. The process is continuously repeated with a plenum built into the door that connects back to the inlet of the air curtain via the duct.

Non- recirculating Air Curtain captures fresh air from the environment and discharges it from the unit. Since the same air is not recirculated back, these air curtains can be termed non-recirculating air curtains.

Recirculating air curtains are more efficient than their counterparts but still, non -recirculating air curtains are more popular. The majority of installations today are non-recirculating due to their cost efficiency and ease of installation.

Directions of Flow:

There are 3 possible directions of blow-out air streams, both for recirculating and non-circulating curtains:

  • Horizontal Mounting from top to bottom: Horizontal mounting is the most common Installation and most economical way to mount an air curtain. Here, the air curtain is installed horizontally across the top of the opening and the air is discharged from top to bottom of the door.
  • Vertical Mounting from left to right or right to left: Here, the curtain is mounted perpendicular to the ground and the air is expelled from left to right and right to left. Vertical discharge mostly requires mounting curtains on both sides of the door which adds up the total cost of installation. Normally, this kind of installation is required in places with very wide or high door openings.
  • Horizontal discharge from bottom to top: This installation is not very common and is specially used in the case of hot oven applications. The curtain units require special frames and are mounted at the door level and the installation is carried out under specialized guidance.

Type of Fans

Air Curtains can be designed and manufactured with various types of Fans. The three most commonly used fan types are:

Centrifugal

Most air curtain units employ centrifugal fans that use a forward or backward-curved impeller. Centrifugal fans make use of blades to drag air into a circular motion. The pressure of an incoming air stream is increased by blades mounted on a circular hub and alters the direction of the outward flowing air, usually by 90 degrees. Centrifugal fans move air radically and outwards through the vortex housing. Centrifugal fans provide a stronger and more stable air flow than axial fans and therefore, need a higher power input.

Axial

As the name suggests, an axial fan causes air to flow through it in an axial direction. The fan blades rotate around an axis and draw air in parallel to that axis. In other words, the air flows axially in and axially out which forces the air out in the same direction. The fan creates a pressure difference that forces flow through the fan.

Axial fans create a large volume of airflow, but the air flows they create are of low pressure. Therefore, these fans need a low-power input for operation. There is a wide range of axial flow fans. It may vary from low or medium-pressure fans to high-pressure fans. Because of the3 cool and low-pressure high-volume air flows they create, axial fans are best suited for many general-purpose applications.

Cross Flow

Cross-flow fans are derivative fans and comprise a housing with a rear wall and a vortex wall. Within that housing, there is an impeller surrounded by forwarding curved blades. When the air moves through a cross-flow fan, it flows transversely and passes through its blades twice.

In cross-flow fans, the air enters in a perpendicular direction to the motor shaft and is detected by the fan blades and expelled. These fans have a long, rectangular shape and use either an alternating current (AC) or direct current (DC) motor. These fans are also referred to as tubular fans or tangential fans because of their long and narrow shape and airflow pattern. Unlike centrifugal fans, in cross-flow fans, the air flows through the fan itself rather than through an inlet. They provide a high-pressure coefficient and are preferred for their low noise. The most common application for them is a split air conditioner.

All the above types of fans have their own advantages and disadvantages and can be used for different kinds of applications.

Mitzvah manufacturers and suppliers of air curtains keep in mind the technological edge of air curtains. The manufacturer of best quality Air curtains that will help you to save money and clean your environment. If you are looking to buy air curtains manufacturers in India, then go through with Mitzvah.

Here you can find affordable air curtains price!!

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Air Curtain Benefits- Save Money & Protect Your Environment

Air Curtains Benefits

Mitzvah Air curtains manufacturers help you save money and protect your environment. The air curtain is a multifunctional product that can be used in different areas. It is a versatile machine capable of solving all kinds of problems we face every day.

Air curtains have many advantages, which is why they are widely used in many industries and different fields. Air curtains come in different sizes and can be installed in different ways to achieve the desired effect. Installing an air curtain system in your business is the best step to solve many of your problems.

There are many benefits of installing commercial air curtains in your work area.

5 Major Benefits of Air Curtains Include:

  1. Environmental separation: The air curtain forms an invisible barrier, preventing the flow of air to the other side. Outdoor environments often have a variety of unpleasant odors and pollutants. Unpleasant odors and exhaust gases are especially difficult to avoid in areas close to industrial sites, waste disposal sites, or sewage treatment plants. Air curtains help maintain a comfortable environment within a facility by preventing the entry of unwanted dust, outside odors, and pollutants.
  2. Temperature control: The temperature difference between the two areas will naturally generate air exchange between these two areas. Warm air exits the top of the doorway and is replaced by cooler, denser air entering from the bottom. Greater temperature differences just result in higher air leaks and energy losses. Air curtains prevent this exchange by protecting the conditioned environment in different areas and helping to control the temperature.
  3. Save money: We all know that changing the temperature costs a lot of money. For example, if we were to introduce hot air into a furnace, we would need burners and fuel. Likewise, to cool the air, we need an AHU (Air Handling Unit), a cooler, or a freezer. Whenever this conditioned air is wasted or lost, it results in an increase in our overall cost. By providing an effective barrier to conditioned air, air curtains provide an ideal solution that can save you money.
  4. Insect and Pest Control: Flying insects and pests can be a nuisance to anyone. The presence of these insects in an area can lead to food contamination, unhealthy conditions, and other related problems. The powerful airflow created by the air curtain prevents these harmful pests and other flying insects from entering the premises, thus maintaining hygienic conditions for everyone.
  5. Work in extreme conditions: The air curtain creates an invisible barrier that isolates different temperature zones without hindering the movement of people and products. Many industries use heaters or furnaces, while others use cold rooms and other cooling systems. Air curtains work in both cases, effectively sealing the area and preventing air exchange and energy loss.
  • Freezers / Chillers / Cold Storage: Air curtains are great for cold storage because they can significantly reduce energy loss by keeping cold air in and hot air out when doors are open and in use. Air curtains are known to reduce losses by up to 90%.
  • Hot furnaces: Air curtains manufacturers have proven beneficial for industries that use hot furnaces and industrial conveyors. They can be used to contain extreme heat and contain hot air inside industrial conveyors or furnaces. This results in savings of up to 40% of the total kiln fuel consumption.
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Air Curtains Suitable for Various Types of Air Losses in a Building

air curtains

Air curtains or air doors are devices that help create an invisible blockage between the air outside your premises and the air inside your workplace without the need for bulky doors.

There are three prime mechanisms through which conditioned air contained inside is lost via an opening in a building;

  1. Natural Convection
  2. Natural Ventilation
  3. Mechanical Ventilation

Let’s discuss what they are and how to combat the issues with the help of air curtains.

Natural Convection

Cold air is denser than warm air, which allows cold air to settle down. Across an unimpeded boundary, a heated and cool area conditioned cool air will escape from the bottom of the opening. This process will naturally allow Hot Air to enter the conditioned space, from the top of the opening, which is known as natural convection.

This process happens due to the thermal properties present i.e. the tendency of hotter and hence, less dense air to rise and colder air to sink under the influence of gravity resulting in the transfer of heat into the surroundings.

Under these conditions, an air curtain can limit the exchange of air between the two zones by creating a barrier to impede airflow.

The turbulent flow of air curtain creates a secondary layer that makes Air Curtains work effectively and also affect the natural airflow pattern in thermal convection.

Natural Ventilation

An airtight building is never possible. There is invariably some openings and service, such as doors, windows, and cracks that prove to be the facilitator of cold air passing as well as hot air entering the building in order to replace it through the mechanism as very well explained in the previous process.

The prevailing wind conditions and directions can exacerbate this natural ventilation mechanism, relative to the openings.

In this type of situation, the use of an air curtain can reduce the ill effects of air loss as a natural consequence of wind-driven natural ventilation, through the doorways. Air Curtains have got the ability to work wonderfully well on Doorways and can reduce the losses sign can on conditioned Air and prevent the entrance of mosquitoes, flies, and dust.

Mechanical Ventilation

Mechanical ventilation, also referred to as artificial ventilation, uses artificial fans, such as Ventilation systems, Exhaust Fans, Gravity Ventilators, and several more.

A region within a building, or the interior of a building, can be very well pressurized under three separate conditions:

  1. Pressurized positively, where the Air is moving out of the area in consideration
  2. Pressurized negatively, where the Air is moving in the area in consideration.
  3. Non- pressurized (with no pressure differential between zones).

All these variations in pressure difference across an opening between zones can be the natural consequence of a poorly balanced ventilation system, ineffective controls, or in a few cases a well- thought design decision.

Air curtain solutions have the ability to work in almost all of these scenarios (controlled conditions). The Flow of Air Curtains is hugely affected if there is a properly ventilated building. Nonetheless, they are most effective if the pressure differential across the air stream is minimum.

Are Air Curtains Effective?

No doubt they are!

Various studies and research conducted show that Air Curtains are effective in creating a barrier to keep the inside air well conditioned.

WHO Needs Air Curtains?

Look at the checklist below and see if you face similar problems:

Checklist:

  1. Does Dust affect you/your business?
  2. Do you have Air Conditioned premises?
  3. Do mosquitoes/Flies affect your comfort/product quality?
  4. Does closing the door affect your inflow of customers?
  5. Do you have a conveyorized hot oven?
  6. Do you want to reduce energy bills?
  7. Do you have a Cold Room/Freezer/Chiller?

If the answer to any of the above is YES, then it is a must for you to have Air Curtains.

Air curtains are effective in isolating weather conditions and are now a necessity in a variety of commercial and residential sectors.

It protects the air inside, and wards off insects and dust, eliminating the need to buy products solely for the aforementioned purposes. In addition, as an easy-care product, it is cost-effective in the long term, while also meeting certain hygiene standards.

So in simple language, if you are a Business owner, Managing Director, Project manager, or Consultant of a Hotel, Restaurant, Pharma unit, Cold Room, food factory, warehousing unit, or anywhere else, when comfort and hygiene are critical to you and your business, you need an air curtain.

You can increase your business profitability and enhance your customer experience, by getting rid of mosquitoes, flies, and dust and can save conditioned air from losing.

In general, people put a lot of effort and energy into the planning and execution of the design and construction of the project and forget about the last spring in the cap, which becomes the leak of the building.

So if you are amongst them, don’t make the same mistake. Become wiser and consider Air curtains now!!

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Air Curtains Manufacturers- What is the Mechanism behind Air Curtain?

air curtains manufacturers

Mitzvah air curtains manufacturers in those ways where air enters the Air Curtain (Air Door) through the fan housing before being accelerated by the fan. This fast-moving air gets into the plenum which ensures that the air is evenly distributed along the entire length of the discharge nozzle.

The airfoil design of the blower with vortex-shaped housing in combination with the nozzle ensures the uniformity of the air stream and minimum turbulence. The air which is discharged via the nozzle goes to the door as a jet stream and about 80% of the air volume gets to the side where the air curtain is installed or the suction side while 20% flows towards the opposite direction.

Or, in simpler words, we can say that the air curtains divide the internal and external environment.

It follows a complicated mechanism where the air enters the machine through an inlet grille attached inside the air curtain and is then compressed by a few internal centrifugal fans and forced out through an air outlet, which is directed towards the open doorway.

Heated air curtains have a coil electric, hot/chilled water, steam, indirect or direct gas, direct expansion, etc. to heat or cool the jet. Heating is used to save people from feeling a cold jet of air while crossing the doorway and also, to heat the volume of air coming in at the entrance.

These types of air curtains are generally used in cold climates and are placed inside.

Most Common Problems Experienced by People who are not Using Air Curtains

In cold rooms, warehouses, industrial, commercial buildings, and other such places, continuous movement is inevitable which means repeatedly opening and closing doors and sending an open invitation to a variety of issues and problems.

People who do not invest in air curtains face common problems that might affect their daily operations;

  1. Ingress of flies and mosquitoes
  2. Heavy Electricity Bills
  3. Air Conditioners not performing as desired
  4. High Dust in the showroom
  5. Smell or smoke problem
  6. Continuous breakdown of Machines due to Dust & heating
  7. Heavy loss of fuel in case of conveyor hot ovens
  8. Worried about the opening and closing of Door
  9. Concerned about product Quality and hygiene
  10. Irritated customers because of flies and mosquitoes.

Mitzvah provides world-class air curtains manufacturers & suppliers in India. Mitzvah is the leading name in air curtains manufacturer and Supplier Company.  An air curtain controls the flood of air by keeping cold air out in winter and adapting air in during summer. With its strong engine or blower, it assists with halting the penetration of poisons and flying bugs. This is particularly significant in stores that have food or other consumables. It is appropriate for huge display areas, grocery stores; gem specialist display areas, shopping centers, and so on. It isolates various conditions while permitting a smooth, continuous progression of individuals, vehicles, and unhindered vision through the opening.

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