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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

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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