Air Coil Roof
 COIL ROOFING NAILER SIDING AIR NAIL GUN-FREE SHIPPING US $99.99 
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Mechanical Engineering - Can anyone tell me what's needed to work out flow rates etc for Air Conditioning?
Ok, so I have a roof top plant room where my air handling unit is to be located. I have open plan offices on ground floor which need conditioning via ceiling mounted fan coil units and supply grilles......
Can anyone explain this to me in relative detail - how the required air is calculated? Etc
You calculate the heat load from the walls, windows and ceiling and also from people and equipment. Use an outside temperature that is near the max that you get in your area. Size the A/C unit accordingly.
Figure on 5-10 air changes per hour to get the flow rate you need though all fan coils.
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