What are the specification of AHU?
AHU design will be robust; air inlet for both AHU is from side with facility for easy maintainability. All controls and instrumentation of the AHUs shall be in assembled condition with min. pipe length of 1 mts (both supply and return) length. The chilled water pipe shall be of heavy class (class-C)) as per IS 1239.
How do you install AHU system?
Shift the Air Handling Units to the place of installation in safe manner using fork lift/crane as applicable. Ensure that the correct AHU is shifted to the place of installation. Air inlet, outlet, fresh air connection and chilled water connection orientation are as per approved drawings.
How do I calculate my AHU room size?
6 Steps to Properly Size Your HVAC Unit
- Step 1: Calculate the square footage of the area to be cooled.
- Step 2: Next, multiply the square footage obtained for each area by 25.
- Step 3: Then, add 400 for each person who works in that particular area.
- Step 4: Finally, for each window, add 1,000.
Where are AHU placed?
They are usually located in the basement, on the roof or on the floors of a building. AHU’s will serve a specified area or zone within a building such as the east side, or floors 1 – 10 or perhaps a single purpose such as just the buildings toilets. Therefore, it’s very common to find multiple AHU’s around a building.
How do you calculate AHU cfm?
Start with the total volume of air (in cubic feet), divide by the exchange rate (how quickly you want to replace the air), and the result is the total CFM you need for your system.
How do you design duct size?
To calculate the required equipment size, divide the HVAC load for the entire building by 12,000. One ton equals 12,000 BTUs, so if a house or office needs 24,000 BTUs, it will take a 2-ton HVAC unit. If you get an uneven number, such as 2.33 for a 28,000 BTU load capacity, round up to a 2.5-ton unit.
What is fresh air handling unit?
Fresh Air Handling Unit (FAHU) is an excellent solution for regulating and circulating fresh air as part of an HVAC system and it ensures a constant flow of fresh clean air and a very well-conditioned environment.
How many CFM are in a ton?
While packaged equipment is designed at the 400 CFM per ton norm, most units are capable of operating at air volumes between 325 CFM per ton and 500 CFM per ton.
How many CFM is a kW?
The atmosphere cubic feet / minute unit number 20.91 atm cfm converts to 1 kW, one kilowatt.