Snow --> AHU intake
Snow --> AHU intake
(OP)
I have the following system:
The price estimate came in a > $100,000. Questions:
- BL-1, BioPharm, cell culture production.
- 50,000 S.F. suite of clean rooms
- Two ~ 40,000 CFM AHUs; 100% outside air
[li]100% exhaust with no heat/cooling recovery
The price estimate came in a > $100,000. Questions:
- Does a BL-1 facility REQUIRE 100% outside air design?
- Is a desiccant wheel usable with a BL-1 AHU
- If a desiccant wheel can't be used, wouldn't an air-to-air heat exchanger provide the same function as the snow eliminator and save energy at the same time?
- What's a ball-park capital cost for a 40,000 CFM air-to-air heat exchanger unit?





RE: Snow --> AHU intake
What kind of AHU do you have? I would imagine that the AHU you have is a typical AHU with 2 stage HEPA filters. You could use a desiccant wheel, but cost would probably be about the same once you added in modifing the existing AHU and checking flow rates to make sure you have not lost any.
Yes. Another thing you can do is make the intake opening of the hood parallel with the ground and maybe go buy filter media that you can place on the intake hood to catch the snow during the winter.
I wouldn't think more than 30K fully installed. There's not a lot of material here. Look here for more info: http:
RE: Snow --> AHU intake
As for froast on the filters,you need to install a frost prevention coil on the air intake.No filter or screens are to be installed ahead of the froast coil as it will be clogged up soon.Usually froast coils have wide fin spacing or no fins at all to prevent the build up of ice
RE: Snow --> AHU intake
Thank you very much for the help, much appreciated.
Craig