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Thread: dehumidification of OA
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04-22-2011, 06:05 PM #1
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dehumidification of OA
How many lbs/hr of dehumidification (latent heat) is required to condition 2000 cfm of 93Fdb/75wb air down to 75db/61wb
does 51 lbs/hr sound right?
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04-23-2011, 07:25 PM #2
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How did you calculate to get 51?
It might get loud!
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04-25-2011, 06:02 PM #3
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Don't you need to know the relative humidity to do this?
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04-25-2011, 06:35 PM #4
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I believe your looking at about 8 tons
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04-27-2011, 07:16 AM #5
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I used a psych calculator and came up with 53.3 lb/hr
Here are the engineering geek details if you are interested:
Assuming sea level, air at 93/75 has a density of 14.26 Cu Ft ./lb and contains 102.27 Grains/lb of moisture. At 75/61 it contains 57.91 GR/Lb.
2000CF/min /14.26 cf/lb = 140.25 lb/min X 60 min/hr = 8415 lb/hr of dry air.
The moisture removed = 102.27 gr/lb – 57.91 gr/lb = 44.36 gr/lb.
So 8415 lb/hr X 44.36 gr/lb = 373,295 gr/hr divide by 7000 gr/lb = 53 lb/hr
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