dehumidification of OA

[riverman]

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?

[duke of earl]

How did you calculate to get 51?

[OVOleg]

Don't you need to know the relative humidity to do this?

[NCVTX]

I believe your looking at about 8 tons

[hvac n-j-near]

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