de-humidification with a DX coil 1

[mechanicaldup]

I have an application where the outside design condition is 35°C, 75 % RH.
The room design condition is 22°C, 50 %RH. A relative small amount of outside air is supplied to the room (infiltration)

How do you indicate on the psychrometric cart the de-humidification process? How do you calculate the expected %RH in the room?

thks

 

[SLBforever]

To the forum:

Trane has two good papers on the subject.
Here are the links:

http://www.trane.com/commercial/library/vol29_4/ENews_29_04_082800.pdf

http://www.trane.com/commercial/library/vol33_2/ADMAPN011EN_0704.pdf

Give me your feed back

SLB

 

[lilliput1]

You should determine the humidification load then determine how to handle it such that CFM x .69143 x (grains/lb leaving air - grains/lb entering air) = Btu/hr humidification load

 

[mechanicaldup]

thks SLBforever
I will have look at the trane literature