Face and By-Pass The DX Evaporator Coil For Dehumidifcation
Face and By-Pass The DX Evaporator Coil For Dehumidifcation
(OP)
I have been told if you By-Pass some air around the avaporator coil, you will dehumidify the air while not needing to reheat it.
What is more, the fact that you reduce the air flow through the evaporator coil, you reduce the suction pressure of the cold gas, thereby reducing the evaporating temperature of the coil. Therefor the dew point is lowered and you wring out that much more moisture out of the air. It is claimed you can get the evap temp down to 35*F by starving some some air flow by By-Passing it.
Finally when the By-Pass air is mixed with the Dehimidified air, the result is much drier air that is nonetheless warm, and usually does not need to be reheated before supplying to the space.
Does anybody have any experience with this they would like to share ?
Thank you in advance.
What is more, the fact that you reduce the air flow through the evaporator coil, you reduce the suction pressure of the cold gas, thereby reducing the evaporating temperature of the coil. Therefor the dew point is lowered and you wring out that much more moisture out of the air. It is claimed you can get the evap temp down to 35*F by starving some some air flow by By-Passing it.
Finally when the By-Pass air is mixed with the Dehimidified air, the result is much drier air that is nonetheless warm, and usually does not need to be reheated before supplying to the space.
Does anybody have any experience with this they would like to share ?
Thank you in advance.





RE: Face and By-Pass The DX Evaporator Coil For Dehumidifcation
RE: Face and By-Pass The DX Evaporator Coil For Dehumidifcation
Am I too understand that :
- the suction pressure will drop as there is less cold gas flowing ?
-The temp of the refrigerant evaporation (saturation temp) and thus superheat will drop ?
What can go wrong with the equipment ?
Thx
RE: Face and By-Pass The DX Evaporator Coil For Dehumidifcation
"""What can go wrong with the equipment ?"""
If you over do it the coil will freeze up.
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: Face and By-Pass The DX Evaporator Coil For Dehumidifcation
RE: Face and By-Pass The DX Evaporator Coil For Dehumidifcation
There is no need to ask us for experience. You can work it out psychrometrically.