How do you find worse dehumidification day?
How do you find worse dehumidification day?
(OP)
Im trying to size a 100% OA unit. What is the typical way to do this? I always thought you would pick the point where the humidity ratio was the highest for that region. Is this the correct way?





RE: How do you find worse dehumidification day?
RE: How do you find worse dehumidification day?
RE: How do you find worse dehumidification day?
I guess it depends on the highest enthalpy value you get in your climate.
Over here we use 30°C/50%.
If it starts to rain in those weather conditions temperatures will drop several degrees.
RE: How do you find worse dehumidification day?
TTFN
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RE: How do you find worse dehumidification day?
It is also found and easy to read in the appendix of the ASHRAE Design Guide for Humidity Control which you can get from ASHRAE or the author. Here is a link to some samples from the author, it gives a free chapter from the Design Guide for Humidity Control
http://www.masongrant.com/html/samples.html
if your area is not listed in the references I mentioned, perhaps try weather underground. You can look at a lot of data there, can go back some years and keep an eye out for what seems to be a re-occuring high dew point.
The way we build has a far greater impact on our comfort, energy consumption and IAQ, than any HVAC system we install
RE: How do you find worse dehumidification day?