Humidity measurements

[Creed529]

Hello,
I am trying to find an equation to figure out the amount of moisture being produced/added to an air stream. The situation is this:

10lb/hr Nortec RH2+ steam humidifier
2k cfm with 3 zones(each zone bypasses in order to keep from freezing the A coil etc)
Distribution tube is in the return(not by choice)
Humidifier is rated at 100% when drawing 16 amps, which it is.
no ERV or HRV connected
Space temp is maintained at 67
Space has not been able to get over 37%

FYI, the water has been tested due to a tank failing in less then 1 month. Water is within spec. Conductivity is at the low end, and salt was added to the tank to help in this matter

This one is starting to get to me.

[teddy bear]

I am impressed with 37%RH. As you go higher indoor %RH, expect condensation on the coldest windows in the home. Here is a good calculation program for moisture and heat changes to a air stream.

Keep us posted.

Regards Teddy Bear

https://efficientcomfort.net/asp/Psy...ilCalc_Web.asp

[teddy bear]

I am impressed with 37%RH. As you go higher indoor %RH, expect condensation on the coldest windows in the home. Here is a good calculation program for moisture and heat changes to a air stream.

Keep us posted.

Regards Teddy Bear

https://efficientcomfort.net/asp/Psy...ilCalc_Web.asp

I am adding calc with numbers added.


The in/out inputs predict 6 lbs. per hour.

Measure return air temp/%RH and supply temp/%RH with 2,000 cfm to get an estimate.

[Creed529]

Thanks a lot! I will be sure to save this!