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Forum: Geothermal & Heat Pumps

11-10-21, 12:31 PM

Replies: 8

Replacement for R-12

Views: 5,853

Posted By CarbonKevin

Check out R-290, aka Propane. It's a good...

Check out R-290, aka Propane. It's a good replacement for R-12 and R-22 (not sure why you haven't edited your original post, I'm still not clear on which one you're actually asking about). I've been...

Forum: Solar Heating

06-07-16, 08:55 PM

Replies: 7

Calculating BTUs from hot air

Views: 6,873

Posted By CarbonKevin

Correct me if I'm wrong, but I believe moist air...

Correct me if I'm wrong, but I believe moist air requires a greater input of energy to achieve the same delta t as would a comparable volume (or volumetric flow) of dry air.

Forum: Solar Heating

06-07-16, 03:09 PM

Replies: 7

Calculating BTUs from hot air

Views: 6,873

Posted By CarbonKevin

Use a psychometric chart and factor in humidity....

Use a psychometric chart and factor in humidity. There is a significant difference in the energy carried by dry air vs humid air, that 1.08 number is a vast oversimplification of the system you're...

Forum: Other Improvements

10-08-11, 09:01 AM

Replies: 15

Spray foam equipment

Views: 13,987

Posted By CarbonKevin

I'm doing my basement over the next few weeks;...

I'm doing my basement over the next few weeks; I'm not quite this high-tech, just using the 40lb boxed kits.

This did give me a good idea though...I've got a length of electric pipe heater cord,...

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