EcoRenovator - View Single Post - Interesting compressor for solar refrigeration and mini A/C

Piwoslaw · 03-28-10, 01:04 PM

Mike, so are you saying that adding a larger heat exchanger (on one or both sides?) increases the efficiency of a heat pump?

I read that DC is better than AC for ventilation fans because it's easier to control speed, plus it almost eliminates noise (no humming or vibrations). I believe it was also slightly more efficient, but I'm not sure about that one. I guess that pumping air in a duct is not the same as compressing refrigerant, so just replacing the AC part with DC won't work?

I think the varying load problem is solved in new units by plumbing 2-3 smaller compressors in parallel, each one being turned on only when needed. This, and using a spiral compressor instead of the older piston style, supposedly greatly increases efficiency.

03-28-10, 01:04 PM	#6
Piwoslaw Super Moderator Join Date: May 2009 Location: Warsaw, Poland Posts: 961 Thanks: 188 Thanked 110 Times in 86 Posts	Mike, so are you saying that adding a larger heat exchanger (on one or both sides?) increases the efficiency of a heat pump? I read that DC is better than AC for ventilation fans because it's easier to control speed, plus it almost eliminates noise (no humming or vibrations). I believe it was also slightly more efficient, but I'm not sure about that one. I guess that pumping air in a duct is not the same as compressing refrigerant, so just replacing the AC part with DC won't work? I think the varying load problem is solved in new units by plumbing 2-3 smaller compressors in parallel, each one being turned on only when needed. This, and using a spiral compressor instead of the older piston style, supposedly greatly increases efficiency.