EcoRenovator - View Single Post - Propane (R-290) for heat pumps?

buffalobillpatrick · 11-12-14, 12:52 PM

My comment :
" So it seems that R22 fixed oriface expansion devices will flow about 35% more R290"

possibly holds true at the same pressures, but R290 generally operates at lower pressure,
which may make the liquid flows more even. ?

@50C R22 is about 38PSI higher than R290

11-12-14, 12:52 PM	#246
buffalobillpatrick Master EcoRenovator Join Date: Mar 2014 Location: Florissant, Colorado Posts: 599 Thanks: 814 Thanked 59 Times in 55 Posts	My comment : " So it seems that R22 fixed oriface expansion devices will flow about 35% more R290" possibly holds true at the same pressures, but R290 generally operates at lower pressure, which may make the liquid flows more even. ? @50C R22 is about 38PSI higher than R290 Last edited by buffalobillpatrick; 11-12-14 at 12:54 PM..