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

buffalobillpatrick · 11-12-14, 12:36 PM

Just found info R290 vs. R22:

R290 (Propane) has about 35% less liquid viscosity than R22 (1 / 1.5555)

Due to Molecular Mass of R22 (86.5) is almost double that of R290 (44.1)

Refrigerants - Physical Properties

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

Also: Liquid R290 has about 20% better thermal conductivity than R22

11-12-14, 12:36 PM	#243
buffalobillpatrick Master EcoRenovator Join Date: Mar 2014 Location: Florissant, Colorado Posts: 599 Thanks: 814 Thanked 59 Times in 55 Posts	Just found info R290 vs. R22: R290 (Propane) has about 35% less liquid viscosity than R22 (1 / 1.5555) Due to Molecular Mass of R22 (86.5) is almost double that of R290 (44.1) Refrigerants - Physical Properties So it seems that R22 fixed oriface expansion devices will flow about 35% more R290 Also: Liquid R290 has about 20% better thermal conductivity than R22