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Table 1 Properties of working fluids

From: Performance analysis and working fluid selection for geothermal energy-powered organic Rankine-vapor compression air conditioning

Substance Molecular mass T crit ODP GWP
(g/mol) (°C) (100 years)
R290 44.10 96.68 0 3
R600 58.13 151.98 0 20
R600a 58.13 134.67 0 20
R123 152.93 183.68 0.012 76
R245fa 134 154.05 0 820
R134a 102.03 101.1 0 1,320
  1. ODP ozone depletion potential, relative to R11, GWP global warming potential, relative to CO2.