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Fluids / R-410A (saturated liquid)

Latent heat of vaporisation of R-410A (saturated liquid) vs temperature

R-410A saturated liquid from −40 to 60 °C — the high-pressure blend in most modern split systems and heat pumps, running roughly 60 % above R-134a pressures.

Latent heat of vaporisation in kJ/kg, from -40 to 60 °C along the saturation curve. The chart and the table below are the same numbers; the table is the one you can copy.

Latent heat of vaporisation kJ/kg
Latent heat of vaporisation of R-410A (saturated liquid) in kJ/kg, from -40 to 60 °C-40 °C — 276.2 kJ/kg-30 °C — 267 kJ/kg-20 °C — 256.9 kJ/kg-10 °C — 245.6 kJ/kg0 °C — 233 kJ/kg10 °C — 218.9 kJ/kg20 °C — 202.9 kJ/kg30 °C — 184.5 kJ/kg40 °C — 162.9 kJ/kg50 °C — 136.5 kJ/kg60 °C — 102 kJ/kg120140160180200220240260-40-30-20-100102030405060Temperature (°C)Latent heat of vaporisation (kJ/kg)
R-410A (saturated liquid) — everything else at 20 °C (default)
Density1,046 kg/m³
Vapour pressure1,444.2 kPa
Dynamic viscosity0.14 mPa·s
Specific heat1.6 kJ/(kg·K)
Thermal conductivity0.099 W/(m·K)
Latent heat of vaporisation by temperature
Temperature (°C)Latent heat of vaporisation (kJ/kg)Row
-40276.2published
-30267published
-20256.9published
-10245.6published
0233published
10218.9published
20202.9published
30184.5published
40162.9published
50136.5published
60102published

Rows marked published land exactly on a source anchor and are the tabulated figure. The rest are this library’s interpolation between the two anchors either side — good enough to design with, and said out loud so you can decide that for yourself.

NIST REFPROP / ASHRAE Handbook—Fundamentals, Ch. 30, saturated liquid line · validated -40 to 60 °C · interpolated between 11 published anchors (values held, not extrapolated, past the ends) · saturated state only

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