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Page _____ of _____®Table 12. Enthalpy of Saturated Air for Various Wet Bulb TemperaturesWet Bulb Enthalpy Wet Bulb Enthalpy Wet Bulb Enthalpy Wet Bulb EnthalpyTemp, [deg.F] [Btu / lb] Temp, [deg.F] [Btu / lb] Temp, [deg.F] [Btu / lb] Temp, [deg.F] [Btu / lb]50 20.4 57.5 24.7 65 30.1 72.5 36.350.5 20.6 58 25.1 65.5 30.4 73 36.851 20.9 58.5 25.4 66 30.8 73.5 37.251.5 21.2 59 25.7 66.5 31.2 74 37.752 21.4 59.5 26.1 67 31.6 74.5 38.252.5 21.7 60 26.4 67.5 32 75 38.653 22 60.5 26.8 68 32.4 75.5 39.153.5 22.3 61 27.1 68.5 32.9 76 39.654 22.6 61.5 27.5 69 33.3 76.5 4054.5 22.9 62 27.8 69.5 33.7 77 40.555 23.2 62.5 28.2 70 34.1 77.5 4155.5 23.5 63 28.6 70.5 34.6 78 41.556 23.8 63.5 28.9 71 35 78.5 4256.5 24.1 64 29.3 71.5 35.4 79 42.557 24.4 64.5 29.7 72 35.9 79.5 43General Note : Enthalpy is approximately constant with constant wet bulb temperature. There is a slight variation with dry bulb temperature, but thevariation is typically negligible over the range of dry bulb temperatures common to HVAC applications.WorksheetForm RZ-NA-C-PO Page 49