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APPENDIX 2 - CONSTANTS


Specific heat of water

75.4 J mol-1 °C-1

Latent heat of fusion

6.0 kJ mol-1

Empirical psychrometer constant*

0.000660 kPa °C-1

Specific heat of air

Cp = 29.3 J mol-1 °C-1

Molecular mass of air

Ma = 29 g mol-1

Molecular mass of water

Mw = 18 g mol-1

Gas constant

R = 8.3143 J mol-1 °C-1

Stefan-Boltzmann constant

5.6697 × 10-8 W m-2 K-4

Note: *Ferrel (1886) according to Harrison (1963)


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