Vaisala DRYCAP DMT340 SERIES Guia do Utilizador descarregar pdf (Página 167)

Appendix A ______________________________________________________ Calculation Formulas

VAISALA ______________________________________________________________________ 167

The water vapor pressure is calculated using:

100

RHP 

(7)

Parts per million by volume is calculated using:



ppm





(8)

Symbols:

= dewpoint temperature (°C)

= water vapour pressure (hPa)

Pws

= water vapour saturation pressure (Pa)

= relative humidity (%)

= mixing ratio (g/kg)

= atmospheric pressure (hPa)

= absolute humidity (g/m3)

= temperature (K)

= enthalpy (kJ/kg)

1 2 ... 162 163 164 165 166 167 168 169

Sem comentários

Vaisala DRYCAP DMT340 SERIES Guia do Utilizador Página 167