Calculation of Absolute Temperature,Saturated vapor pressure(Ice at t<0℃),Saturation humidity ratio
& Dry-bulb temperature-Absolute humidity of saturated air Graph.

Keyword

Sonntag Equation,Absolute Temperature,Saturated vapor pressure of water or ice,Absolute humidity of saturated air,dry-bulb temperature-Absolute humidity of saturated air Graph.

Reference

・『JIS Z8806 湿度-測定方法』
・『湿度と蒸発』(上田政文)
・『建築設備設計マニュアル 第三版 Ⅰ空気調和編』(社団法人建築設備技術者協会)
・『理科年表 平成19年2007』(国立天文台編).

Remarks

・T=t+273.15.
・Saturated vapor pressure(kPa)={a×T^(-1)}+{b}+{c×10^(-2)×T}+{d×10^(-5)×T^2}+{e×ln(T)} Sonntag Equation.
・Absolute humidity of saturated air(kg/kg(DA))=0.622×Saturated vapor pressure(kPa)/(atmospheric pressure(kPa)-Saturated vapor pressure(kPa)).
・Absolute humidity of saturated air(g/m^3)=804×Saturated vapor pressure(kPa)/((1+0.00366×Dry-bulb temperature)×atmospheric pressure(kPa)).

History

・2014/08/06:layout change.
・2009/03/15:Moved from www.am-consulting.co.jp to here.