delta(t)
Calculates the Slope of the Saturation Vapour Pressure vs Temperature Curve.
Units
- kPa/°C.
Inputs
- t (°C) - air temperature.
- function estar(t) - saturated vapour pressure.
Returns
if (t >= 0.0)
return(2504.0*exp(17.27 * t/(t+237.3)) / sqr(t+237.3))
else
return(3549.0*exp( 21.88 * t/(t+265.5)) / sqr(t+265.5))