# Calculating Saturation Vapor Pressure?

1. May 27, 2012

### CognitiveNet

I'm trying to find the equations or diagrams for two types of Saturation Vapor Pressures:

1) Pw = Saturation vapor pressure at water temperature
2) Pa = Saturation vapor pressure at air dew point

My solution:

Relative humidity = (saturation vapour pressure at dew point)/( saturation vapour pressure at the existing air temperature). Since I know what the relative humidity is, I can find the SVP at dew point if I can calculate the SVP at the existing air temperature.