While studying a heat exchanger, I have encountered a hydrogen rich fluid stream (enters at 90° Celsius and exits at 120° Celsius) which has composition given in the following form:
Air Humidity/Fluid composition: 1% (2.5 bar abs)/Mass fraction of hydrogen=0.02
For the heat exchanger analysis, I need to calculate several properties of this mixture like enthalpy, specific heat.
Property reference software like Coolprop and Refprop give data for gas mixtures, but not for air-gas mixtures.
How should I start to calculate the properties of this air-gas mixture? I guess the humidity can be neglected safely because it is just 1%.