Finding Temperature at stage four, Refrigeration Cycle

[recreated]

Dear all,

This is for a theoretical system, which is trying to represent an 'actual' vapour compression cycle.

I have the pressure, temperature, enthalpy and entropy at stage four of a single stage cycle. Stage four is the stage where refrigerant leaves expansion valve and enters evaporator.

Is it possible to find the temperature, T4? I know how to use saturation tables, but I think for the evaporator entrance they arn't accurate,, is there any other way of deriving this value? I would love to know.

I have temps., press., entahlpys and entropys at all other stages of cycle so i assume there is some equation to get T4, in theory any way.
Kind Regards

 

[Navin A S]

,Yes, it is possible to find the temperature of stage four (T4) using the pressure, temperature, enthalpy and entropy information you have. The ideal gas law can be used to solve for the temperature given the pressure and entropy. This equation is P = RT/V, where P is the pressure, R is the gas constant, T is the temperature, and V is the volume. You can then use the temperature and pressure information to look up the enthalpy and entropy values in a steam table.