Dear Forum....

I am a newbie in refrigeration.

During the expansion the refrigerant come from the higher pressusre and temperature in condenser to the lower pressure and temperature in evaporator.

I want to know... which expansion is used to expanse the refrigerant form the condenser to the evaporator .... is it isotherm ? adiabatic(isentrope) ? Which one is ideal which one real ?

How is the calculation of the outlet temperature after expansion... if the inlet temperature and pressure is known... and the pressure after expansion is also known ?

with isenthalp ? dh=0=cp dT means dT=0 ????

or adiabatic with isentropic coefficient ? how do I get this coefficient ???



Sincerely,

Yen Sindo Boentoro