Is it isenthalpic or does the enthalpy increase before and after steam depressurization?
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Before depressurization, the steam pressure is 104 kg/cm2G at 325°C; after depressurization, the pressure is 9 kg/cm2G. Questions: 1. Does the enthalpy remain unchanged or increase before and after depressurization? 2. What is the steam temperature after pressure reduction? Heat exchange between the system and the surroundings is not considered.
The adiabatic throttling process before and after the pressure reducer is an isenthalpic process; therefore, the enthalpy value remains unchanged before and after pressure reduction! Before pressure reduction, the pressure is 104 kilograms, the temperature is 325 degrees, and the enthalpy value is 2785 KJ/KG – it is superheated steam. After pressure reduction, the pressure is 9 kilograms and the temperature is approximately 180 degrees