Refrigerator 2 is a refrigerator that operates as an ideal vapor refrigeration cycle, and uses the Same refrigerant and evaporation and condensing temperatures as Refrigerator 1. In Cooler 2, the working fluid must be admitted by the compressor only in the form of vapor saturated, and must leave the compressor in the form of superheated steam with enthalpy equal to 1640 kJ/kg. Differently from Refrigerator 1, the cycle operates with an expansion valve (isenthalpic process). For this 2nd step, you must determine the following design parameters: a) The rate of cooling and the rate of heat rejection in the condenser. b) The power of the compressor; c) The COP of the cycle. For the energy balance, make the following considerations: - Permanent regime; - Variation of kinetic and potential energy are negligible; - Compressor and expansion valve operate adiabatically; - Evaporation and condensation steps do not involve work
Step: Evaluate the performance of Refrigerator 2.
Refrigerator 2 is a refrigerator that operates as an ideal vapor refrigeration cycle, and uses the
Same refrigerant and evaporation and condensing temperatures as Refrigerator 1.
In Cooler 2, the working fluid must be admitted by the compressor only in the form of vapor
saturated, and must leave the compressor in the form of superheated steam with enthalpy equal to 1640 kJ/kg.
Differently from Refrigerator 1, the cycle operates with an expansion valve (isenthalpic process).
For this 2nd step, you must determine the following design parameters:
a) The rate of cooling and the rate of heat rejection in the condenser.
b) The power of the compressor;
c) The COP of the cycle.
For the energy balance, make the following considerations:
- Permanent regime;
- Variation of kinetic and potential energy are negligible;
- Compressor and expansion valve operate adiabatically;
- Evaporation and condensation steps do not involve work.
Please, make it typeable, written in virtual text, do not do it by hand and do not take a photo, it interferes with the understanding of the lyrics.
Step by step
Solved in 3 steps
