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(Solved): a) If the ammonia flow rate through the valve is 5 kg/s and it leaves the vaporizer in saturated vap ...
a) If the ammonia flow rate through the valve is 5 kg/s and it leaves the vaporizer in saturated vapor, determine the amount of heat that can be removed by the refrigeration system at -10 oC.
b) If the duties of the vaporizer (at -10 oC) and heat exchanger that cools compressor outlet to saturated liquid at 10 oC are 1600 kW and 2000 kW respectively, the power of the compressor is ___, the coefficient of performance (COP) of the refrigeration system is ____.
Saturated liquid ammonia at \( 10^{\circ} \mathrm{C} \) is partially vaporized through a letdown valve to provide a refrigeration system at \( -10{ }^{\circ} \mathrm{C} \). You can use the following table for ammonia properties.
Expert Answer
We will assume the following: -The system is analyzed as a control volume at steady state -Except for the expansion valve, all processes of the refrigerant are internally reversible -Compressor and expansion valve operate adiabatically -Kinetic and p