Data for steady-state operation of a vapor-compression refrigeration cycle with Refrigerant 22 as the working fluid are given in the table below. The states are numbered as in the figure below. The mass flow rate of refrigerant is 8.42 lb/min. Heat transfer from the compressor to its surroundings occurs at a rate of 3.5 Btu per lb of refrigerant passing through the compressor. The condenser is water-cooled, with water entering at 65°F and leaving at 80°F with negligible change in pressure. out

Elements Of Electromagnetics
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Data for steady-state operation of a vapor-compression refrigeration cycle with Refrigerant 22 as the working fluid are given in the
table below. The states are numbered as in the figure below. The mass flow rate of refrigerant is 8.42 lb/min. Heat transfer from the
compressor to its surroundings occurs at a rate of 3.5 Btu per lb of refrigerant passing through the compressor. The condenser is
water-cooled, with water entering at 65°F and leaving at 80°F with negligible change in pressure.
3
t
Expansion
valve
lout
Condenser
Compressor
Evaporator
www
ein
Saturated or
superheated vapor
Transcribed Image Text:Data for steady-state operation of a vapor-compression refrigeration cycle with Refrigerant 22 as the working fluid are given in the table below. The states are numbered as in the figure below. The mass flow rate of refrigerant is 8.42 lb/min. Heat transfer from the compressor to its surroundings occurs at a rate of 3.5 Btu per lb of refrigerant passing through the compressor. The condenser is water-cooled, with water entering at 65°F and leaving at 80°F with negligible change in pressure. 3 t Expansion valve lout Condenser Compressor Evaporator www ein Saturated or superheated vapor
Determine:
State
1
2
3
4
р
Th
(lbf/in.2) (°F) (Btu/lb)
47.54 10
105.4
274.7
120
121.8
274.7 100 39.39
(a) the refrigeration capacity, in tons.
(b) the compressor power, in horsepower.
(c) the mass flow rate of the condenser cooling water, in lb/min.
47.54 10 39.39
Transcribed Image Text:Determine: State 1 2 3 4 р Th (lbf/in.2) (°F) (Btu/lb) 47.54 10 105.4 274.7 120 121.8 274.7 100 39.39 (a) the refrigeration capacity, in tons. (b) the compressor power, in horsepower. (c) the mass flow rate of the condenser cooling water, in lb/min. 47.54 10 39.39
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