Homework Help is Here – Start Your Trial Now!
Science
Advanced Physics
In a conventional refrigeration cycle which uses Freon-12 as the refrigerant, the temperature  of the evaporating fluid is -20°C. It leaves the evaporator as saturated vapor at -20°C and enters the  compressor. The pressure in the condenser is 1.40 MPa. The liquid leaves the condenser and enters the  expansion valve at 40°C. It is proposed to modify this cycle by adding a heat exchanger that would superheat  the suction vapor to 25°C.  Draw  the schematic and ts diagram 2.1 Compare the coefficient of performance of these two cycles. 2.2 What is the temperature of the refrigerant entering the expansion valve with the heat  exchanger? 2.3 For a load of 50 kW, determine the volume flow rate for both cycles.

In a conventional refrigeration cycle which uses Freon-12 as the refrigerant, the temperature  of the evaporating fluid is -20°C. It leaves the evaporator as saturated vapor at -20°C and enters the  compressor. The pressure in the condenser is 1.40 MPa. The liquid leaves the condenser and enters the  expansion valve at 40°C. It is proposed to modify this cycle by adding a heat exchanger that would superheat  the suction vapor to 25°C.  Draw  the schematic and ts diagram 2.1 Compare the coefficient of performance of these two cycles. 2.2 What is the temperature of the refrigerant entering the expansion valve with the heat  exchanger? 2.3 For a load of 50 kW, determine the volume flow rate for both cycles.

icon
Related questions
Question

 In a conventional refrigeration cycle which uses Freon-12 as the refrigerant, the temperature 
of the evaporating fluid is -20°C. It leaves the evaporator as saturated vapor at -20°C and enters the 
compressor. The pressure in the condenser is 1.40 MPa. The liquid leaves the condenser and enters the 
expansion valve at 40°C. It is proposed to modify this cycle by adding a heat exchanger that would superheat 
the suction vapor to 25°C. 

Draw  the schematic and ts diagram


2.1 Compare the coefficient of performance of these two cycles.

2.2 What is the temperature of the refrigerant entering the expansion valve with the heat 
exchanger?
2.3 For a load of 50 kW, determine the volume flow rate for both cycles. 

Expert Solution
steps

Step by step

Solved in 4 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer