experiment 9 evaporator analysis & coefficient of performance
DESCRIPTION
Experiment 9 Evaporator Analysis & Coefficient of Performance. I deal Refrigeration C ycle. 1-2 Isentropic compression in a compressor 2-3 Constant-pressure heat rejection in a condenser 3-4 Throttling in an expansion device 4-1 Constant-pressure heat absorption in an evaporator. - PowerPoint PPT PresentationTRANSCRIPT
Experiment 9Evaporator Analysis &
Coefficient of Performance
Ideal Refrigeration Cycle
• 1-2 Isentropic compression in a compressor• 2-3 Constant-pressure heat rejection in a condenser• 3-4 Throttling in an expansion device• 4-1 Constant-pressure heat absorption in an evaporator
4. Evaporator
1. Compressor
2. Condenser
3. Expansion valve
Set-Up Procedure1. Turn on Fans2. Expansion valve up to 45
mm in the rotameter scale
3. Wait 4 min4. Record difference of
pressure5. Record temperature
Shut-Down1. Close receiver outlet V62. Wait 4 min and close
receiver inlet V5
Outlet Pressure of Compressor PH (Psi) Inlet Pressure of Compressor PL(inch Hg, 1 inch Hg=0.491 Psi) Channel 102 Outlet Temperature of Evaporator T2(F) Channel 103 Inlet Temperature of Evaporator T3(F) Channel 104 inlet Temperature of Condenser T4(F) Channel 105 Outlet Temperature of Condenser T5(F) Channel 106 Discharge Temperature of Compressor T6(F) Channel 107 Suction Temperature of Compressor T7(F) Channel 110 (Volts) Volume Flow Rate : Channel 110 × 43.07 (ml/min) Voltage of the Compressor V (volts)Current of the Compressor I (ampere)
Data to Record
Data Analysis
1. Follow the lab manual to do the data analysis.2. Property tables of the refrigerant (HCFC-123) are available on Dr. Alvarado’s website:http://etidweb.tamu.edu/classes/entc370/