Air Conditioning Laboratory Project 99. 10

Rate of Heat removal

1. 
   Measure the temperature and pressure each of the four states described in the
   

2. 
   Measure the mass flow rate of refrigerant (read from the indicator on the sensor).
   
3. 
   OPTIONAL: Read the voltage and current from the fan motor and the power given by the Power Clamp.
   

Analysis:

12. 
    Determine the specific enthalpy h at each of the four states using the refrigerant tables in the back of your thermodynamics text.
    
13. 
    Using the answers from (1):
    

1. 
   Use eq. 4 to determine the rate of heat removal from the refrigerated space.
   
2. 
   Use eq. 5 to determine the power input to the compressor.
   
3. 
   Use eq. 4 to determine the rate of heat rejection from the refrigerant to the environment.
   

14. 
    Determine the coefficient of performance of the refrigerator and the heat pump using equations 2 and 3 respectively.
    
15. 
    OPTIONAL: Compare the power calculated in 2b to the power obtained by reading