Performance Testing Or Efficiency Of Refrigeration System.

Performance Of Refrigeration System 

The intention of Performance checking is to  corroborate the performance of Refrigeration system by using  factual Performance  measures. The test will measure net cooling capacity( tons of Refrigeration) and the energy conditions all on the  factual  handling condition.
 
 Definations-
 1) Tons of Refrigeration( TR)- One tons of Refrigeration is the  quantum of cooling  goods produced in one ton of ice melting in a day.
 
 1TR =  3024 kcal/ h, or 12000 btu/ h or 3.516 thermal kw
 
 2) Energy effectiveness rate- EER is calculated by dividing the  quantum of Refrigeration  goods produced in watts to the  quantum energy input consumed to produce that effect in watts at full  cargo condition.
 
 3) Kw/ ton conditions Generally known as a  effectiveness, but actually power input to compressor motor is divided by the refrigeration  goods produced.
 Lower Kw/ ton means that the advanced  effectiveness.
 
 Net Refrigeration Capacity( TR)-
 Thia test include the  dimension of net  junking from the water as it passes through the evaporator.
 For calculating TR we need to Calculate following data.
 
 1) Chilled Water inflow rate flowing through the evaporator coil.
 2) Chilled Water Inlet entering and the outlet leaving temperature.
 
 The tons of Refrigeration can be  attained from the following formula.
 
 TR = ( M × Cp ×( Inlet T- Outlet T)) ÷ 3024
 
 Where,
 M =  Mass inflow rate of stupefied water, kg/ hr
 Cp =  Specific Heat of water in kcal/ kg °C
 Inlet T =  Inlet Temperature Of stupefied water
 Outlet T =  Outlet Temperature of stupefied water.
 
 The accurate temperature  dimension is a  veritably critical in Refrigeration and air  exertion, least count should be at least one Decimal.

 Styles of measuring Water inflow- 

 
 In the absence of online inflow  cadence water inflow can be measured by using following  system. 
 
- None invasive  system would bear a well calibrated ultrasonic inflow  cadence 
 Using which the inflow can be measured without disturbing the system. 
 
- If the inshore pressure drop are close to the design value,  also it can be assumed that the water inflow of the pump is equal to design rated inflow. 
 
 Dimension of Compressor Power- 
 The compressor power can be measured in a  movable  power analyzer which will give you a direct reading in kw. 
 
 still,  also the power can be calculated by the multiplying ampere with voltage and power factor, If not. 
 
 Kw =  Square root of 3 × I × V × cos o 
 
 Heat rejected By Condenser- 
 
 Heat reject =  Cooling  cargo + work done by compressor 
 
 
 Performance computations:
 
 COP =  kw Refrigeration effect ÷ kw input 
 
 EER =  watt Refrigeration effect ÷ watt input 
 
 Kw/ TR =  kw input ÷ tons of Refrigeration effect