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Chiller Approach Temperature

 Chiller Approach




Chiller Approach is a essential check point for ensuring that the chiller is a running at peak efficiency.When the chiller condenser approach temperature is within operating range,it indicate the condenser tubes are clean and chiller runs efficient.When increased approach temperature reduces the efficiency and it need maintenance.

What is Approach Temperature?

Chiller Approach temperature is the temperature difference between the liquid refrigerant temperature that leaving the condenser and the leaving cooling water temperature.This temperature difference is called chiller approach temperature.

Effects of Approach Temperature:-


If the  Condenser approach temperature is within the operating range that indicate the condenser coils are in good condition and cleaned.In this condition chiller runs efficiently.
If the condenser approach temperature is out of the operating range that indicate the condenser coil scaled from inner side due to which heat transfer not done properly it needs cleaning.In this condition chiller efficiency drops.

Accepted difference condenser approach temperature range is varied as per chiller age and it's load on chiller.
For the old model chiller the difference is 
8℃ to 10℃ at full load condition.
In the newer model chiller the difference is 
2℃ to 4℃ at full load condition.
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Comments

  1. UnknownDecember 2, 2020 at 7:46 PM

    Excellent

    ReplyDelete
  2. UnknownDecember 2, 2020 at 7:47 PM

    But You Not mention Evaporator Approach

    ReplyDelete
    Replies
    1. EasywayDecember 3, 2020 at 12:03 AM

      Evaporator Approach is similar like Condenser Approach

      Delete
  3. UnknownApril 12, 2021 at 2:22 AM

    sir . vapour absorption machine tharmax 460 TR chiller in 12.5 and out 12 degree Celsius in ful load .room temperature is 24 .eva in and out delta is .5 .? pls give me suggestions for improvement in the VAM.

    ReplyDelete

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