Chiller Approach Reginaldpickeri S Blog We can monitor and use chiller approach temperatures to determine if the chiller is well maintained. generally, we want to keep the approach temperatures as low as possible. however, chiller approach does gradually increase over the years and it is completely normal. the higher the approach temperature, the lower the chiller efficiency. Approach temperatures should be routinely monitored to ensure that the system is running at the maximum efficiency. reaching maximum chiller efficiency occurs when the facility is producing the greatest tonnage at the lowest kilowatt usage. this typically equates to running at 70 to 75 percent, along with the lowest entering condenser water.
Chiller Approach Youtube The performance of a condenser can be evaluated with the help of the condenser approach. a condenser approach is a difference between liquid refrigerant temperature as measured on the liquid line, and leaving condenser water temperature. generally, the condenser approach for a water cooled chiller will be in the range of 0 to 4 degrees. This hvac training videos goal is to teach hvac technician on how chiller approach works and what to do with it. i give an indepth look at condenser approach. Standard chilled water temperature is 6.7°c (44°f) for supply and 12.2°c (54°f) for return. standard condenser water temperature is 35°c (95°f) for the supply and 30°c (86°f) for the return based on outdoor 35°c (95°f) dry bulb and 27.8°c (82°f) wet bulb temperature. over time, chiller efficiency drops due to fouling, dirty ahu. Any value here represents opportunity for reducing chiller load and obtaining partial free cooling. pl 1 = partial load value #1in kw. dccfm = data center cfm (airflow demand) pl 2 = partial load value #2 in kw (etc.) Δt 2 = Δt 1 – 1˚f (and continue until 0) pls 1 = partial load savings for partial load value #1, etc.
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