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Industrial Water Chiller
Water Chiller
LSF series purchasing guide
Oil Chiller
Low Temp. Cold Air Je
Air Conditioner
Swimming Pool Heat Pump
DC Heat Pump
Please choose oil chiller according to heat productivity plus 20%~30%。

激光水冷机
LY series purchasing guide
   

The cooling capacity of oil chiller varies with inlet oil temperature and ambient temperature changing. So when choose, you should notice the oil working temperature and ambient temperature.

The theoretic data are just for reference. Final result should be tested in practice. Please choose the right type according to heating capacity.
choosing and calculating methods
    Method 1: calculate according to circulation pump motor power loss
 
  Q: heating productivity
:
 e.g. P=15000W, n=30%  
  P: principle axis motor power output (W)
Q=15000×0.3=4500W= 3870Kcal/h （1W=0.86Kcal/h）  
  n: power loss (%)      
 
Method 2: calculate according to temperature difference of entering water and returning water
Formula: Q=Cp× P× qv× AT
Q: heating productivity (W)
Cp: specific heat under rated pressure (J/Kg℃)
.....oil: 1967.4J/Kg℃
P: proportion of cooling medium（Kg/m3）
......oil: 876Kg/m3
qv: oil flow (m3/h)

AT：temperature difference（℃）..T2-T1
e.g. qv=2.1m3/h (35L/min), AT=5℃
Q
＝1967.4x876x2.1x5/3600=5027W
＝4323Kcal/h (1W=0.86Kcal/h)
 Method 3: calculate according to water temperature rising rate and seek the rate max.
高精度的水温控制 Formula: Cp· P· v· AT/H
Q: heating productivity (W)
Cp: specific heat under rated pressure (J/Kg℃)
.....oil: 1967.4J/Kg℃
P: proportion of cooling medium（Kg/m3）
......oil: 876Kg/m3
v: oil volume in tank (m3/h)

AT：temperature difference（℃）..T2-T1
e.g. v=500L(0.5m3), AT=8℃
Q
＝1967.4x876x0.5x8/3600=1915W
＝1647Kcal/h (1W=0.86Kcal/h)
   
 
       Zhuhai DVT Refrigeration Equipment Co., Ltd. | Tel.+86.756.8635880Fax+86.756.3892816 Message Board  
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