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Comparative analysis of main types and characteristics of heat exchangers
Mar 31, 2020

Heat exchanger is a heat exchange device, with a low temperature of the material to another cooling high temperature material, because is applicable medium is cycle, so I decided to cooling and cooling material must is the shape of the fluid, such as high temperature of compressed air with water to cool glycol hydraulic oil cooler etc. Most of the heat exchanger under the condition of the main purpose is to obtain the cooling of the material, so the heat exchanger is often referred to as the cooler, useful also high temperature fluid heating a fluid, such as steam to heat the cold water, when it is a heater, using the principles are the same.


According to different cooling medium, the heat exchanger can be divided into two main classes, air cooling and water cooling, wind or water to cool other substances. The advantage of the air-cooled heat exchanger is made, any local natural wind, using range is wide, especially in the field of mechanical, more difficult to get water, so the air cooling of use. The air-filled disadvantage is full cooling effect, low efficiency, after all, is the natural wind, which is fan, still can't compared with water cooling effect.


In terms of structure, the main air-cooled heat exchanger is plate-fin type, or tube type, that is, copper tube with fins. For example, the outer air conditioner is a typical plate-fin air cooling.


Specific heat of water is the largest, is one of the best water cooling medium, some high temperature only water cooling velocity of media. Such as the large engineering machinery, power larger air compressor, water treatment, etc. In the environmental protection industry water-cooled heat exchanger with high efficiency, good cooling effect, the disadvantage is high cost, need water, the water quality has certain requirements.

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