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What are the classifications of heat exchangers
The following classification is as follows:
Classification according to the principle of heat transfer
1, inter wall heat exchanger
The wall type heat exchanger is a kind of two fluid with different temperature. It flows through the space separated by the wall. It flows through the wall surface and the convection on the wall surface. The two fluids exchange heat. The inter wall heat exchangers have tube shell, casing and other types of heat exchangers. The inter wall heat exchanger is the most widely used heat exchanger at present.
2. Regenerative heat exchanger
The regenerative heat exchanger transfers heat from high temperature fluid to cryogenic fluid through solid heat storage fluid, and the thermal medium first reaches a certain temperature after heating solid material, then the cold medium is heated through solid material, so as to achieve the purpose of heat transfer. The regenerative heat exchanger has the rotary type, the valve switch type and so on.
3. Fluid connection indirect heat exchanger
Fluid connection indirect heat exchanger, the two surface type heat exchanger by a heat exchanger which connects the heat carrier circulation, circulation between the heat carrier and the low-temperature heat exchanger fluid in high temperature fluid, receiving heat at high temperature in the low temperature fluid, fluid heat exchanger to release the heat to low temperature fluid.
4. Direct contact heat exchanger
It is also known as a hybrid heat exchanger, which is a device that directly contacts and interacts with each other for two kinds of fluids, such as cooling towers, gas condensers, etc.
5. Compound heat exchanger
There are two kinds of heat exchange equipment for indirect heat exchange of steam water surface and direct mixing of water and water. Compared with the indirect surface heat exchanger, the steam heating has higher heat transfer efficiency, and has higher stability and lower unit noise compared with the direct mixing heat transfer of steam water.