What is a heat exchanger used for and how it works?

What is a heat exchanger used for, and how it work

Heat exchanger

　　1, between the wall type heat exchanger

　　Between the wall heat exchanger, there is a difference in temperature of the two fluids in the space separated by the wall flow, through the wall of the thermal conductivity and fluid convection on the wall surface, between the two fluids for heat transfer. Between the wall heat exchanger shell and tube type, casing type and other heat exchangers. The wall heat exchanger is currently the most widely used.

　　2, heat storage heat exchanger

　　Heat storage type heat exchanger through the solid material composition of the heat storage body, the heat from the high temperature fluid to the low temperature fluid, the hot medium through the heating of the solid material to reach a certain temperature, the cold medium and then through the solid material to be heated, so that it achieves the purpose of heat transfer. Heat storage type heat exchanger has rotary, valve switching type.

　　3, fluid connection indirect heat exchanger

　　Fluid connection indirect heat exchanger, is the two surface heat exchanger by the heat carrier in which the cycle is connected to the heat exchanger, the heat carrier in the high temperature fluid heat exchanger and low-temperature fluid circulation between the high-temperature fluid to receive heat, in the low-temperature fluid heat exchanger to release the heat to the low-temperature fluid.

　　4、Direct contact heat exchanger

　　Also known as the mixed heat exchanger, this heat exchanger is a direct contact between the two fluids, mixed for heat transfer equipment, for example, a cold water tower, a gas condenser.

　　5、Complex heat exchanger

　　Both steam-water surface indirect heat transfer and water-water direct mixing heat transfer of two types of heat transfer equipment. Compared with the steam-water surface indirect heat transfer, it has a higher heat transfer efficiency; with the direct mixing of steam and water heat transfer, it has higher stability and lower unit noise.

　　Keep the pipe network clean: both before and after the completion of the work, the pipe network must be cleaned to avoid the phenomenon of heat exchanger clogging. Also pay attention to timely cleaning of the decontaminator and the filter, so that the whole work is completed successfully.

　　Serious gatekeeper softened water: for water quality is quite important, in the softened water quality treatment of the premise, first of all, we must carefully check the system of water and softening tank water quality issues, to determine the qualified before injection processing.

　　New system test: For some new systems, can not immediately alternate with the use of heat exchangers, first of all need to run the new system in a specified period, so that it has a mode of operation, this time the heat exchanger can be incorporated into the system to use the purpose of doing so is to avoid impurities in the pipeline network to destroy the heat exchanger equipment.

　　Heat exchangers and other industrial machinery in many large-scale equipment is indispensable, it plays a very important role, I believe you read today's article also have a certain understanding of the heat exchanger. Heat exchanger, because of the different principles, they are also divided into many categories, different equipment will be applied to different types of heat exchangers.