It is suitable for heat exchangers with different media, different working conditions, different temperatures and different pressures, and the structure types are also different. The specific classification of heat exchangers is as follows:

1 , the recuperative heat recuperative heat exchangers are two different temperatures in the fluid flow space being separated wall, the convective heat exchange between the walls, the two fluids through the heat conducting wall and the fluid. Partition wall heat exchangers include shell-and-tube heat exchangers, double-pipe heat exchangers and other types of heat exchangers. The partition wall heat exchanger is the most widely used heat exchanger.

2 , regenerative heat regenerative heat exchanger through the heat regenerator made of solid material, the heat transfer from the high temperature fluid to the low temperature fluid, the first heat medium by heating the solid material reaches a certain temperature, and then cool the solid medium The substance is heated to achieve the purpose of heat transfer. Regenerative heat exchangers include rotary type and valve switching type.

3 , the fluid connection indirect heat exchanger fluidly connected indirect heat exchanger, the two surfaces of a heat exchanger in which the heat carrier circulating connecting the heat exchanger, the heat carrier fluid in the high temperature and low temperature heat exchanger Circulate between fluids, receive heat in the high-temperature fluid, and release the heat to the low-temperature fluid in the low-temperature fluid heat exchanger.

4 , direct contact heat exchanger is also known as hybrid heat exchangers , such heat exchangers it is in direct contact with two fluids, the mixing apparatus such as a heat exchange with each other, cooling tower, the gas condenser.

5 , double heat both surfaces of formula soda by indirect heat exchange and heat transfer device with two mixed water of direct heat exchange mode. Compared with steam-water surface indirect heat exchange, it has higher heat exchange efficiency; compared with steam-water direct mixed heat exchange, it has higher stability and lower unit noise.

1. Heater The heater heats the fluid to the necessary temperature, but there is no phase change in the heated fluid.

2. Preheater The preheater preheats the fluid to provide standard process parameters for process operations.

3. Superheater The superheater is used to heat the fluid (process gas or steam) to a superheated state.

4. Evaporator The evaporator is used to heat the fluid to a temperature above the boiling point to evaporate the fluid, generally with a phase change.

It can be divided into: floating head heat exchanger, fixed tube sheet heat exchanger, U-shaped tube sheet heat exchanger, plate heat exchanger, etc.