The role of Teflon heat exchanger and three specific categories
The specific classification of heat exchangers is as follows:
1. According to the heat transfer principle, the heat exchanger can be divided into:
1. The fluid joint indirect heat exchanger is a heat exchanger in which two external heat exchangers are connected by a heat carrier circulating in it. The heat carrier circulates between the high-temperature fluid heat exchanger and the low-temperature fluid. The high temperature fluid receives heat energy, and the low temperature fluid heat exchanger releases the heat energy to the low temperature fluid. External heat exchangers include shell-and-tube heat exchangers, tube-in-tube heat exchangers and other types of heat exchangers. Regenerative heat exchangers include rotary type and valve switching type.
2. The exterior heat exchanger is two fluids with different temperatures flowing in the space separated by the wall, heat conduction through the wall and convection of the fluid on the surface of the wall, heat exchange is performed between the two fluids.
3. Direct contact heat exchanger Direct contact heat exchanger is a facility where two fluids directly contact for heat exchange, such as cold water towers, gas condensers, etc.
4. The regenerative heat exchanger transfers heat from the high-temperature fluid to the low-temperature fluid through the heat storage body composed of solid objects. The heat medium first passes through the solid object to reach a certain temperature, and then the cold medium passes through the solid object to be heated to make it Achieve the goal of thermal energy transmission
2. Teflon heat exchangers are divided into:
1. The Teflon heat exchanger heats the fluid to the necessary temperature, but there is no phase change in the heated fluid.
2. The preheater preheats the fluid to provide standard process parameters for process operations.
3. The superheater is used to heat the fluid (process gas or steam) to a superheated state.
4. The evaporator is used to heat the fluid to a temperature above the boiling point to evaporate the fluid, generally with a phase change.
3. According to the structure of Teflon heat exchanger, it can be divided into: floating head heat exchanger, fixed tube plate heat exchanger, U-shaped tube plate heat exchanger, plate heat exchanger and so on.
