With the continuous development of the chemical industry and the petroleum industry, the types of materials, operating pressures and degrees of treatment handled by heat exchangers are also more extensive. Due to the ever-changing operating conditions, the requirements for heat exchangers are also varied. Each type of heat exchanger has its own unique advantages and disadvantages. The following problems should be considered when selecting a heat exchanger.
(1) Meet the process requirements. Whether designing a heat exchanger or selecting a type, it must meet the process requirements, such as the type of fluid, the physical and chemical properties of the material, especially the corrosiveness, operating pressure, temperature, allowable pressure drop, and fouling.
(2) The heat exchange efficiency should be high, and the heat transfer film coefficients of the two fluids should be the same or similar to ensure a large heat transfer coefficient.
(3) Simple structure and reliable use.
(4) Easy to install, overhaul, and clean.
There are many types of heat exchangers currently used in production. Each has its own unique advantages. Commonly used heat exchangers are shell-and-tube heat exchangers, plate heat exchangers and plate-and-shell heat exchangers.