Heat exchanger classification

- Aug 08, 2018-

Heat exchangers can be seen everywhere as heat transfer equipment. They are widely used in industry, especially in areas with high energy consumption. With the rapid development of energy-saving technologies, there are more and more types of heat exchangers, which are suitable for different media and different. Heat exchangers with different working conditions, different temperatures and different pressures have different structures and types. The types of heat exchangers are constantly updated with the development of new and efficient heat exchangers.


    Heat exchangers can be seen everywhere as heat transfer equipment. They are widely used in industry, especially in areas with high energy consumption. With the rapid development of energy-saving technologies, there are more and more types of heat exchangers, which are suitable for different media and different. The structure and type of heat exchangers with different working conditions, different temperatures and different pressures are also different. The types of heat exchangers are constantly updated with the development of new and high-efficiency heat exchangers. The specific heat exchangers are classified as follows:


First, by principle:


1. Direct contact heat exchanger


   The main working principle of this kind of heat exchanger, the heat exchanger factory will be divided into two kinds of media to transfer heat to each other to achieve heat transfer, the contact area directly affects the heat transfer amount. Gas, the other is liquid, mainly heat transfer equipment based on tower equipment, but usually involves mass transfer, so it is difficult to distinguish the relationship with the tower, usually the tower equipment, the cooling tower of the power plant is typical Direct contact heat exchanger.


2. Energy storage heat exchanger (referred to as accumulator)


The heat exchanger is used in a very small amount. The principle is that the heat medium is heated by the solid material to reach a certain temperature, and then the cold medium is heated by the solid matter to achieve the purpose of heat transfer.


3, partition wall heat exchanger


The amount of such heat exchangers is very large, accounting for more than 99% of the total. The principle is that the heat medium transfers heat to the cold medium through metal or non-metal. These heat exchangers are usually called shell-and-tube type, plate type and plate-wing type. Or plate and shell heat exchangers.


Second, classified by heat transfer type


1, no phase change heat transfer


General heat exchanger manufacturers have heaters and coolers.


2, there is phase change heat transfer


Generally divided into a condenser and a reboiler. The reboiler is further divided into a kettle type reboiler, a siphon type reboiler, a reboiler, an evaporator, a steam generator, and a waste heat boiler.


Third, according to the classification of heat transfer elements, tubular heat transfer elements, plate heat transfer elements, non-metallic materials heat exchanger classification, air-cooled heat exchanger classification, according to the classification of enhanced heat transfer elements


    There are many types of heat exchangers, and various types of heat exchangers are used according to the classification of the various types of heat exchangers. Therefore, different types of heat exchangers should be selected according to the medium, temperature, pressure and use occasions. Promote strengths and avoid weaknesses, and bring greater economic benefits.