A device in which heat exchange occurs between a high-temperature fluid and a low-temperature fluid through a solid wall surface is called a heat exchanger, abbreviated as a heat exchanger. Generally, devices whose heat transfer mechanism is mainly thermal radiation, such as furnaces and boilers, do not belong to heat exchangers.

A device in which high-temperature and low-temperature fluids exchange heat through a solid wall is called a heat exchanger, or simply a heat exchanger. Generally, devices whose heat transfer mechanism is mainly thermal radiation, such as furnaces and boilers, are not considered heat exchangers. As an essential unit operation device in the process, heat exchangers have important applications in various fields of the national economy. According to statistics, in modern petrochemical enterprises, the investment in heat exchangers accounts for about 40%. In thermal power plants, evaporators, superheaters, economizers, and air preheaters are all heat exchangers. In fact, most of the energy released by fuel combustion is transferred through heat exchange equipment. The utilization of some low-grade energy, such as waste heat, is even more inseparable from heat exchangers. Of course, the correct and reasonable design and manufacture of heat exchangers is one aspect of the problem; on the other hand, the rational use of existing heat exchangers is also worthy of attention. Therefore, the role of heat exchangers should be studied.

Solutions to the problem of insufficient heat transfer in the heat exchanger:

1. Re - select the steam trap and install a steam trap regulating valve in the condensate pipeline. This steam trap regulating valve achieves regulation and control through an electronic regulation system based on the water level change of the heater. The water level signal of the heater passes through a differential pressure transmitter, a proportional - integral unit, an operation unit, and finally, an electric actuator manipulates the regulating valve. By adjusting the opening degree of the valve, the amount of water discharged is controlled. This can timely discharge the condensate in the heat exchanger and ensure the heat transfer effect.

2. Pay attention to controlling the quality of the circulating water in daily operations, strengthen water quality supervision, and try to minimize the occurrence of fouling in the heat exchanger.

3. Find ways to solve the problem of the system's steam metering device as soon as possible.

4. Regularly disassemble and inspect the heater or perform back - flushing, remove debris inside the heater, and improve the efficiency of the heater.

In addition, when the system is filled with water in the initial stage of equipment operation, the air in the heater must be completely discharged to avoid affecting the heat transfer quality.