What is the function of a heat exchanger? A heat exchanger manufacturer tells you.
Release time:
2021-11-30 15:28
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Heat exchanger manufacturers tell you that a heat exchanger is a device that transfers part of the heat from a hot fluid to a cold fluid, also known as a thermal exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial productions. In chemical production, heat exchangers can be widely used in heaters, coolers, condensers, evaporators, and reboilers, etc.
What is the development of heat exchangers, according to heat exchanger manufacturers?
A heat exchanger is an energy-saving device that achieves heat transfer between two or more fluids at different temperatures. It's a device that transfers heat from a higher temperature fluid to a lower temperature fluid, and is one of the main devices that enables fluid temperatures to reach process specifications to meet process requirements while improving energy efficiency. The heat exchanger industry covers nearly 30 industries including heating, pressure vessels, reclaimed water treatment equipment, chemicals, and petroleum, forming an interconnected industrial chain. Data shows that in 2010, the market size of China's heat exchanger industry was around 50 billion South Korean won, mainly concentrated in the petroleum, chemical, metallurgical, power, shipbuilding, central heating, air conditioning, machinery, food, and pharmaceutical industries. Among them, the petrochemical industry remains the largest market for the heat exchanger industry, with a market size of 15 billion RMB. The market size of heat exchangers in the power and metallurgy industries is approximately 8 billion RMB. The market size of heat exchangers in the shipbuilding industry is over 4 billion RMB. The market size of heat exchangers in the machinery industry is approximately 4 billion RMB. The market size of heat exchangers in the central heating industry exceeds 3 billion South Korean won, and the food industry also has a market of nearly 3 billion South Korean won. In addition, approximately 13 billion RMB worth of specialized heat exchangers are needed in fields such as aerospace, semiconductor devices, nuclear conventional island nuclear islands, wind turbine generator sets, solar power generation, and polysilicon production. The domestic heat exchanger industry has made significant achievements in research on improving energy efficiency, heat transfer efficiency, reducing heat transfer area, reducing pressure drop, and improving equipment thermal intensity. Based on the increasing stable demand for heat exchangers in the petroleum, chemical, power, metallurgical, shipbuilding, machinery, food, and pharmaceutical industries, China's heat exchanger industry will maintain steady growth for a period of time. The average annual growth rate of China's heat exchanger industry from 2011 to 2020 will remain at 10% to 15% until 2020.
What are the classifications of heat exchangers, according to heat exchanger manufacturers?
Heat exchangers suitable for different media, operating conditions, temperatures, and pressures also have different structural forms. The specific classifications of heat exchangers are as follows:
Heat exchanger manufacturers tell you about the classification of heat exchangers according to the heat transfer principle
1. Wall Heat Exchangers: In wall heat exchangers, two fluids at different temperatures flow in spaces separated by a wall. Heat is transferred between the two fluids through heat conduction in the wall and convection of the fluids on the wall surface. Wall-type heat exchangers include shell-and-tube and other types of heat exchangers. Wall-type heat exchangers are widely used. 2. Regenerative Heat Exchangers: Regenerative heat exchangers transfer heat from a high-temperature fluid to a low-temperature fluid through a regenerator composed of a solid substance. The heat transfer medium first heats the solid substance to a certain temperature, and then the cooling medium is heated by passing through the solid substance to achieve the purpose of heat transfer. Regenerative heat exchangers include rotary and valve switching types. 3. Indirect Heat Exchangers with Fluid Coupling: An indirect heat exchanger with fluid coupling, which is a heat exchanger connected to two surface-type heat exchangers circulating a heat carrier. The heat carrier circulates between the high-temperature fluid heat exchanger and the low-temperature fluid. It receives heat from the high-temperature fluid and releases the heat into the low-temperature fluid in the low-temperature fluid heat exchanger. 4. Direct Contact Heat Exchangers: Also known as mixing heat exchangers, these are devices where two fluids directly contact and mix to transfer heat, such as cooling towers and gas condensers. 5. Compound Heat Exchangers: These combine both indirect heat transfer and direct mixing heat transfer methods, like a carbonated beverage type. The heat exchange efficiency of the carbonated beverage surface is higher than that of indirect heat exchange. Compared with direct mixing heat exchange with carbonated beverages, it has higher stability and lower unit noise.
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