Heat exchangers are often used in petroleum, chemical, light industry, pharmaceutical, energy and other industrial production to heat low-temperature fluids or cool high-temperature fluids, to vaporize liquids to steam or to condense steams to liquids. The heat exchanger can be either a unit device, such as a heater, a cooler, and a condenser; it can also be a component of a certain process equipment, such as a heat exchanger in an ammonia synthesis tower.
Heat exchangers are important unit equipment in chemical production. According to statistics, the tonnage of heat exchangers accounts for about 20% of the entire process equipment, and some even as high as 30%. Its importance can be imagined.
