At present, China's plate cooler market is mainly concentrated in the fields of petroleum, chemical industry, metallurgy, electric power, shipping, refrigeration and air conditioning, machinery, food, and pharmaceuticals. The petroleum and chemical industries are the main application areas of plate coolers, accounting for about 30% of the market share of coolers. Almost all processes in petroleum and chemical production have heating, cooling or condensation processes, and plate coolers are required. So, what kind of past and present life have plate coolers experienced?
At present, the plate coolers required by the two major industries of power and metallurgy account for about 16% of the cooler market. Due to the large number of applications of secondary heat exchangers and condensers for refrigeration and air conditioning evaporators in urban central heating centers, the refrigeration and air conditioning industry accounts for about 8% of the market share of the heat exchanger industry. The shipbuilding industry uses a large number of central coolers and other heat exchange equipment, accounting for about 8% of the market share of the heat exchanger industry; the machinery industry applies a large number of oil coolers, intercoolers and other heat exchangers in automobiles, construction machinery, and agricultural machinery , Accounting for about 8% of the market share of the heat exchanger industry. In addition, in the fields of food and medicine, the amount of heat exchangers is also large.
In the 1920s, a plate cooler appeared, which replaced the tube with a plate. The structure was compact, the heat transfer effect was good, and it was used in the food industry. In the early 1930s, Sweden first made spiral plate heat exchangers. Next, a plate-fin heat exchanger made of copper and its alloy materials was manufactured by the UK by brazing, which was used to dissipate heat from aircraft engines. In the late 1930s, Sweden produced the first plate and shell heat exchanger for a pulp mill.
Around the 1960s, due to the rapid development of space technology and cutting-edge science, various high-efficiency compact coolers were urgently needed, coupled with the development of stamping, brazing and sealing technologies, the heat exchanger manufacturing process was further improved, and Promote the vigorous development and widespread application of compact plate surface heat exchangers. In addition, since the 1960s, in order to meet the needs of heat exchange and energy saving under high temperature and high pressure conditions, typical shell and tube heat exchangers have also been further developed. In the mid-1970s, in order to strengthen heat transfer, a heat pipe cooler was created based on research and development of heat pipes.
After the 1980s, a large number of enhanced heat transfer elements were introduced to the market, such as baffle rod heat exchangers, new structure high-efficiency heat exchangers, high-efficiency reboilers, high-efficiency condensers , double-shell heat exchangers, plate and shell Type heat exchanger, surface evaporative air cooler and other efficient coolers.