word
Abstract
Heat exchanger is part of the thermal fluid heat transfer to cold fluid equipment, in order
to realize the different temperature of heat transfer between fluid, also called heat exchanger.
Heat exchanger is to realize the heat exchange and transmission in the process of chemical
production indispensable equipment, in the heat exchanger, there are at least two different
fluid temperature, fluid temperature is higher, one is gives off heat, the other is a low
temperature, absorption of heat.
In chemical, petroleum, power, refrigeration, food and other industries widely used in all
kinds of heat exchanger, and they are universal equipment, these industry occupies very
important position. Optional constant development of the industry in our country, to the
requirement of increasing the energy utilization, development and conservation, the
requirement of the heat exchanger is also growing. The design and manufacture of heat
exchanger structure improvement and the heat transfer mechanism of research is very active,
appeared some new high efficiency heat exchanger. According to different purposes, the heat
exchanger can be heat exchanger, heater, cooler, evaporator, condenser, etc. Because of the
different conditions of use, heat exchanger can have various forms and structures. In
production, heat exchanger is a separate equipment sometimes, sometimes, is a part of the
process equipment.
Key Words：Heat exchanger；Shell and tube heat exchanger；Floating-head type
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