The basic working principle of a typical heat pipe from the shell and tube heat pipe, the wick and the cover composition, pumped into the inner tube 1.3 × (10-1 ~ 10-4) after Pa negative pressure filled with an appropriate amount of the working fluid, so close to the the inner wall of the capillary porous wick material sealed after filled with liquid. One end of the tube to the evaporator section (heating), the other end of the condenser section (cooling section), depending on the application needs to be arranged in the middle of two adiabatic section. When the end of the heat pipe heat sewing wool core liquid evaporates, the vapor pressure at a small flow of heat release and the other end to condense into a liquid, the liquid and then along by capillary force of the porous material back into the evaporator. This cycle does not have the heat transmitted from the other end of the heat pipe - end. In achieving this heat pipe heat transfer, the process comprising the following six major interrelated: (1) heat transfer from the heat source to the (liquid - vapor) through the heat pipe wall and wick the working fluid filled interface ; (2) the liquid in the evaporating section (liquid - vapor) evaporated boundary surface; (3) the steam from the steam chamber of the condenser section evaporator flows; (4) the steam vapor in the condensing section. Liquid boundary surface condensation: (5) heat from the (vapor - liquid) interface through the wick, the liquid and the wall to pass the cold source: (6) the working fluid in the wick by capillary action so condensed back to the evaporator section. Heat pipe heat exchanger main features:. A heat pipe heat exchanger can make through the heat exchanger in the hot and cold fluids completely separate partition, a single heat pipe during operation because of wear, corrosion, overtemperature causes damage, but also a single heat pipe failure, and hot and cold fluids doping does not occur. So heat pipe heat exchanger for easy course, explosive, corrosive and other heat transfer fluid applications with high reliability. . b heat pipe heat exchanger hot and cold fluid flow completely separate, it is easier to achieve cold, completely countercurrent heat exchanger fluid; at the same time both the hot and cold fluid flow in the tube, the heat transfer coefficient due to the much higher flow tube heat transfer coefficient in the flow tube, and both sides of the heating surface can extend the use of the heating surface. For low-grade thermal energy recovery is very economical. c. For high dust content of the fluid, the heat exchanger tube heat pipe structure by size, extended heating surface form, in order to solve the heat exchanger wear gray plugging problems. d. heat pipe heat exchanger is used for corrosive flue gas with heat recovery, you can adjust the evaporator heat transfer area of ??the condenser section to adjust the heat pipe wall temperature, so as to avoid the maximum heat pipe corrosion area.