Finned Tube----Heat pipe heat exchanger

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What is a heat pipe heat exchanger

A heat pipe is a heat transfer element having a high thermal conductivity , which is enclosed by the inner tube evaporation and condensation of the working fluid to transfer heat , with a high thermal conductivity, good heat transfer isothermal hot and cold sides of the area can be arbitrarily changed , remote heat , temperature controlled series of advantages.

Heat pipe heat exchanger refer to using heat pipe or finned tube to achieve heat exchange.  There are a number of heat pipes consisting of tubes within the housing constructed by the beam separator is placed , the heat pipe heat exchanger is the use of heat pipe heat exchanger principle to achieve exchange. A number of heat pipes are composed of heat transfer tubes within the housing configured by the beam separator is placed , and the heat pipe is heated in the separator section , cooling section and the corresponding housing bore are formed hot and cold fluid passage , hot and cold fluid passage application ACROSS achieve a continuous flow of heat transfer tubes . Used for waste heat recovery projects.

Heat pipe heat exchanger involved improved heat exchanger structure , especially to improve the structure of the heat exchanger on the flue ; solve previous low flue heat transfer efficiency problems ; the heat pipe heat exchanger is determined by the furnace , set the ash pond walls, partitions, wall panels, tubes , flaps , into the outlet structure, which constitutes a major improvement is set in the lower ash pond , water storage tank installed above the retaining plate ; its advantage is the elimination of direct thermal media phenomenon, so that the heat medium heat evenly , improving heat transfer efficiency , coupled with a set of gray in the lower pool is set to make tubes reduce the deposition of dust and improve the heat transfer efficiency ; the heat pipe heat exchanger can be placed in a wide range of heat flue , especially recycling placed in the furnace flue effect is obvious in the use of waste heat , heat the medium can be warm , you can bath .

What is a heat pipe heat exchanger?

Heat pipe is a heat transfer element having a high thermal conductivity , it is through the closed vacuum evaporation and condensation of the working fluid to transfer heat , with a high thermal conductivity , good isothermal , hot and cold sides of the heat transfer area can be arbitrarily changed , remote heat , temperature controlled series of advantages. ? Heat pipe heat exchanger : the principle is the use of heat pipe heat exchanger for heat exchange to achieve . There are a number of heat pipes consisting of tubes within the housing constructed by the beam separator is placed , the heat pipe heat exchanger is the use of heat pipe heat exchanger principle to achieve exchange. A number of heat pipes are composed of heat transfer tubes within the housing configured by the beam separator is placed , and the heat pipe is heated in the separator section , cooling section and the corresponding housing bore are formed hot and cold fluid passage , hot and cold fluid passage application ACROSS achieve a continuous flow of heat transfer tubes . Used for waste heat recovery projects.

Relates to an improved heat pipe heat exchanger heat exchanger structure , especially to improve the structure of the heat exchanger on the flue ; resolve past flue low heat transfer efficiency problems ; the heat pipe heat exchanger is determined by the furnace , set ash pond walls , partitions, wall panels, tubes , flaps , into the outlet structure, which constitutes a major improvement is set in the lower ash pond , water storage tank installed above the retaining plate ; its advantages DC is to eliminate the phenomenon of heating medium , so that the heat medium heat evenly , improving heat transfer efficiency , coupled with a set of gray in the lower pool is set to make tubes reduce the deposition of dust and improve the heat transfer efficiency ; the heat pipe heat exchanger can placed in a wide range of hot flue , especially placed in the furnace flue effect is obvious in recycling waste heat , heat the medium can be warm, you can bath .

Construction principle of heat pipe heat exchanger : A heat pipe is a highly efficient heat transfer components , the heat capacity than the metal hundreds of times to thousands of times higher . Heat pipe also has a mean temperature characteristics, heat flux adjustable, reversible direction of heat transfer characteristics . Use it not only has the heat exchanger consisting of a large amount of heat pipe inherent temperature difference is small , light weight, small size, rapid thermal response characteristics, but also has easy installation, simple maintenance, long life , low resistance loss , intake and exhaust airflow Road to facilitate the separation, and do not leak and so on. A heat pipe is formed with the inner wall of the channel ends sealed aluminum ( rolled ) and the finned tube by pumping into the cleaning liquid injected into the working fluid from the top of high vacuum , and the proportion of the different components with the injection of liquid refrigerant is divided into KLS low temperature heat pipe heat exchanger , GRSC-A in the hot tube heat exchanger , GRSC-B high temperature heat pipe heat exchanger. One end of the tube when the heat pipe heat vaporized working fluid to absorb heat from the heat of vaporization , the vaporization of the steam flow to the other end and cold condensation latent heat released to the cooling zone . Condensate by capillary action and the gravity return and continue to heat of vaporization , so that a large number of reciprocating cycles to transfer heat from the heating zone to the cooling zone .

Heat pipe heat transfer working fluid through the process of phase transition . The heat pipe element arranged at a certain distance between the ranks , mounted bunched within the framework of the shell , with the middle section of the heating and cooling baffle section of the heat pipe separated form the heat pipe heat exchanger . A heat pipe is by the American invention , was originally used in aerospace technology and nuclear reactors , in order to solve the sunny side and the shady side of uneven heating . 1990s were used for civilian air conditioning , due to its superior thermal conductivity, being more widely appreciated , is widely used in high-tech fields of computer , radar.

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 , running alone in the heat pipes because of wear , corrosion, damage occurs over temperature and other reasons , it is only a single heat pipe failure , rather than hot and cold fluids doping will occur. So heat pipe heat exchanger for Yi Ran , explosive, corrosive , such as heat transfer fluids occasions with high reliability.

b cold heat pipe heat exchanger , the hot fluid is completely separate from the flow , it is easier to achieve cold , completely countercurrent heat exchanger fluid ; while both hot and cold fluid flow in the tube , because the heat transfer coefficient is much higher flow tube heat transfer coefficient in the flow tube , and the heating surface can be employed on both sides of the extended surface . For low -grade heat recovery is very economical.

c. For high dust content of the fluid , heat pipe heat exchanger by heat pipe structure size , extended surface forms to solve the heat exchanger wear ash fouling problems.

d. heat pipe heat exchanger when used with corrosive flue gas 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 greatest heat pipe corroded areas .

Finned tube : To improve heat transfer efficiency, typically in the heat exchanger finned tube by the addition of a surface , increasing the external surface area of the heat exchanger tube (or inner surface ) , so as to improve heat transfer efficiency purposes, such as for finned tube heat pipe called .

Finned tube according to the shape and structure is divided into: square finned tube , spiral finned tubes, longitudinally finned tubes, spiral serrated finned tube, finned tube ;

Finned tube Material is divided into: single metal finned tube , double metal composite finned tube