What are Heat Pipes/Heat Exchangers?

Sr no Content 1What is Heat Pipe 2Introduction 3Working Principle 4Working of Maniks Heat Pipe 5Why Maniks? 6Heat Pipes in Various Industries 7Heat Pipe Applications 9 Thanks You

 Hollow cylinder filled with a vaporizable liquid under vacuum. The Heat Pipe functions as follows  Heat is absorbed in the evaporating section.  Fluid boils to vapour phase.  Heat is released from the upper part of cylinder to the environment; vapour condenses to liquid phase.  Liquid returns by gravity to the lower part of cylinder (evaporating section).  When heat is added to the evaporator section, the working fluid boils and converts into vapor absorbing latent heat.

 Heat pipes are Heat transfer devices. They are Hollow cylindrical pipes, filled with a small/little amount of working fluid that evaporates to produce heat. This heat then rejected from another end for its application on various industrial processes.  A heat pipe is a closed evaporator-condenser cylindrical system sealed under vacuum with a small amount of working fluid. During non-operation, the working fluid contained inside the wick structure lines the inner diameter of the heat pipe.  At the destination end, known as the condenser, the heat given up by working fluid is rejected to an external heat sink. The fluid then returns via wick structure and passively pumps the fluid back to the heat source using capillary force.

The working of a heat pipe is base on the principles of Thermal Conductivity and Phase Transfer.heat pipe Basically heat pipe is a closed tube with an internal wick material and small amount of working fluid of which one end situated is in the heat generation. Heat transfer is done by high thermal conductivity and dissipation is done to desired location by using the phenomena known as “capillary action”.

 Maniks heat pipe is constructed with a wick or capillary structure, a working fluid and a vacuum sealed tube  When one end of the heat pipe is heated temperature of the liquid inside the heat pipe will also increases gradually and after large temperature increase it vaporizes.  The transfer of heat through heat pipe takes place very quickly with very less temperature drop over a long distance.  exchangers.html exchangers.html

 Maniks is a traditional supplier of electromechanical devices since last three decades. They have proven their prominence for contribution in heat pipes repeatedly.  Heat pipes have lot many advantageous points over the conventional thermal pipes they are as follows  High Thermal Conductivity (10,000 to 100,000 W/m K)  Reliable  Passive operation  Low Cost  Shock/Vibration tolerant  Freeze/thaw tolerant

 Electronics and Electrical devices cooling: Heat pipes are used to cool transistors and high density semiconductors by extraction of heat from these devices.  Heat Exchangers: Power industries use heat pipe heat exchangers as air heaters on boilers.  Aerospace applications: Heat pipes have also proven in aerospace applications that transmit thermal energy at rates millions.  Other applications: Production, medicine and human body temperature control, engines and automotive industry etc.

 Apart from above applications heat pipes have been used in the following areas  Waste Heat Recovery from Air Conditioners  Heat Pipe Air Preheaters for Boilers  Waste Heat Boilers to Recovery Heat  Heat Recovery at the Kiln Furnace  Spray Drying

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