Heat Pipe :

A Heat Pipe is a self-contained passive energy recovery device. A heat pipe can transfer up to 1000 times more thermal energy, than copper, the best known conductor. One of the amazing features of the heat pipes is that they have no moving parts and hence require minimum maintenance. They are completely silent and reversible in operation and require no external energy other than the thermal energy they transfer. Heat pipes are ruggedly built and can withstand a lot of abuse.

What is Heat Pipe:

A traditional heat pipe is a hollow pipe under vacuum filled with a vaporizable liquid. The Heat Pipe functions are as follows:

A - Latent heat of Evaporation is absorbed in the evaporating section.

B - The fluid boils to the vapor phase.

C - The vapor releases latent heat of condensation to the environment from the upper part (Condenser Section) of the pipe and condenses.

D - Condensed 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.

After reaching the condenser section, due to partial pressure build up, the vapor transforms back into liquid thus releasing latent heat. From the condenser section, heat is taken away by means of water cooling / air cooling with fins etc. The liquid condensate returns to the original position through the capillary return mechanism, completing the cycle. Due to very high latent heat of vaporization a large quantity of heat can be transferred.

Heat Pipe Heat Exchangers

Hot Gas to Air Heat Pipe Heat Exchangers

Typical finned Hot Gas to air Heat pipe heat exchangers comprise of number of tubular gravity assisted finned Heat Pipes arranged in staggered pitch, depending upon the application. One of the advantages of the Heat Pipe Heat Exchanger is its ability to operate without cross contamination between he two streams. Use of Gravity Assisted Heat Pipe compiles orientation evaporator above condenser for the Heat Pipe Heat Exchanger.

Hot Gas to Liquid Heat Pipe Heat Exchangers

This heat exchanger resembles Air to Air unit, only difference is liquid/water tank is provided at the condensation section to preheat liquid/water.

Manor heat pipe heat exchanger can recover up to 85% of exhausted thermal energy. However under ideal conditions the thermal efficiency of an economic system ranges between 55 to 70% and saves millions of BTUs year after year.

Manor heat pipe heat exchangers as standard are suitable for air-to-air heat recovery for a temperature range of -10°C to +260°C. With special materials of construction for the tube, the exchanger can be designed to extend the range to 427°C to 482°C.

Segment wise Applications of Heat Pipe Heat Exchangers

• Annealing furnaces

• Bakery Oven

• Boiler Brick Kiln

• Chemical fluid bed dryer

• Dehumidifier

• Epoxy coating curing Oven

• Foundry hot blast

• Fume scrubber

• Heater flue gas

• Heat treatment furnace

• Humber dryer

• Plastic laminate dryer

• Print dryer

• Reverberatory furnace

• Solvent boil off oven

• Spray dryer

• Textile cloth finishing oven

• Tanter frame textile drying oven

• Tumble dryer

• Veneer dryer etc.