compact heat exchangers design

GROUP MEMBERSSABA MUSHTAQ 06-CHEM-02FARIHA ASGHAR 06-CHEM-16SHAZIA MANZOOR 06-CHEM-38engineering-resource.com

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Compact Heat ExchangerA type of heat exchanger which is specifically designed to realize the larger heat transfer area per unit volume. A heat exchanger with >700m2/m3 is classified as being compact heat exchanger, e.g.

Car radiator(1000m2/m3)Gas ceramic gas turbine heat exchanger(6000m2/m3)Human lung(20,000m2/m3)



Characteristics of Compact Heat ExchangerLarge extended surfaces.High >700m2/m3(200ft2/ft3)Small hydraulic diameter.Usually at least one of the fluid is gas.Fluid must be clean.



Types of Compact Heat ExchangersTubular heat exchangerFin-plate heat exchangerTube-fin heat exchangerPlate-frame heat exchangerRegenerative heat exchangerengineering-resource.com


Tubular heat exchanger:-Flow pattern: cross flowFluids: Gas-liquidConstruction:engineering-resource.com


Tube-fin heat exchanger:-Flow pattern: cross flow, counter flowFluids:Gas-liquidConstruction

Spiral HE Longitudnal HEengineering-resource.com


Regenerative heat exchanger:-Flow pattern: Alternative flow patternFluids: Gas-GasConstruction: A matrixengineering-resource.com


Plate-frame heat exchanger:-Flow pattern: Counter flowFluids: Liquid-liquidconstructionengineering-resource.com


PLATE-FRAME HEAT EXCHANGERengineering-resource.com


Parts of Plate-Frame Heat Exchanger:-Fixed framePlatesGasketPressure plateCarrier barsengineering-resource.com


Material of construction:engineering-resource.com

Parts 1)Plates 2)Gasket 3)Frames 4)Nozzles 5)Tie bolts Material Stainless steelStyrene butadiene rubber Carbon steelStainless steel,titaniumCr,Mo low alloy steel


Flow arrangement:-engineering-resource.com


ADVANTAGES:High performance heat exchanger plates.Very high heat transfer coefficients due to best utilization of surfaces. Compact and low price solutions. Easy installation and maintenance. Flexibility to add/remove plates for higher/lower capacity requirements. Much less space than shell & tube exchanger.engineering-resource.com


APPLICATION AREAS:

In car radiators.Tank heating for various processes in industry. Applications in chemical, pharma-ceutical and food processing systems. Exchange and recovery of heat in industrial plants. Heating and production of hot domestic water from solar panels. Pasteurization of beverages.Air conditioning systems.Cooling of industrial oils, cooling circuit of machinary. engineering-resource.com


COMPARANCE WITH SHELL TUBE HEAT EXCHANGER:They occupy 80% less space as compared shell and tube heat exchanger.Overall Heat transfer coefficient is three or four times higher as compared to shall and tube heat exchanger.Low pressure and low temperature devices.engineering-resource.com


LIMITATIONS:Max. Design Pressure: 25 Bar Max. Design Temperature: 200C

It is only used for clean fluids.engineering-resource.com


compact heat exchangers design

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