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Keywords Heat exchanger, Pumps, Temperature control
Pump and exchanger forms cooling module
Combining a pump with a heat exchanger forms the basis of a temperature control circuit. A fan blown exchanger normally performs cooling only of a fluid, whereas a liquid to liquid exchanger also offers the possibility of heating, using steam or hot water as the heat source. Occo can now offer both types of module over a wide range of sizes, the second type going by the name "Pumpex".
Pumps of various types are incorporated, e.g. centrifugal or turbine impellers for high flows and low pressure. Alternatively gear and vane pumps will pump at constant flow-rates virtually independent of the system head. Pump materials are chosen to suit all of the familiar fluids: from super-clean deionised water, through glycol, oil/water emulsions, to the various oils, mineral and synthetic...