5. Heat recovery from the condenser of a refrigeration machine
Heat from the condenser of a refrigeration machine may or may not be directly usable, depending on the temperature level at which it is available. This depends on the type of application.
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For simple space heating, or floor heating in warehouses, the usual condensation temperatures of between 30°C and 45°C are sufficient, and there is generally no need to raise the temperature of the rejected heat if vented finned tube condensers are used. The air to be heated then passes directly through these condensers. The refrigeration cycle is not (or only slightly) affected by heat recovery from the condenser, except during cold periods.
ExampleThis technique can be used for winter heating of a supermarket's storerooms (or dry stores) using the heat generated by the store's refrigeration...
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Heat recovery from the condenser of a refrigeration machine
Cycles with zeotropic refrigerant mixtures
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