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Article | REF: BE9732 V1

Theory of refrigerating machines - Mechanical compression machines. Multistage cycles

Authors: Maxime DUMINIL, Jean-Pierre DOMBLIDES

Publication date: April 10, 2013, Review date: October 16, 2019 | Lire en français

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    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.

    • 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.

      Example

      This 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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