How do heat exchangers work? - Explain that Stuff
Heat exchangers used to minimize heat losses from buildings, engines, and machines are sometimes called recuperators or regenerators. These are two quite different things. A recuperator is typically used to capture heat that would otherwise be lost, for example, as stuffy air is ventilated from a building: cold, incoming fluid is channeled in the opposite direction to warm, outgoing fluid to minimize the heat loss.
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