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Once heated, the air then indirectly heats the incoming ventilation via a heat exchanger.

Some of the steam generated by the kettles is captured by a heat exchanger, which allows the brewer to use this waste heat in the next batch of brewing.

Calhoun said 787 deliveries are being held up due to shortages of both airline seats and a part called the heat exchanger in the jet engine.

Geothermal systems bring heat from underground using piped fluids, then use a heat exchanger to transfer it to a building’s ventilation system.

Binary power plants create energy through a heat exchanger “with no emissions whatsoever of geothermal fluid or gases,” he said.