heat exchanger

The latter heat exchanger uses the coolness of the lake water to dissipate heat from the downtown buildings.

Another way the Toronto system saves is by using largely passive heat exchangers, rather than energy-intensive air conditioners and chillers.

When energy is needed, the sand goes through a heat exchanger that then pressurizes gas to power turbomachinery and spin generators that create the electricity.

I removed it and everything was fine, but in a few days I’d have run the pump dry and also destroyed the heat exchanger.