Geothermal heat exchangers almost always use condenser water or glycol as the heat transfer medium — and, sometimes, refrigerant. Wastewater heat recovery systems typically preheat domestic cold water ...

Today’s chillers offer a wealth of opportunities and also pose some challenges for manufacturers, installers, and end users. Chillers can be used as heat pumps to provide efficient heating as well as ...

Researchers at the Miguel Hernández University of Elche in Spain have designed an air-to-water heat pump system that can shift domestic hot water (DHW) production to central daylight hours, thus ...