Heat pumps operate by moving heat from lower temperature areas to higher temperature areas. They typically take advantage of an electrically driven compressor and a closed vapor compression cycle.

Innovations in heat pump technology, especially using transcritical CO₂ cycles, enable high-temperature water delivery up to ...

A heat pump functions as a typical air conditioning system in the cooling mode — absorbing heat from indoors and rejecting it outdoors. In heating mode, the coils reverse their functions. The outdoor ...

Researchers in Hong Kong have developed a hybrid-energy heat pump that seamlessly combines absorption and compression cycles using crystallization-free ionic liquids, improving efficiency and ...

Researchers say that cascaded organic Rankine cycle systems could improve the way in which environmentally-friendly power is generated from waste heat. A team from City, University of London's ...