A recent study has uncovered significant opportunities for year-round energy savings on CO2 refrigeration systems through the ...

This type of thermal energy storage, also known as ice batteries, is being added to buildings in the U.S. for its ability to provide cool air without releasing planet-warming emissions.

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 ...