APPLIANCES AND EQUIPMENT

Air-to-water heat pump for hot water

Heat pump is a machine that would extract heat energy from a relatively cool medium (the heat source) and transfer it to a relatively hot medium (the heat sink) to make the cool medium cooler and the hot medium hotter. This is comparable to a machine producing two effects, one for heating and the other for cooling.

Moreover, heat pump is an energy efficient machine to provide heating and cooling in many applications. Normally, for one unit of electrical energy supplied to the heat pump, it would produce more than one unit of heating energy as well as more than one unit of cooling energy.

This is far more efficient than other heating processes which normally produce less than one unit of heating energy due to efficiency losses. The efficiency of heat pump will be superb in applications where both heating and cooling are required simultaneously so that heating energy and cooling energy from the heat pump could be fully utilized.

Air-to-water Heat Pump for Hot-water system

Air-to-water heat pumps for hot-water system are those which extract heat energy from ambient air (the heat source) and reject it to water media (the heat sink). This type is quite common as cool air and hot water so produced are more versatile in applications. For instance, an air-to-water heat pump installed for housing residences can provide cooling to occupants as well as hot water.

A schematic diagram of heat pump hot water system