Energy efficiency

Energy efficiency

Industry: Energy

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Energy efficiency

Closed cycle

Energy; Energy efficiency

A system in which a working fluid is used over and over without introduction of new fluid, as in a hydronic heating system or mechanical refrigeration system.

Absorption refrigeration

Energy; Energy efficiency

A system in which a secondary fluid absorbs the refrigerant, releasing heat, then releases the refrigerant and reabsorbs the heat. Ammonia or water is used as the vapour in commercial absorption ...

Energy audit

Energy; Energy efficiency

A survey that shows how much energy you use in your house or apartment. It will help you find ways to use less energy.

Liquid-based solar heating system

Energy; Energy efficiency

A solar heating system that uses a liquid as the heat transfer fluid.

Preheater solar

Energy; Energy efficiency

A solar heating system that preheats water or air that is then heated more by another heating appliance.

Photovoltaic-thermal (PV/T) systems

Energy; Energy efficiency

A solar energy system that produces electricity with a PV module, and collects thermal energy from the module for heating. There are no commercially available systems available (as of 11/97).