An electrical device for converting alternating current to direct current. The chamber in a cooling device where water is separated from the working fluid (for example ammonia).

A heat exchanger in which heat is recovered from the products of combustion.

Costs that are repetitive and occur when an organization produces similar goods or services on a continuing basis.

The process of converting materials that are no longer useful as designed or intended into a new product.

The amount (percent) of light that is reflected by a surface relative to the amount that strikes it.

Materials with various qualities that are applied to glass windows before installation. These coatings reduce radiant heat transfer through the window and also reflects outside heat and a portion of the incoming solar energy, thus reducing heat gain. The ...

A window glass that has been coated with a reflective film and is useful in controlling solar heat gain during the summer.

An aluminum foil fabricated insulator with backings applied to provide a series of closed air spaces with highly reflective surfaces.

A material applied to window panes that controls heat gain and loss, reduces glare, minimizes fabric fading, and provides privacy. These films are retrofitted on existing windows.

A type of incandescent lamp with an interior coating of aluminum that reflects light to the front of the bulb. They are designed to spread light over specific areas.

The change in direction of a ray of light when it passes through one media to another with differing optical densities.

The compound (working fluid) used in air conditioners, heat pumps, and refrigerators to transfer heat into or out of an interior space. This fluid boils at a very low temperature enabling it to evaporate and absorb heat.

The process of the absorption of heat from one location and its transfer to another for rejection or recuperation.

A measure of the effective cooling capacity of a refrigerator, expressed in Btu per hour or in tons, where one (1) ton of capacity is equal to the heat required to melt 2,000 pounds of ice in 24 hours or 12,000 Btu per hour.

The complete cycle of stages (evaporation and condensation) of refrigeration or of the refrigerant.

A solid fuel produced by shredding municipal solid waste (MSW). Noncombustible materials such as glass and metals are generally removed prior to making RDF. The residual material is sold as-is or compressed into pellets, bricks, or logs. RDF processing fa ...

A type of cooling system that uses a charging and discharging cycle with a thermal or latent heat storage subsystem.

The process of using heat that is rejected in one part of a cycle for another function or in another part of the cycle.

The replacement of a non-functional or ineffective lamp with a new, more efficient lamp.

A measure of the percent of moisture actually in the air compared with what would be in it if it were fully saturated at that temperature. When the air is fully saturated, its relative humidity is 100 percent.