A device that releases pressure within a radiator when the pressure inside exceeds the operating limits of the vent.

A statement of the electric rate(s), terms, and conditions for electricity sale or supply.

The ratio of a photovoltaic cell's actual power to its power if both current and voltage were at their maxima. A key characteristic in evaluating cell performance.

The processes that a work input/output system undergoes and in which the initial and final states are identical.

The amount of heat produced from the complete combustion of a unit of fuel. The higher (or gross) heating value is that when all products of combustion are cooled to the pre-combustion temperature, water vapor formed during combustion is condensed, and ne ...

A room heat delivery (or exchanger) component of a hydronic (hot water or steam) heating system; hot water or steam is delivered to it by natural convection or by a pump from a boiler.

A type of heat pump that uses the ground, ground water, or ponds as a heat source and heat sink, rather than outside air. Ground or water temperatures are more constant and are warmer in winter and cooler in summer than air temperatures. Geothermal heat p ...

A furnace/combustion chamber in which finely ground fuel is blown in spirals in the combustion chamber to maximize combustion efficiency.

Both a noun and a verb to describe the exterior surface of building elements (walls, floors, ceilings, etc.) and furniture, and the process of applying it.

The rate of flow of the wind undisturbed by obstacles.

The energy developed through the use of heat energy.

A refined petroleum product suitable for use as a fuel in internal combustion engines.

To exceed the design capacity of a device.

The change in heat content that occurs with a change in phase and without change in temperature.

The standard method for calculating residential cooling loads developed by the Air-Conditioning and Refrigeration Institute (ARI) and the Air Conditioning Contractors of America (ACCA) based largely on the American Society of Heating, Refrigeration, and A ...

The structural elements (walls, roof, floor, foundation) of a building that encloses conditioned space; the building shell.

A type of window glass that contains special tints that cause the window to absorb as much as 45% of incoming solar energy, to reduce heat gain in an interior space. Part of the absorbed heat will continue to be passed through the window by conduction and ...

This is an independent regulatory agency within the U.S. DOE that has jurisdiction over interstate electricity sales, wholesale electric rates, natural gas pricing, oil pipeline rates, and gas pipeline certification. It also licenses and inspects private, ...

A wood or gas burning heating appliance that fits into the opening or protrudes on to the hearth of a conventional fireplace.

The maximum instantaneous wind speed (or velocity) that occurs within a specific period of time or interval.