FAHRENHEIT - Is a temperature scale named after the German physicist Gabriel Fahrenheit (1686-1736), who proposed it in 1724. In this scale, the freezing point of water is 32 degrees Fahrenheit (written "32 ℉"), and the boiling point is 212 degrees, placing the boiling and melting points of water 180 degrees apart. To convert Fahrenheit to Celsius, subtract 32, multiply by 5, and divide the product by 9. For example: 100 degrees Fahrenheit – 32=68; 68x5=340; 340/9=37.77 degrees Celsius.
FEDERAL EMERGENCY MANAGEMENT AGENCY (FEMA) - The federal agency in charge of disaster recovery in locations that have been declared disaster areas by a state's Governor and the President of the United States.
FEDERAL ENERGY REGULATORY COMMISSION (FERC) - An independent regulatory commission within the U.S. Department of Energy that has jurisdiction over energy producers that sell or transport fuels for resale in interstate commerce; the authority to set oil and gas pipeline transportation rates and to set the value of oil and gas pipelines for ratemaking purposes; and regulates wholesale electric rates and hydroelectric plant licenses.
FENESTRATION - In simplest terms, windows or glass doors. Technically fenestration is described as any transparent or translucent material plus any sash, frame, mullion or divider. This includes windows, sliding glass doors, French doors, skylights, curtain walls and garden windows.
FISSION - A release of energy caused by the splitting of an atom's nucleus. This is the energy process used in conventional nuclear power plants to make the heat needed to run steam electric turbines.
FLUORESCENT LAMP - A tubular electric lamp coated on its inner surface with a phosphor and contains mercury vapor whose bombardment by electrons from the cathode provides ultraviolet light, causing the phosphor to emit visible light either of a selected color or closely approximating daylight.
FLUOROCARBON GASES - Propellants used in aerosol products and refrigerants that are believed to be causing depletion of the earth's ozone shield. See CFCs.
FRAMING EFFECTS - The effect of framing (wood or metal studs, joists, beams, etc.) on the overall U-value of a wall, roof, floor, window or other building surface. Framing generally increases the U-Value and decreases the R-Value of insulated surfaces.
FUEL CELL - A device or an electrochemical engine with no moving parts that converts the chemical energy of a fuel, such as hydrogen, and an oxidant, such as oxygen, directly into electricity. The principal components of a fuel cell are catalytically activated electrodes for the fuel (anode) and the oxidant (cathode) and an electrolyte to conduct ions between the two electrodes, thus producing electricity.
FUEL ROD (Nuclear) - A long slender tube that holds fissionable material (fuel) for nuclear reactor use. Fuel rods are assembled into bundles called fuel elements or assemblies, which are loaded individually into the reactor core.
FUEL SECURITY - See ENERGY SECURITY.
FUSION ENERGY - A power source, now under development, based on the release of energy that occurs when atoms are combined under the most extreme heat and pressure. It is the energy process of the sun and the stars.
FULL COMPOSITE STORAGE - Storage tank produced entirely from composite materials. Presently, the market introduction of full composite compressed gas storages takes place.