U-value applies the factor of time to the heat-loss measurement. U-values measure heat that escapes per hour through a window. Windows typically have two U-values: one for the glass and one for the window, including the frame.
A method of land disposal in which liquid wastes are injected into known geological formations, generally at great depths.Search the Web for Underground Injection
All oils requiring further refinery processing, except those requiring only mechanical blending. Includes naphtha and lighter oils, kerosene and light gas oils, heavy gas oils, and residuum.Search the Web for Unfinished Oils
A territory with one or more features present throughout and absent or unimportant elsewhere.Search the Web for Uniform Region
The ability to increase a product’s performance or features without replacing the product.Search the Web for Upgradeable Product
Search the Web for Urban Heat Island