external efficiency
81Brayton cycle — Thermodynamics …
82United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …
83Economics — This article is about the social science. For other uses, see Economics (disambiguation). For a topical guide to this subject, see Outline of economics. Economics …
84Solar cell — A solar cell made from a monocrystalline silicon wafer …
85Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …
86Fuel economy in automobiles — Fuel consumption monitor from a 2006 Honda Airwave …
87Water supply and sanitation in Mexico — While many Mexican water supply and sanitation service providers rank among the best in Latin America, in general, the Mexican water and sanitation sector is characterized by the following issues (i) poor technical and commercial efficiency of… …
88energy conversion — ▪ technology Introduction the transformation of energy from forms provided by nature to forms that can be used by humans. Over the centuries a wide array of devices and systems has been developed for this purpose. Some of these energy …
89Compressed-air energy storage — (CAES) refers to the compression of airto be used later as energy source. At utility scale, it can be stored during periods of low energy demand (off peak), for use in meeting periods of higher demand (peak load). Alternatively it can be used to… …
90Combined cycle — Thermodynamics …
