performance energy ratio
21Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …
22Compression ratio — For compression ratio in data compression, see data compression ratio. The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its… …
23Blip-to-scan ratio — In radar systems, the blip to scan ratio, or blip/scan, is the ratio of the number of times a target appears on a radar display to the number of times it could have been seen. [ [http://www.answers.com/topic/blip scan ratio?cat=technology blip… …
24Air-fuel ratio — (AFR) is the mass ratio of air to fuel present during combustion. When all the fuel is combined with all the free oxygen, typically within a vehicle s combustion chamber,the mixture is chemically balanced and this AFR is called the stoichiometric …
25Waist–hip ratio — Measurement of waist hip ratio: In a lean person (left), the waist can be measured at its narrowest point, while for a person with convex waist (right), it may be measured at about one inch[1] above the navel. The hip is measured at its widest… …
26European Union energy label — According to several different EU Directives (92/75/CEE, 94/2/CE, 95/12/CE, 96/89/CE, 2003/66/CE, et alia) most white goods, light bulb packaging and cars must have an EU Energy Label clearly displayed when offered for sale or rent. The energy… …
27High-performance liquid chromatography — An HPLC. From left to right: A pumping device generating a gradient of two different solvents, a steel enforced column and an apparatus for measuring the absorbance. Acronym HPLC Classification Chromatography …
28coefficient of performance — (COP) Ratio of work performed or accomplished as compared to the energy used …
29COP — (Coefficient of Performance) Used to rate the performance of a heat pump, the COP is the ratio of the rate of useful heat output delivered by the complete heat pump unit (exclusive of supplementary heating) to the corresponding rate of energy… …
30Fill Factor — 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 …
