fan efficiency
111Naturally aspirated engine — A naturally aspirated engine is one common type of reciprocating piston internal combustion engine that depends solely on atmospheric pressure to counter the partial vacuum in the induction tract to draw in combustion air. This is in contrast to… …
112Quantum dot solar cell — Spin cast quantum dot solar cell built by the Sargent Group at the University of Toronto. The metal disks on the front surface are the electrical connections to the layers below. Quantum dot solar cells are an emerging field in solar cell… …
113Bypass ratio — The term bypass ratio (BPR) relates to the design of turbofan engines, commonly used in aviation. It is defined as the ratio between the mass flow rate of air drawn in by the fan but bypassing the engine core to the mass flow rate passing through …
114Minimum energy performance standard — MEPS (Minimum Energy Performance Standard) is a specification containing a number of performance requirements for an energy using device, and that effectively limits the maximum amount of energy that may be consumed by a product in performing a… …
115Sukhadeo Thorat — Infobox Person name = Prof. Sukhadeo Thorat caption = birth date = birth place = Maharashtra, India death date = death place = nationality = n field = Economics work institution =University Grants Commission (2006 ) alma mater = Jawaharlal Nehru… …
116materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …
117cooling system — Apparatus used to keep the temperature of a structure or device from exceeding limits imposed by needs of safety and efficiency. In a mechanical transmission, the oil loses its lubricating capacity if overheated; in a hydraulic coupling or… …
118gas-turbine engine — Introduction any internal combustion engine employing a gas as the working fluid used to turn a turbine. The term also is conventionally used to describe a complete internal combustion engine consisting of at least a compressor, a… …
119Concentrated photovoltaics — Concentrated photovoltaic (CPV) technology uses optics such as lenses to concentrate a large amount of sunlight onto a small area of solar photovoltaic materials to generate electricity. Unlike traditional, more conventional flat panel systems,… …
120Loudspeaker — For other uses, see Loudspeaker (disambiguation). An inexpensive, low fidelity 3½ inch speaker, typically found in small radios …
