heat engine

n (General Physics) an engine that converts heat energy into mechanical energy

heat′ en`gine

n. a mechanical device designed to transform part of the heat entering it into work. [1890–95]

Thesaurus

Noun

heat engine - any engine that makes use of heat to do workengine - motor that converts thermal energy to mechanical workexternal-combustion engine - a heat engine in which ignition occurs outside the chamber (cylinder or turbine) in which heat is converted to mechanical energyinternal-combustion engine, ICE - a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine

Heat Engine

heat engine

[′hēt ‚en·jən] (mechanical engineering) A machine that converts heat into work (mechanical energy). (thermodynamics) A thermodynamic system which undergoes a cyclic process during which a positive amount of work is done by the system; some heat flows into the system and a smaller amount flows out in each cycle.

Heat Engine

an engine in which thermal energy is converted into mechanical work. Heat engines, which make up the largest group among prime movers, use natural energy sources in the form of chemical or nuclear fuel.

The basis of operation of a heat engine is a closed or arbitrarily closed thermodynamic cycle. The operating efficiency of an ideal heat engine is determined by its thermal efficiency. The operation of a real heat engine, which has additional losses—for example, heat losses and losses caused by friction and vortex formation—is evaluated by the actual efficiency, which is the ratio of the mechanical work at the output shaft of the engine to the heat energy supplied. The actual efficiency of heat engines ranges from 0.1 to 0.6.

Heat engines are divided into piston, rotary, and jet heat engines according to the type of machine carrying out the working thermodynamic process. Combinations of these types, such as turbojet and Wankel engines, are possible. According to the means of heating the working body, heat engines are subdivided into internal-combustion engines, in which both the combustion of fuel and conversion of heat into mechanical work occur in the same working chambers of the engine (the cylinders), and external-combustion engines, in which the working body is obtained or heated outside the engine proper in special devices (for example, the Stirling engine and the steam engine).

O. N. EMIN

heat engine

heat engine

heat engine

heat′ en`gine

Heat Engine

heat engine

Heat Engine

heat engine

Words related to heat engine

noun any engine that makes use of heat to do work

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