Compound steam engine

An animation of a double-acting inverted triple-expansion marine engine.High-pressure steam (red) enters from the boiler and passes through the engine, exhausting as low-pressure steam (blue) to the condenser.

The Coldharbour Mill Pollit and Wigzell cross-compound engine, which drives the rope race seen in the background, transmitting power to line shafts on all five levels of the mill.

A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure (HP) cylinder, then having given up heat and losing pressure, it exhausts directly into one or more larger volume low-pressure (LP) cylinders. Multiple-expansion engines employ additional cylinders, of progressively lower pressure, to extract further energy from the steam.

单词	Double expansion
释义	Double expansion 原声例句经济学人（汇总） Earlier data suggested the American economy grew at an annualised rate of 2.8% in the second quarter, double the 1.4% expansion in the first quarter. 早期数据显示，美国经济在第二季度以2.8%的年化增长率增长，是第一季度1.4%增长率的两倍。英语百科 Compound steam engine A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure (HP) cylinder, then having given up heat and losing pressure, it exhausts directly into one or more larger volume low-pressure (LP) cylinders. Multiple-expansion engines employ additional cylinders, of progressively lower pressure, to extract further energy from the steam.
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Double expansion

Compound steam engine