working fluid

noun

, Mechanics.

1. a liquid or gaseous working substance.

Word History and Origins

Origin of working fluid¹

First recorded in 1900–05

Example Sentences

In one very popular form ammonia gas is the "working fluid."

From Project Gutenberg

The constant pressure cycle is so called because heat is added to the working fluid at constant pressure.

From Project Gutenberg

The constant volume cycle is so called because the heat required is added to the working fluid at constant volume.

From Project Gutenberg

At the higher limit of pressure, heat is added while the working fluid expands at a constant pressure.

From Project Gutenberg

A gas engine is a heat engine in which the working fluid is atmospheric air and the fuel an inflammable gas.

From Project Gutenberg