working fluid


: a fluid working substance

Examples of working fluid in a Sentence

Recent Examples on the Web Water is used as a working fluid in this closed system (water is not lost). Ian Palmer, Forbes, 19 May 2022 The annual operating cost is low, and the working fluid is water rather than battery chemicals. Andrew Blakers, The Conversation, 19 Jan. 2022 But the biggest leap here is using carbon dioxide rather than steam as the working fluid. David Roberts, Vox, 1 June 2018 Sunlight is used to heat up a working fluid at the mirrors' focus. John Timmer, Ars Technica, 19 Oct. 2018 In some plants, sunlight is directed toward a large central thermal tower that heats up quickly and boils a working fluid inside. Megan Geuss, Ars Technica, 28 Oct. 2017 It is then stored at 566 degrees Celsius (1,050 degrees Fahrenheit) and used to transfer heat through a heat exchanger to a working fluid that spins a conventional turbine, generating electricity. Megan Geuss, Ars Technica, 13 Oct. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'working fluid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of working fluid was in 1878

Dictionary Entries Near working fluid

Cite this Entry

“Working fluid.” Dictionary, Merriam-Webster, Accessed 14 Apr. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!