the ratio of the work done by a heat engine to the energy supplied to it
Compare efficiency
thermal efficiency in American English
noun
Thermodynamics
the ratio of the work output of a heat engine to the heat input expressed in the same units of energy
Word origin
[1905–10]This word is first recorded in the period 1905–10. Other words that entered Englishat around the same time include: aspect ratio, cadre, persona, revolving door, thiamine
Examples of 'thermal efficiency' in a sentence
thermal efficiency
In terms of thermal efficiency and water costs, this can be substantially optimised.
The Star (South Africa) (2005)
Make sure your bifolds meet the latest strict building regulations for thermal efficiency.
Times, Sunday Times (2014)
Wide ones also mean less obstruction, giving you a better view, and greater thermal efficiency.
Times, Sunday Times (2014)
Condensation on the outside is actually a sign of thermal efficiency, as it means heat is not getting out of your home.
Times, Sunday Times (2014)
His constructions often perch on steep, challenging sites, yet they maximise the available space and light while delivering a high level of thermal efficiency.
Times, Sunday Times (2017)
Easier maintenance, thermal efficiency and, in turn, lower running costs are among the other benefits of modern construction.