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thermal efficiency

American  

noun

Thermodynamics.
  1. the ratio of the work output of a heat engine to the heat input expressed in the same units of energy.


thermal efficiency British  

noun

  1. the ratio of the work done by a heat engine to the energy supplied to it Compare efficiency

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of thermal efficiency

First recorded in 1905–10

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Water-based cooling systems, especially using mine pools, are ideal for managing heat load due to their thermal efficiency.

From The Wall Street Journal Mar. 8, 2026

Its homes, which can be customized by combining various-sized modules, range from one to four bedrooms and are solar-powered, built to maximize thermal efficiency and indoor air quality.

From Los Angeles Times May 9, 2025

The model showed that thermal trapping achieves the target temperature at lower concentrations with the same performance, or at higher thermal efficiency for equal concentration.

From Science Daily May 15, 2024

F1 engines have a thermal efficiency rating of about 50%, while road-car petrol engines are generally in the region of 30%.

From BBC Jul. 15, 2021

It shows, in addition to indicated thermal efficiency, the brake thermal efficiency and the mechanical efficiency, together with other particulars such as engine dimensions, types and names of experimenters.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various

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