In thermodynamics, a measure of the actual potential of a system to do work.(noun)
In systems energetics, entropy-free energy.(noun)
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Use "exergy" in a sentence
"Some of these forms are based on concepts developed in the energy analysis literature such as exergy or emergy analysis."
"In Thermodynamics, it is called a "Perpetual Motion Machine", one that delivers useful work output, which exceeds the intrinsic value (known as "exergy") of its energy input."
"The study, carried out by Abolfazl Ahmadi and Mehdi Ali Ehyaei of the Department of Mechanical Engineering, at Iran University of Science and Technology-Arak Branch, in Arak, investigated the "exergy" of wind power."