Exergy character

It names the useful work an energy source can still yield.

Engineers use 㶲 in thermodynamics and energy analysis to distinguish recoverable work from the total energy present. Exergy depends on the source and its surroundings; energy quantity alone does not say how much useful work remains.

One account places its coinage in 1957, when engineers at Nanjing Institute of Technology translated “exergy” after a visiting lecture. The idea draws on older maximum-work and available-energy analyses; the English term “exergy” was coined in 1956. These are conceptual predecessors, not earlier names for 㶲. In its 2024 entry, Taiwan’s Ministry of Education notes that 㶲 does not appear in 《說文》, an early Chinese character dictionary.

Is 㶲 an emoji?

No; it is a Han character rendered by a text font.

Its appearance depends on whether the reader’s font contains the character. Taiwan’s CNS record says Windows 10 and later include it in default system fonts, as of 2024; on other systems, it can appear as a box when no installed font contains it.