余よ熱ねつ

noun

residual heat; waste heat

Refers to heat that remains after a process or is released as a byproduct. Used in technical, engineering, and everyday contexts.

• エンジンを止とめた後あとも、しばらくは余よ熱ねつで暖あたたかい。

  Even after turning off the engine, it stays warm for a while from residual heat.

• 工こう場じょうでは余よ熱ねつを利り用ようして発はつ電でんしている。

  The factory uses waste heat to generate electricity.