By comparison, a power plant's heat engine delivering high-grade heat at 800 °C would have a maximum theoretical limit of 73% for converting heat into useful work (and thus would be forced to divest as little as 27% in waste heat to the cold temperature reservoir at 20 °C).
Usporedbom, toplinski motori u eletrani isporukom visokokvalitetne topline pri 800 °C će imati najveće teoretsko ogranicenje od 73% za pretvorbu topline u koristan rad (prema tome bit će prisiljeni odbaciti 27% topline koja se gubi do spremnika na 20 °C).