Economizer n. : One who, or that which, economizes.

Economizer n. : Specifically: (Steam Boilers) An arrangement of pipes for heating feed water by waste heat in the gases passing to the chimney.

Example:


Taxonomy
economizers, economizer, boiler, heat, design, boiler feedwater, Powerplants, enthalpy, free encyclopedia, steam, water-side, the cooling, Stirling engine, History, energy costs, fluid, portion, efficiency.

Defination from the web:
economizer was used to increase the steam-raising efficiency of the boilers of stationary steam engines. It was patented by Edward Green in 1845, and since then has been known as Green's economizer. ... Retrieved from "http://en.wikipedia.org/wiki/Economizer" ...