
1) Economiser 2) Energy conversion 3) Saver
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https://www.crosswordclues.com/clue/economizer

1) Economiser 2) Stinter
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https://www.crosswordclues.com/clue/economizer

Economizers (US and Oxford spelling), or economisers (UK), are mechanical devices intended to reduce energy consumption, or to perform useful function such as preheating a fluid. The term economizer is used for other purposes as well. Boiler, power plant, heating, ventilating, and air conditioning (HVAC) uses are discussed in this article. In simp...
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http://en.wikipedia.org/wiki/Economizer

• (n.) One who, or that which, economizes. • (n.) Specifically: (Steam Boilers) An arrangement of pipes for heating feed water by waste heat in the gases passing to the chimney.
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http://thinkexist.com/dictionary/meaning/economizer/

A heat exchanger for recovering heat from flue gases for heating water or air.
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http://www.daviddarling.info/encyclopedia/E/AE_economizer.html
E·con'o·mi`zer noun 1. One who, or that which, economizes.
2. Specifically:
(Steam Boilers) An arrangement of pipes for heating feed water by waste heat in the gases passing to the chimney.
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http://www.encyclo.co.uk/webster/E/7

[
n] - a frugal person who limits spending and avoids waste
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http://www.webdictionary.co.uk/definition.php?query=economizer

A specially designed bank of boiler tubes used to heat the boiler feed water before it enters the boiler drum. Boiler exhaust gases pass across the economizers which are located in the exhaust ductwork and the heat is transferred to the feed water. Preheating of the feed water helps to reduce boiler fuel requirements.
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https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/
economiser noun a frugal person who limits spending and avoids waste
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https://www.encyclo.co.uk/local/20974

A heat exchanger for recovering heat from flue gases for heating water or air.
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https://www.encyclo.co.uk/local/22819
No exact match found.