Preheater definitions

preheater

(solar) A solar heating system that preheats water or air that is then heated more by another heating appliance.
Found on http://www.daviddarling.info/encyclopedia/P/AE_preheater.html

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preheater

installation serving for preliminary heating of the charge
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=841-26-28

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Preheater

is a vessel in which limestone is heated by the exhaust gases from a rotary or other kiln, prior to being fed into the kiln.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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Preheater

(Solar) A solar heating system that preheats water or air that is then heated more by another heating appliance.
Found on https://www.encyclo.co.uk/local/22819

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