0 past simple and past participle of preheat --
1 to heat an oven to a particular temperature before putting food in it: --
The fuel was used to cool rear roller bearing, which also preheated the fuel.
As the gases pass through the kiln circuit, they gradually cool as they transfer heat to the brick as it is preheated and dried.
The incoming crude oil is preheated by exchanging heat with some of the hot, distilled fractions and other streams.
When the gas stream is preheated by some means where burner combustion gases do not enter the dryer, the dryer known as an indirect-heated type.
Unlike some of the other processes we find that the materials are usually preheated and measured before molding.
The resulting liquid-gas mixture is preheated by flowing through a heat exchanger.
The preheated feedwater is fed at full boiler pressure into the main boiler via clack valves.
Figs. 2 and 3 clearly show that the shock wave propagates in a preheated medium.
