Flue gas Wikipedia. 2018-11-17 · Flue gas is the gas exiting to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator.

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Condensing boiler - Wikipedia. Condensing boilers are water heaters fueled by gas or oil. They achieve high efficiency (typically greater than 90% on the higher heating value) by condensing water vapour in the exhaust gases and so recovering its latent heat of vaporisation,

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When condensing steam is used as a heating medium, it is common practice to use an approximate heat-transfer coefficient on the heating side for design purposes. Typically, a value of 1500 Btu/h · ft 2 · °F(8500 W/m 2 · K) is used. This value is referred to the external tube surface and includes a fouling allowance. Thus, for steam condensing inside plain tubes we have:

gas condensing water tube steam boiler zg boiler. 2019-3-22 · gas condensing water tube steam boiler. March 22, 2019 zgzhangning no responses. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam..

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