steam gas boiler with economiser - ZBG Boiler
Economizer - Wikipedia. 2019-8-18 183; The first successful economizer design 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.It consisted of an array of vertical cast iron tubes connected to a tank of water above and below, between which the boiler's exhaust
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