Superheater

superheater
a bank of steel tubes placed in the path of the exhaust gases from the furnace; the waste heat in the gases is utilised to heat up the dry saturated steam flowing through the tubes at constant presssure to obtain superheated steam
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furnace
combustion chamber of a boiler into which fuel is injected for burning
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forced draught
combustion air for boiler furnace supplied under pressure from a forced draught fan

normalising a heat treatment process similar to annealing except that the metal cools more quickly to increase the strength, toughness and hardness; the metal is allowed to cool in still air rather than in the furnace
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Scotch boiler a large diameter cylindrical boiler with three or four furnaces connected at the back end to form a combustion chamber; combustion gases coming from the individual furnace into the chamber then passes through smoke tubes to the funnel uptake; the boiler water immerses the furnaces, chambers and tubes; suitable for comparatively low pressure operation around 15 bar; for higher pressure application, water tube boiler is used; sometimes known as smoke tube boiler

superheater a bank of steel tubes placed in the path of the exhaust gases from the furnace; the waste heat in the gases is utilised to heat up the dry saturated steam flowing through the tubes at constant presssure to obtain superheated steam