Fire-tube Boiler - BWR
2Pages

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Catalog excerpts

Fire-tube Boiler - BWR - 1

The BWR boilers are equipped with systems which optimise the efficiency up to 95%with economisers, capable of reaching 97 % with additional water-water and/or water-air exchangers. These results are obtained due to the optimised matching of the firing equipment and the boiler shell, designed and produced by BABCOCKWANSON. Efficiency is stable as a result of a well-controlled excess air curve, due tothe geometry of the burner head and electronic cam modulation. BWR boilers bene- fits from the innovative Ecosteam > developments reaching more than 97% of efficiencyand integrating the improvement of the thermal exchange in the boiler and the low level of exhaust gases (NOx, CO The water-tube gas transfer chamberenables the furnace tube to be centred. The longitudinal stresses on the tube plates are therefore symmetrical.The expansion of the tubes is evenlydistributed over the whole diameter of the boiler. The active circulation in the water tubes ensures continuous cooling of the walls, regardless of the operating conditions and steaming rates. > 2 ΅) as well as very low heat losses from the boiler skin. > PACK without ECONOMISER with ECONOMISERwith ECOSTEAM Efficiency % 7525507510080859010095 The absence of refractory (apart from theburner throat and the rear inspection cover) is a significant advantage in terms of maintenance and down-time and helpsprovide very high on-line availabilityfurther reducing operating costs. > Non contractual values Steam load % The technology of the water-tube chamber provides quicker load recovery following heavy steam demand fluctuations and coldstarts. >

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