船用增压锅炉热平衡计算

符号说明Q1-有效利用的热量/kJ·kg-1;Q2-排烟带走热量/kJ·kg-1;Q3-燃料化学未完全燃烧损失热量/kJ·kg-1;Q4-机械未完全燃烧损失热量/kJ·kg-1;Q5-锅炉散热损失热量/kJ·kg-1;Q增-增压机组损失热量/kJ·kg-1;Q低-燃料发热量/kJ·kg-1;Q气-热空气带入热量/kJ·kg-1;Q汽-燃料雾

Heat Balance Calculation of a Turbo-charged Marine Boiler

Heat balance calculation is a basis for the thermodynamic performance calculation of turbo-charged marine boilers.As the turbo-charger unit participates in the thermodynamic process of the boiler,there may result a more complicated heat balance calculation of the turbo-charged marine boiler.A sectionalized calculation method is proposed for the heat balance calculation of the turbo-charged boiler along with an analysis and exploratory study of the direct heat-balance and sectionalized heat-balance calculation method.A general heat-loss formula applicable to the variable load calculation of the turbo-charged boiler is presented. A calculation formula of available heat quantity for fuel used to do work in an auxiliary steam turbine is given and a calculation and analysis of specific cases also performed.The sectionalized heat-balance calculation results are relatively satisfactory,thus providing a guide for the performance calculation and analysis of the turbo-charged marine boilers.