Research On Energy-loss Analysis Model For Coal-fired Power Unit

Energy-loss analysis is one of the essential basic theoretical works for coal-fired power unit's energy conservation and coal consumption decrease. Therefore, on the basis of first thermodynamic law, the energy-loss analysis models, including terminal temperature difference upside, terminal temperature difference underside and extraction steam pressure loss, were established in this paper. Furthermore, the energy-loss analysis model of regenerative system structure varying was established in this paper, such as splitting heaters. For the limitations of single-factor-varying energy-loss analysis models, according to the actual operating conditions of unit and the circumstances of the operating parameters influencing each other, all-factors-varying energy-loss analysis model based on the overall analysis of unit was established preliminarily. The models discussed in this paper were proved to be possessed of the character of accurate, simple and more universal. Especially, it is suitable for on-line monitoring system of heat economy of unit.