Economic Analysis of Low Temperature Economizer System in Ultra-Supercritical Units
The economic analysis of the low temperature economizer system of a typical 660 MW ultra-su-percritical coal-fired power generation unit is carried out by using the equivalent enthalpy drop theory.The results show that the coal consumption for unit power supply can be reduced by 1.55 g/(kW·h)under ra-ted conditions.For upgrades or modifications that cause minor changes in the thermal system,the equiva-lent enthalpy drop theory is a simple,fast and highly accurate method.Combined with thermal characteris-tic tests,it can quickly and efficiently study and calculate the operating characteristics and energy-saving indicators of equipment under various thermal conditions.And the results provide guidance for economic operation as well as energy saving and carbon reduction of the unit.
coal-fired power generation unitlow temperature economizerequivalent enthalpy dropheat of flue gas
万方数据
维普
