YANG Yu, XIA Xiaohua, JIANG Jun. Energy loss analysis and optimization on an ultra supercritical 1000MW unit thermal system using echelon cycle[J]. Thermal power generation, 2015, 44(8): 74-78.
YANG Yu, XIA Xiaohua, JIANG Jun. Energy loss analysis and optimization on an ultra supercritical 1000MW unit thermal system using echelon cycle[J]. Thermal power generation, 2015, 44(8): 74-78.DOI:
The energy grade efficiency method was applied to carry out energy loss analysis for thermal system of an ultra supercritical 1 000 MW unit with one reheat under THA condition.The energy loss value of the system under the above condition was obtained and the calculation accuracy of this energy grade efficiency method was verified.Moreover
a thermodynamic optimization method using pattern search was proposed for design of the cylinder pressure and extraction pressure.The result shows that
after the optimization
the heat rate of the echelon cycle thermal system dropped from 7 218.43kJ/(kW·h)to 7 177.22kJ/(kW·h)significantly
on the premise of satisfying the relative requirements from the factories.