GU Yaxiu, WANG Shengpeng, YANG Shoumin, et al. Thermal economic analysis on an ultra supercritical unit with second reheat cycle[J]. Thermal power generation, 2013, 42(9): 7-9.
GU Yaxiu, WANG Shengpeng, YANG Shoumin, et al. Thermal economic analysis on an ultra supercritical unit with second reheat cycle[J]. Thermal power generation, 2013, 42(9): 7-9.DOI:
On the basis of keeping the main steam pressure and temperature and reheat steam temperature of the unit with single reheat cycle constant
applying second reheat cycle can reduce the heat consumption rate and enhance the unit efficiency.Taking an ultra supercritical 1 000MW unit with double reheat cycles and steam parameter of 26.25MPa/600℃/600℃/600℃as the example
comparison of the thermal economic indices of unit running with single reheat and double reheat was conducted.The results showed that
under 1 000 MW unit load condition
compared with the turbine running with single reheat
the heat consumption rate of that running with double reheat decreased by 1.26%
about 92kJ/(kW·h)lower;the coal consumption for power supply decreased by 3.47g/(kW·h)and the unit net efficiency increased by 0.57%.