The Design of Solar Thermal Storage System Used to Improve the Ramp Rate of Coal-fired Units

Chao-yang LIU, Pei-hong WANG, Gang ZHAO, Ming ZHAO, Jun-yu LIANG, Meng-yang LI

Abstract


Contrapose the poor ramp rate performance of coal-fired unit, some units even hard to meet with the requirements of gird, put forward an integration solution of trough type solar collectors with heat storage ability paralleled with regenerative system. Based on the performance test of LS-2 solar collectors and taking a 600 MW subcritical unit’s 75%THA operation condition as a benchmark to analyze. The results show that in the load increasing process, through the replacement of the 8th heater’s extraction steam with heated working fluid, can increase the power about 16.46 MW, thus can greatly improve the power response rate of the unit.

Keywords


Coal-Fired Unit; Rise Load Rate; Trough Type Solar Energy; Heat Utilization


DOI
10.12783/dtmse/msce2016/10525

Refbacks

  • There are currently no refbacks.