热力发电Issue(4)：17-21,5.DOI:10.3969/j.issn.1002-3364.2015.04.017
200 MW高背压循环水供热机组热力特性研究
Thermodynamic characteristics of a 200 MW unit with high back pressure circulating water heating
江浩 1黄嘉驷 1王浩1
作者信息
- 1. 西安热工研究院有限公司，陕西 西安 710032
- 折叠
摘要
Abstract
After retrofitting on high back pressure circulating water heating for a 200 MW unit,thermodynamic cal-culation was performed.The results show that,the heat net circulating water quantity and steam extraction amount (for heat supply)has little effects unit parameters such as heat consumption rate,unit output,heat load and circu-lating water outlet temperature.Under each working condition,the fuel utilization coefficient can reach about 90%, implying the energy comprehensive utilization effect is great.However,the unit back pressure is greatly affected by the heat net circulating water quantity and steam extraction amount.Moreover,the unit's operation regulating flexi-bility got poor and the retrofitting work capacity is pretty huge.The rotor changing time must be carefully selected after the retrofitting,and the units with very small heat load are not suitable for transformation.Due to small out-put of the 200 MW unit's low pressure (LP)cylinder,it suggests that the LP cylinder be split to reduce the modifi-cation range and simplify the steps.关键词
200 MW机组/高背压/循环水/供热系统/热力特性/燃料利用系数/热耗率Key words
200 MW unit/high back pressure/circulating water/heat supply system/thermodynamic performance/fuel utilization coefficient/heat consumption rate分类
能源科技引用本文复制引用
江浩,黄嘉驷,王浩..200 MW高背压循环水供热机组热力特性研究[J].热力发电,2015,(4):17-21,5.
