Thermodynamic analysis of an existing coal-fired power plant for district heating/cooling application
详细信息 查看全文
- 作者：Hasan Huseyin Erdem ; Ahmet Dagdas ; Suleyman Hakan Sevilgen ; Burhanettin Cetin ; Ali Volkan Akkaya ; Bahri Sahin ; Ismail Teke ; Cengiz Gungor ; Selcuk Atas
- 关键词：Power plant modification ; Cogeneration ; Exergy ; Energy ; Waste heat
- 刊名：Applied Thermal Engineering
- 出版年：2010
- 出版时间：February 2010
- 年：2010
- 卷：30
- 期：2-3
- 页码：181-187
- 全文大小：806 K
文摘
In a conventional coal-fired power plant, which is only designed for electricity generation, 2/3 of fuel energy is wasted through stack gases and cooling water of condensers. This waste energy could be recovered by trigeneration; modifying the plants in order to meet district heating/cooling demand of their locations. In this paper, thermodynamical analysis of trigeneration conversion of a public coal-fired power plant, which is designed only for electricity generation, has been carried out. Waste heat potentials and other heat extraction capabilities have been evaluated. Best effective steam extraction point for district heating/cooling system; have been identified by conducting energetic and exergetic performance analyses. Analyses results revealed that the low-pressure turbine inlet stage is the most convenient point for steam extraction for the plant analyzed.