
2012年第10期(总第178期)
doi:10.3969/j.issn.1009 3230.2012.10.008
应用能源技术
热泵回收电广循环水余热模型运行
方式的经济性分析丁常富,崔可,邵汉昆,郝宗凯,蔡志成
(华北电力大学能源动力与机械工程学院,河北保定071003)
摘要:在热电联产机组中,汽轮机乏汽的热量被排放到环境中,致使机组冷源损失较大,机组热效率难以提升,并且会造成环境的热污染,为了回收大量循环冷却水余热,本文以某电厂 N200/CC144=12.75/535/535/0.981/0.245型机组为例,利用热泵技术回收电厂循环冷却水余热,建立余热回收物理模型和数学模型,与原系统进行对比分析,结果表明该模型提高了系统的经济性;并选定不同的工作参数对模型进行计算分析,择选出较为经济的工作参数,为以后余热回收工作提供了一些参考。
关键词:热泵;循环水余热;余热回收模型;经济性分析
文献标志码:A文章编号:1009-3230(2012)10-0031-04
中图分类号:TK11+5
EconomicAnalysisontheRunModeofHeatPumpRecycling
Plant Circulating Water WasteHeat Model DING Chang-fu, CUI Ke, BING Han-kun, HAO Zong-kai
31
(School of Energy Power and Mechanical Engineering, North China Electric Power University
Baoding071003,China)
Abstract: :In the cogeneration unit,exhaust heat of steam turbine is released into the environment, resulting in great loss of the cold sources, thermal pollution and difficult to improve thermal efficiency
CC144 -12.75/535/535/0.981/0.245unit as an example, using of heat pump technology, Intends to recycle the circulating water waste heat, physical and mathematical models of the waste heat recovery model were established, compared with he original system and the results show that? the model improves the thermal economy of the system; selected different working parameters on the unit for analysis and calculation, and select a more economical working parameters, for the later work provides some reference for waste heat recovery.
Key words: Heat pump; Circulating water heat; Waste heat recovery model; Themal economic a. nalysis
0引言
电力工业为了实现“十一五”能源消耗和主要污染物排放总量控制目标实施上大压小、节能减排”的能源政策,积极鼓励建设大容量、高参
收稿日期:20120815修订日期:2012-08-30 作者简介:崔可(1988-),女,华北电力大学能源与动力工
程学院硕士研究生,研究方向为发电厂系统及设备优化设计与优化运行。
万方数据
数抽凝式热电机组。但是,这一类热电联产机组为保证安全运行必须通过冷却塔向热电厂周围环境排放大量低温余热,该余热数量巨大,可占到机组额定供热量的30%以上[1-6]。以北京市的现状为例,接人市政大热网的四大主力热电厂白白排放的循环水余热量达1000MW以上,如配备相应容量的调峰热源,则可增加供热面积4000~