摘要
热电联产是节能降耗的有效途径。本文基于单耗分析阐述了一般化供热系统的理论框架,结合热电联产系统热力学分析指出当前常规热电联产抽汽供热模式的不合理之处。在此基础上进行热电联产常规抽汽供热模式和循环水直供直连供热模式的对比分析。利用流程模拟软件构建出300 MW热电联产机组热力系统模型,并对该模型进行了变工况计算,分析汽轮机背压变化对机组发电功率的影响。结果表明:对于300 MW热电联产机组,循环水直供模式比传统抽凝供热模式在电厂侧发电功率增加近31 MW,收效显著,该供热模式节能潜力极大。
Combined heat and power （CHP） is an effective way of energy conservation. Based on specific consumption analysis method, the theory of general heating system was expounded, and the irrational aspects of the current mode of extraction condensing heating was pointed out, combined with thermM dynamic analysis. And the differences of the extraction condensing heating mode and the mode of heating with circulating water were analyze after which the thermal system model of a 300 MW CHP unit was established using ASPEN PLUS software, and the off-design calculation was carried out when the back pressure changes. The results show that the power output of the CHP unit could be increased by more than 10%, which was 31MW, when using the mode of heating with circulating water compared to extraction condensing heating mode, which was a huge improvement. The work of this paper could provide a date basis and a new thinking for the extended energy conservation research for CHP system.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2013年第8期1411-1415,共5页
Journal of Engineering Thermophysics
基金
国家重点基础研究发展计划项目(973项目)(No.2009CB 219801)
国家杰出青年科学基金(No.51025624)
国际科技合作计划项目(No.2010DFA72760-609)
关键词
热电联产
一般化供热系统
ASPEN
PLUS
变工况
节能
combined heat and power （CHP）
generalized heating system
ASPEN PLUS
variableworking condition
energy conservation
