摘要
为了提高生物质电厂灵活调节能力,以既有生物质电厂为基础,研究了生物质电厂耦合储能的技术,提出了一种生物质发电与热泵储能耦合的新型储能系统。建立了系统模型和性能评价指标,分析了关键参数对系统性能的影响。研究结果表明,通过提高换热器有效性,提高压缩机和膨胀机的等熵效率等措施可以获得较好的系统性能。以额定功率为12 MW、主蒸汽温度为540℃、给水温度为220℃的生物质电厂为例,建立的生物质-热泵储能系统在压缩机与膨胀机等熵效率为0.88,环境温度为30℃,外部换热器有效性为0.984 6,回热器有效性为0.975 0的条件下,系统性能系数(COP)为1.423,循环效率为50.09%。该研究可以为生物质电厂转型储能业务提供一些技术上的理论依据。
In order to enhance the flexibility of biomass power plants,the technology of existing biomass power plants coupled with energy storage was investigated,and a novel energy storage system coupling biomass power generation with heat pump energy storage was proposed.A model and relevant evaluation indexes were established,and the influence of key parameters on system performance was analyzed.Results indicate that the system with better performance can be obtained by improving the effectiveness of heat exchangers,and improving the isentropic efficiencies of compressors and expanders.Taking a biomass power plant with the rated power of 12 MW,main steam temperature of 540℃,and feedwater temperature of 220℃as a research example,for the established biomass-heat pump energy storage system with the isentropic efficiencies of compressor and expander of 0.88,ambient temperature of 30℃,external heat exchanger effectiveness of 0.9846,and regenerator effectiveness of 0.9750,the coefficient of performance(COP)of system and the cycle efficiency can achieve 1.423 and 50.09%,respectively.This study can provide a theoretical basis for the technological transition of biomass power plants to energy storage operation.
作者
王福锐
何青
李红
WANG Furui;HE Qing;LI Hong(School of Energy,Power and Mechanical Engineering,North China Electricity Power University,Beijing 102206,China)
出处
《动力工程学报》
北大核心
2025年第7期1101-1108,共8页
Journal of Chinese Society of Power Engineering
关键词
生物质电厂
热泵储能
循环效率
敏感性分析
COP
biomass power plant
heat pump energy storage
cycle efficiency
sensitivity analysis
COP
作者简介
王福锐(1999-),男,贵州铜仁人,硕士研究生,研究方向为热泵储能系统。;通信作者:李红,女,副教授,硕导,E-mail:bjlh@ncepu.edu.cn。
