多能互补协同蓄能系统热力学分析与运行优化  

Thermodynamic analysis and operation optimization of multi energy complementary energy storage system

作　　者：王宇波 全贞花[1] 靖赫然 王林成[1] 赵耀华[1] WANG Yubo;QUAN Zhenhua;JING Heran;WANG Lincheng;ZHAO Yaohua(Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学绿色建筑环境与节能技术北京市重点实验室,北京100124

出　　处：《化工学报》2021年第5期2474-2483,F0004,共11页CIESC Journal

基　　金：国家自然科学基金项目(52076005)。

摘　　要：提出了一种多能互补协同蓄能建筑供能系统,该系统将空气源热泵、水源热泵、太阳能热电联产组件以及蓄能技术(蓄冷、蓄热)有效结合,实现了可再生能源的高效利用与建筑的经济供能,利用热力学分析方法对该供能系统进行性能分析与运行优化研究。首先,通过能源监控平台收集该供能系统的实际运行数据建立了系统[火用]分析模型,并对冬季典型日工况进行了系统性能分析,结果表明系统运行稳定,其夜间蓄能平均COP和[火用]效率分别为2和32.24%,均高于常规系统。接着,通过分析系统冬季实际运行数据,总结出了各蓄能工况的运行规律,并制定了系统优化运行策略。最后,对该多能互补系统进行了热经济学评价,本系统单位面积供热费用仅为12.5 CNY/m^(2),年单位[火用]成本为2.16 CNY/kWh,且相较于常规空气源热泵直供系统和燃气热水锅炉供暖系统,本系统的动态回收期分别为3.66年和2.47年,经济效益优势明显,是值得推广的供能系统形式。A multi-energy complementary energy supply system combined with energy storage was proposed,which effectively combined air source heat pump,water source heat pump,photovoltaic/thermal and energy storage technology(cold storage and heat storage)to achieve efficient and economic energy supply.The performance analysis and operation optimization of the energy supply system are carried out by using thermodynamic analysis method.First of all,the actual operation data of the energy supply system are collected through the energy monitoring platform,and the system performance is analyzed under the typical daily conditions in winter.The results show that the system is stable and its average COP and exergy efficiency are 2 and 32.24% respectively,which are higher than those of conventional system.Then,by analyzing the actual operating data of the system in winter,the operating rules of each energy storage condition were summarized,and the system optimization operating strategy was formulated.The heating cost per unit area of the system is only 12.5 CNY/m^(2),and the annual unit exergy cost is 2.16 CNY/kWh.In addition,the dynamic payback period of this system is 3.66 a and 2.47 a respectively compared with the conventional air source heat pump direct supply system and gas-fired boiler heating system,which has obvious economic benefits.

关 键 词：多能互补 热力学 再生能源 优化 热泵 热经济学 

分 类 号：TK02[动力工程及工程热物理]