Techno-economic analysis of a hybrid energy system for CCHP and hydrogen production based on solar energy
Techno-economic analysis of a hybrid energy system for CCHP and hydrogen production based on solar energy
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DOI：
10.1016/j.ijhydene.2021.08.134
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发表时间：
2021-09
影响因子：
7.2
通讯作者：
Yujia Song;H. Mu;Nan Li;Xunpeng Shi;Xunwen Zhao;Chaonan Chen;Hongye Wang
中科院分区：
文献类型：
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作者：
Yujia Song;H. Mu;Nan Li;Xunpeng Shi;Xunwen Zhao;Chaonan Chen;Hongye Wang
东北中国的一个典型问题是，由于光伏发电停电现象严重，出现了大量过剩电力。为了有效地利用过剩的光伏发电，本文提出了一种利用过剩电能生产氢气的混合能源系统。它结合了太阳能、制氢系统和冷热电联产(CCHP)系统，实现了制冷、供热、发电和制氢。该系统为辽宁省大连市中国三座公共建筑提供能源，通过优化得到单位能耗成本最低的系统配置(0.0615美元/千瓦时)。使用两种比较策略从单位能源成本、年度总成本、化石能源消耗和二氧化碳排放四个方面对混合能源系统进行评估。随后对优化后的系统进行了年总供能、典型日负荷和成本分析。综上所述，该系统在小面积公共建筑中是可行的，为解决光伏发电断电现象提供了解决方案。
A typical problem in Northeast China is that a large amount of surplus electricity has arisen owing to the serious photovoltaic power curtailment phenomenon. To effectively utilize the excess photovoltaic power, a hybrid energy system is proposed that uses surplus electricity to produce hydrogen in this paper. It combines solar energy, hydrogen production system, and Combined Cooling Heating and Power (CCHP) system to realize cooling, heating, power, and hydrogen generation. The system supplies energy for three public buildings in Dalian City, Liaoning Province, China, and the system configuration with the lowest unit energy cost (0.0615$/kWh) was obtained via optimization. Two comparison strategies were used to evaluate the hybrid energy system in terms of unit energy cost, annual total cost, fossil energy consumption, and carbon dioxide emissions. Subsequently, the annual total energy supply, typical daily loads, and cost of the optimized system were analyzed. In conclusion, the system is feasible for small area public buildings, and provides a solution to solve the phenomenon of photovoltaic power curtailment.