Increased cogeneration of renewable electricity through energy cooperation in a Swedish district heating system - A case study
Increased cogeneration of renewable electricity through energy cooperation in a Swedish district heating system - A case study
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DOI：
10.1016/j.renene.2017.10.003
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发表时间：
2018-02
期刊：
影响因子：
8.7
通讯作者：
S. Amiri;G. Weinberger
中科院分区：
文献类型：
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作者：
S. Amiri;G. Weinberger
目前对瑞典基萨市区域供热 (DH) 系统的研究表明，当地能源公司如何通过与附近锯木厂和造纸厂的能源合作，为实现区域供热的节能以及新型生物燃料热电联产 (CHP) 工厂的经济高效利用做出贡献。使用线性程序 MODEST 优化独立和集成能源系统的情况。欧洲电力市场被假定完全解除管制。结果表明，能源公司与这些行业合作生产供暖用热和工业用蒸汽具有明显的优势。合作行业也从热能和/或生物燃料副产品供应中获得优势。使用生物燃料热电联产厂进行联合供热，可实现热电联产近 29 GWh/年，生物燃料使用量增加 13 GWh/年，燃油使用量为零，二氧化碳排放量减少 25,800 吨 CO2/年，而燃煤电厂处于边缘地位，生物燃料作为有限资源。通过扩大合作和可再生电力销售，系统总成本降低了−2.18 MEUR/a。敏感性分析表明，投资生物燃料热电联产厂的盈利能力随着电力和电力证书价格的提高而增加。
The present study of the district heating (DH) system in the city of Kisa, Sweden, shows how, through energy cooperation with a nearby sawmill and paper mill, a local energy company contributes to energy-efficient DH and cost-effective utilization of a new biofuel combined heat and power (CHP) plant. Cases of stand-alone and integrated energy systems are optimized with the linear program MODEST. The European power market is assumed to be fully deregulated. The results show clear advantages for the energy company to cooperate with these industries to produce heat for DH and process steam for industry. The cooperating industries gain advantages from heat and/or biofuel by-product supply as well. The opening to use a biofuel CHP plant for combined heat supply results in cogenerated electricity of almost 29 GWh/a with an increased biofuel use of 13 GWh/a, zero fuel oil use and CO2emission reductions of 25,800 tons CO2/a with coal-condensing power plant on the margin and biofuel as limited resource. The total system cost decreases by −2.18 MEUR/a through extended cooperation and renewable electricity sales. The sensitivity analysis shows that the profitability of investing in a biofuel CHP plant increases with higher electricity and electricity certificate prices.