基于区域能源网络的微型热电联产系统性能分析
1. 重庆大学, 能源与动力工程学院, 重庆 400030
2. 重庆市特种设备检测研究院, 重庆 401121
| 摘 要： | 为了解决微型热电联产系统（micro-Combined Heat and Power, m-CHP）与用户负荷之间供需不平衡的问题，基于内燃机驱动的m-CHP构建了能源共享的区域能源网络。以哈尔滨地区住宅典型周的电、热负荷为例，评估了“以热定电”和“以电定热”两种运行方式下m-CHP系统的能源和经济性能。结果表明，相比于“以电定热”，采用“以热定电”的运行方式，购买能源的支出降低了10%，而出售能源得到的收益为前者的2.7倍，运行费用低于前者。与传统的热电分产供能方式相比，“以电定热”和“以热定电”两种运行方式下m-CHP系统的净支出节约率分别为13.68%和38.83%。基于能源网络运行的m-CHP相较传统热电分产系统具有经济优势。 |
| 关 键 词： | 微型热电联产; 以电定热; 以热定电; 区域能源网络; 建筑负荷 |
| DOI： | 10.57237/j.jest.2023.01.004 |
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收稿日期: 2022-09-09
接受日期: 2023-03-10
在线出版日期: 2023-03-28
Performance of Residential Micro-CHP Operating in a District Energy Network
1. School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China
2. Chongqing Special Equipment Testing Research Institute, Chongqing 401121, China
| Abstract: | To resolve the problem of the imbalance between micro-Combined Heat and Power (m-CHP) supply and demand, a district energy network has been established based on residential m-CHP units powered by natural gas-fueled internal combustion engine. The electric and thermal loads of a Harbin residential building in a typical winter heating week are calculated. The performance of the m-CHP systems operating in two operation strategies, i.e., Following the Electric Load (FEL) and Following the Thermal Load (FTL), are analyzed and evaluated from both energy and economic aspects. The result shows that the energy cost of the m-CHP is reduced by 10% when operating in FTL mode, and the income from selling excess energy is 2.7 times more than that in FEL mode, indicating lower operation costs in FEL mode. Moreover, compared with the traditional separate production of electricity and heat, the net cost reduction rate of the system in FEL and FTL mode is 13.68% and 38.83%, respectively. Micro-CHP operating in a district energy network is more profitable than traditional separate electricity and heat production. |
| Keywords: | m-CHP; Following the Electric Load; Following the Thermal Load; District Energy Network; Building Loads |
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