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Optimization of 4th generation distributed district heating system: Design and planning of combined heat and power
Renewable Energy ( IF 8.7 ) Pub Date : 2019-01-01 , DOI: 10.1016/j.renene.2018.06.068
Mohammad Sameti , Fariborz Haghighat

Abstract This study applies a mathematical programming procedure to model the optimal design and planning of a new district which satisfies two features of the 4th generation district heating systems: energy reciprocity and on-site generation. The aim of the computational model is to investigate the effect of energy reciprocity (energy exchange among the buildings) as well as to find the best way to select the equipment among various candidates (capacities), the pipeline network among the buildings, and their electrical connections. The objective function includes the annualized overall capital and operation costs for the district along with the benefits of selling electricity to the grid. The distributed energy supply consists of heating, cooling, and power networks, several CHP technologies, solar array, chillers, and auxiliary boilers. The performance of the model for poly-generation was evaluated for designing the new part of Suurstoffi district situated in Risch Rotkreuz, Switzerland with seven residential and office complexes under four different scenarios. Allowing heat exchange among the buildings leads to 25% reduction in total annualized cost and 5% reduction in emission compared to the conventional districts. Removing the network and installation of PV and CHPs results in 9% reduction in emission and 11% reduction in cost. Simultaneous heat and electricity exchange results in a higher reduction in total annualized cost equal to 40% of the base scenario.

中文翻译:

第四代分布式区域供热系统优化:热电联产设计与规划

摘要 本研究应用数学规划程序对新区域的优化设计和规划进行建模,该区域满足第四代区域供热系统的两个特征:能源互惠和现场发电。计算模型的目的是研究能量互惠(建筑物之间的能量交换)的影响,并找到在各种候选(容量)、建筑物之间的管网及其电气中选择设备的最佳方法。连接。目标函数包括该地区的年度总资本和运营成本以及向电网出售电力的收益。分布式能源供应包括供暖、制冷和电力网络、多种 CHP 技术、太阳能电池阵列、冷却器和辅助锅炉。在设计位于瑞士 Risch Rotkreuz 的 Suurstoffi 区的新部分时,评估了多发电模型的性能,在四种不同的场景下有七个住宅和办公综合体。与传统区域相比,允许建筑物之间进行热交换可使年度总成本降低 25%,排放量减少 5%。拆除网络并安装光伏和热电联产可减少 9% 的排放量和 11% 的成本。同时进行热电交换导致年化总成本的降低幅度更大,相当于基本情景的 40%。与传统区域相比,允许建筑物之间进行热交换可使年度总成本降低 25%,排放量减少 5%。拆除网络并安装光伏和热电联产可减少 9% 的排放量和 11% 的成本。同时进行热电交换导致年化总成本的降低幅度更大,相当于基本情景的 40%。与传统区域相比,允许建筑物之间进行热交换可使年度总成本降低 25%,排放量减少 5%。拆除网络并安装光伏和热电联产可减少 9% 的排放量和 11% 的成本。同时进行热电交换导致年化总成本的降低幅度更大,相当于基本情景的 40%。
更新日期:2019-01-01
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