Research on planning optimization of integrated energy system considering sewage heat reuse

Yongli Wang, Huanran Dong, Wenhui Guo, Yinuo Wang, Xiaoli Liu and Yang Ma

Energy, 2025, vol. 332, issue C

Abstract: Under the requirements of China's clean energy development, the integrated energy system will face the pressure of increasing energy consumption and reducing carbon emission. In order to improve the overall operation efficiency, this paper focuses on analyzing the energy efficiency improvement method of IES based on urban sewage heat reuse, and proposes an urban integrated energy system supply system with sewage source heat pump. Firstly, the physical efficiency model of sewage source heat pump considering fouling treatment is established, secondly, with the goal of the lowest economic cost and carbon emissions, the urban integrated energy system planning optimization model considering the physical constraints of cooling and heating of sewage source heat pump is established, and finally, energy and sewage data of a certain city are selected for validation in an improved multi-energy system of IEEE 24-node distribution system and 8-point heat pipe network coupling. The results show that the total planning cost of the urban integrated energy system planning optimization model including sewage reuse is reduced by 24.57 % in the planning cycle, and the carbon emission is reduced by 10.39 %, which effectively realizes the economic and low-carbon transformation of the system.

Keywords: Sewage reuse; Sewage source heat pump; Integrated energy systems; Planning optimization (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:332:y:2025:i:c:s0360544225027896

DOI: 10.1016/j.energy.2025.137147

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