Proceedings of the International Conference on Industrial Design and Environmental Engineering, IDEE 2023, November 24–26, 2023, Zhengzhou, China

Research Article

Research on the Thermal Properties of Urban Native Sewage Based on Regression Model

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  • @INPROCEEDINGS{10.4108/eai.24-11-2023.2343430,
        author={Shuwen  Ding and Lin  Zhang and Liang  Liu and Xiaotong  Ren and Junze  Du},
        title={Research on the Thermal Properties of Urban Native  Sewage Based on Regression Model},
        proceedings={Proceedings of the International Conference on Industrial Design and Environmental Engineering, IDEE 2023, November 24--26, 2023, Zhengzhou, China},
        publisher={EAI},
        proceedings_a={IDEE},
        year={2024},
        month={2},
        keywords={sewage thermal physical properties regression model clean energy},
        doi={10.4108/eai.24-11-2023.2343430}
    }
    
  • Shuwen Ding
    Lin Zhang
    Liang Liu
    Xiaotong Ren
    Junze Du
    Year: 2024
    Research on the Thermal Properties of Urban Native Sewage Based on Regression Model
    IDEE
    EAI
    DOI: 10.4108/eai.24-11-2023.2343430
Shuwen Ding1,*, Lin Zhang1, Liang Liu1, Xiaotong Ren1, Junze Du1
  • 1: Shenyang Jianzhu University
*Contact email: 1307034384@qq.com

Abstract

At this stage, due to the lack of research on the basic thermophysical parameters of urban primary sewage, the change of thermophysical state of sewage cannot be well grasped, resulting in a low utilization rate of low-grade thermal energy of primary sewage. In this paper, a regression model is established based on the existing data to analyze the changes of basic thermophysical parameters such as density, thermal conductivity, constant pressure specific heat and other basic thermal properties of residential and industrial sewage at different sewage temperatures. Through model analysis, it is found that the density of residential sewage is significantly lower than that of industry. The sewage density of both types of sewage reached a maximum of about 10°C at a sewage temperature, and then showed a decreasing trend again. The thermal conductivity of residential sewage is lower than that of industrial sewage, and the thermal conductivity of sewage gradually increases with the increase of sewage temperature; From the analysis of constant pressure specific heat of sewage, the specific heat of residential sewage is greater than that of industrial type, and the specific heat of sewage decreases with the increase of temperature, and the change range is small.