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