Open AccessOperation Characteristic Analysis and Parameter Optimization of District Heating Network with Double Heat Sources
Author(s) -
Jun Zhao,
Ying Li,
Jingyi Li,
Zhi Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/772/1/012077
Subject(s) - heat pipe , interval (graph theory) , multi objective optimization , mathematical optimization , computer science , topsis , pareto principle , engineering , mathematics , thermodynamics , heat transfer , operations research , physics , combinatorics
The heating system is a practical engineering problem with multi-parameter coupling and multi-constraint restrictions. The use of optimization algorithms has guiding significance for its high efficiency and energy saving. This paper takes the district heating pipe network with dual heat sources as an example to analyze the operation characteristics of the heating pipe network and optimize its parameters. The thermodynamic model of the dual-heat source district heating pipe network is established, and the NSGA-II algorithm is applied to analyze the operating characteristics. By comparing the upper and lower limits of the interval and the interval when the pipe length and pipe diameter are the decision variables, it is believed that to reduce the loss during the operation phase of the system, quantity adjustment should be avoided as much as possible. The water supply temperature is greater than 95°C, the greater the system fluctuation. Through the NSGA-II algorithm, the Pareto front is obtained, and the TOPSIS optimization method is used to finally obtain the best operating parameters of the pipe network with the best closeness.