A method and system for simulating and predicting the hydraulic and thermal coupling of a central heating system

By collecting and analyzing data from centralized heating systems, and combining steady-state hydraulic analysis and dynamic thermodynamic calculation methods, the problem of simulating changes in flow rate and return water temperature at heat exchange stations, which was previously unattainable in existing technologies, was solved. This enabled multi-moment hydraulic-thermal coupling prediction, improving the practicality and completeness of the simulation analysis.

CN122133565APending Publication Date: 2026-06-02TIANJIN THERMAL POWER DESIGNING INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN THERMAL POWER DESIGNING INST
Filing Date
2026-04-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing simulation methods for centralized heating systems fail to effectively consider changes in flow rate and return water temperature at heat exchange stations, making it difficult to achieve real-time dynamic prediction capabilities for the pipeline network and lacking the ability to predict the hydraulic-thermal coupling under continuous operation conditions at multiple times.

Method used

By collecting pipeline network parameters, heat source operation data, and heat exchange station operation data, and combining them with outdoor air temperature, an initial simulation condition set is generated, and time-varying boundary conditions are set. Using steady-state hydraulic analysis algorithms and dynamic thermodynamic calculation methods, continuous recursive solutions are obtained for the heat exchange station and pipeline network, generating pipeline flow distribution, temperature distribution, and hydraulic operating parameters.

Benefits of technology

It realizes the hydraulic-thermal coupling prediction of the centralized heating system under continuous operation at multiple times, improves the practicality and completeness of simulation analysis, and can output the flow distribution, temperature distribution and hydraulic operating parameters of the pipeline network.

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Abstract

This invention discloses a hydraulic-thermal coupling prediction simulation method and system for centralized heating systems, relating to the field of urban heating pipe network technology. The method includes setting the heat source supply water temperature, the target load of the heat exchange station, and the outdoor air temperature as time-varying boundary conditions, generating a boundary dataset using an initial simulation condition set; employing a heat exchange station heat exchange state solution method, calculating the primary flow rate and primary return water temperature of the heat exchange station based on the boundary dataset to obtain the dynamic parameters of the heat exchange station; using a steady-state hydraulic analysis algorithm, solving the pipe network hydraulics based on the dynamic parameters of the heat exchange station to generate the pipe segment flow distribution; and based on the pipe segment flow distribution, the primary return water temperature of the heat exchange station, and the heat source supply water temperature, employing a dynamic thermodynamic calculation method to solve for pipe temperature changes, updating the temperature distribution of all network nodes, and iteratively advancing the simulation timeline to generate the pipe network flow distribution, temperature distribution, and hydraulic operating parameters. This invention improves the completeness of hydraulic-thermal coupling prediction and the practicality of simulation analysis.
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