典型安全事故下区域供热网络动态热性能分析

IF 2.2 4区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Building Performance Simulation Pub Date : 2022-09-03 DOI:10.1080/19401493.2022.2078407

Yong Qiu, Guojun Li, Linyang Wei, Tai Zhang

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引用次数: 0

摘要

提高区域供热网络的安全性能是保证区域供热网络正常运行的关键，这就要求我们在事故发生时及时了解区域供热网络的反馈情况。因此，本文建立了一个热-液耦合的动态数学模型，用于预测DH系统的动力学。研究了发生保温层脱落或供水温度突变等事故时DH网的动态温度和热液耦合传输的时滞。深入分析了两起事故对DH网络的影响。结果表明，该模型适用于DH网络特定条件下的数值模拟。这有助于获取事故条件下DH网络的数据信息，促进DH网络的稳定运行。该方法可以与其他技术相结合，进一步提高性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Dynamic thermal performance of district heating network under typical safety accidents

The key to guarantee district heating (DH) network work normally is to improve its safety performance which requires us to know the feedback of DH network in time when an accident occurs. Therefore, a dynamic mathematical model of coupled thermo-hydraulic for anticipating the dynamics in DH systems is established in this work. The dynamic temperature of the DH network and time delay of the coupled thermohydraulic transmission are investigated when the accident (insulation layer falling off or water supply temperature sudden change) occurs. The effects of two accidents on the DH network are analyzed thoroughly. The results show that the proposed model is suitable for the numerical simulation of specific conditions of the DH network. This is helpful to obtain the data information of the DH network under accident conditions and promote the stable operation of DH network. This method can be combined with other techniques to further improve the performance.

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来源期刊

Journal of Building Performance Simulation CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

5.50

自引率

12.00%

发文量

审稿时长

12 months

期刊介绍： The Journal of Building Performance Simulation (JBPS) aims to make a substantial and lasting contribution to the international building community by supporting our authors and the high-quality, original research they submit. The journal also offers a forum for original review papers and researched case studies We welcome building performance simulation contributions that explore the following topics related to buildings and communities: -Theoretical aspects related to modelling and simulating the physical processes (thermal, air flow, moisture, lighting, acoustics). -Theoretical aspects related to modelling and simulating conventional and innovative energy conversion, storage, distribution, and control systems. -Theoretical aspects related to occupants, weather data, and other boundary conditions. -Methods and algorithms for optimizing the performance of buildings and communities and the systems which service them, including interaction with the electrical grid. -Uncertainty, sensitivity analysis, and calibration. -Methods and algorithms for validating models and for verifying solution methods and tools. -Development and validation of controls-oriented models that are appropriate for model predictive control and/or automated fault detection and diagnostics. -Techniques for educating and training tool users. -Software development techniques and interoperability issues with direct applicability to building performance simulation. -Case studies involving the application of building performance simulation for any stage of the design, construction, commissioning, operation, or management of buildings and the systems which service them are welcomed if they include validation or aspects that make a novel contribution to the knowledge base.