分散用火建筑热探测器响应温度数值模拟研究

doi:10.16265/j.cnki.issn1003-3033.2018.03.010

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (3): 56-61.doi: 10.16265/j.cnki.issn1003-3033.2018.03.010

分散用火建筑热探测器响应温度数值模拟研究

田水承^1,2 教授, 张成镇^1,2

1 西安科技大学安全科学与工程学院, 陕西西安 710054;
2 西安科技大学教育部西部矿山开采及灾害治理重点实验室, 陕西西安 710054

收稿日期:2017-12-15 修回日期:2018-02-05 出版日期:2018-03-28 发布日期:2020-11-09
作者简介:田水承 (1964—),男,山东淄博人,博士,教授,博士生导师,主要从事安全应急管理方面的研究。E-mail:1255398120@qq.com。张成镇 (1992—),男,江西九江人,硕士研究生,研究方向为建筑消防、安全应急管理。E-mail:1848173964@qq.com。

Numerical simulation study on response temperature of temperature detectors for building using decentralized fire

TIAN Shuicheng^1,2, ZHANG Chengzhen^1,2

1 College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an Shaanxi 710054, China;
2 Key Laboratory of Western Mines and Hazard Prevention, Ministry of Education of China, Xi'an Shaanxi 710054, China

Received:2017-12-15 Revised:2018-02-05 Online:2018-03-28 Published:2020-11-09

摘要/Abstract

摘要： 为合理选择、设置分散用火建筑物天花板内的热探测器,确定其测量响应温度数值,采用PyroSim软件建立分散用火建筑模型;在模型天花板平面内布置一系列用于测量温度的热电偶,在热释放速率(HRR)为1、5、10、20、30 kW/m²,天花板高度为3、5、7m的条件下分别进行15次数值模拟,并处理、分析、拟合模拟数据;最后,考虑室内全年最高温度及安全温度,提出分散用火建筑物内热探测器报警温度的计算公式。研究表明:分散用火建筑物天花板平面内温度分布均匀,温度与HRR有显著的二次函数关系;温度随高度的增加而降低,相同天花板高度差下HRR越小,温度变化幅度也越小。

关键词: 分散用火, 热释放速率(HRR), 热探测器, 响应温度, Pyrosim软件, 数值模拟

Abstract: The paper was aimed at finding out the value of the temperature response of the temperature detector fixed on the ceiling of a building using decentralized fire, and providing a reference for the selection and setting of the temperature detector in a building using decentralized fire. A model of the building using decentralized fire was created by PyroSim software. 15 numerical simulations were carried out at the HRR of 1, 5, 10, 20, 30 kW/m² and the ceiling height of 3, 5, 7 m, the data monitored by the thermocouples in the model are processed, analyzed and fitted. Finally, after considering the maximum temperature in a building and the safety temperature, a formula was worked out for calculating the alarm temperature for the detector in decentralized fire building. The results show that there is a uniform temperature distribution in the ceiling plane of a building using decentralized fire, and there is a obvious quadratic function relation between the temperature and the HRR, that there is a negative correlation between the temperature in the ceiling plane and the ceiling height, and that the temperature variation decreases with the decrease of the HRR at the same height difference.

Key words: decentralized fire, heat release rate(HRR), temperature detector, temperature response, PyroSim software, numerical simulation

中图分类号:

X932

田水承, 张成镇. 分散用火建筑热探测器响应温度数值模拟研究[J]. 中国安全科学学报, 2018, 28(3): 56-61.

TIAN Shuicheng, ZHANG Chengzhen. Numerical simulation study on response temperature of temperature detectors for building using decentralized fire[J]. China Safety Science Journal, 2018, 28(3): 56-61.

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分散用火建筑热探测器响应温度数值模拟研究

Numerical simulation study on response temperature of temperature detectors for building using decentralized fire

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