煤火热能TPCT提取正交试验设计与极差分析*

doi:10.16265/j.cnki.issn1003-3033.2021.09.019

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (9): 135-141.doi: 10.16265/j.cnki.issn1003-3033.2021.09.019

煤火热能TPCT提取正交试验设计与极差分析^*

钟凯琪¹, 肖旸^**1,2 教授, 芦星^1,2, 邓军^1,2 教授

1 西安科技大学安全科学与工程学院,陕西西安 710054;
2 陕西省煤火灾害防治重点实验室,陕西西安 710054

收稿日期:2021-06-20 修回日期:2021-08-17 出版日期:2021-09-28 发布日期:2022-03-28
通讯作者: ** 肖旸(1979—),男,贵州湄潭人,博士,教授,博士生导师,主要从事煤火灾害机制及其防治技术研究。E-mail:xiaoy@xust.edu.cn。
作者简介:钟凯琪 (1998—),女,四川绵竹人,硕士研究生,研究方向为煤火热能提取。E-mail: 19220089039@stu.xust.edu.cn。
基金资助:
国家自然科学基金资助(51974233)。

Orthogonal experiment design and range analysis of TPCT extracting thermal energy from coal fire

ZHONG Kaiqi¹, XIAO Yang^1,2, LU Xing^1,2,DENG Jun^1,2

1 College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an Shaanxi 710054, China;
2 Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an Shaanxi 710054, China

Received:2021-06-20 Revised:2021-08-17 Online:2021-09-28 Published:2022-03-28

摘要/Abstract

摘要： 为探究纳米氧化铜(CuO)工质浓度、插入深度、倾角等3个主要因素对煤火热能提取性能的影响,各选取3个水平组成L9正交试验,在煤体温度为100 ℃时,开展两相闭式热虹吸管(TPCT)煤火热能提取试验。对试验结果进行极差分析可得:试验条件下,影响TPCT煤火热能提取的影响因素排序依次为倾角>纳米CuO工质浓度>插入深度,并确定出纳米CuO工质质量分数为5%,插入深度为40 cm,倾角为90°的最优方案。根据此方案进行重复性试验,发现在该方案下的试验最大降温率达38.62%,优于9组正交试验结果。基于上述试验与分析,确定出TPCT在煤火热能提取时的最佳因素水平,获得在该因素水平下对应的最佳提取效果。

关键词: 两相闭式热虹吸管(TPCT), 煤火, 热能提取, 正交试验, 极差分析

Abstract: In order to investigate influence of three main factors, such as concentration of CuO working medium, insertion depth and inclination angle, on the extraction performance of coal thermal energy. Three levels were selected to form L9 orthogonal test, extraction test of coal thermal energy by TPCT was carried out when temperature of coal body was 100 ℃. According to range analysis of test results, it can be concluded that under test conditions, order of influencing factors affecting extraction of TPCT coal thermal energy is inclination > concentration of nano-CuO working fluid> insertion depth. The optimal scheme is determined with mass fraction of nano-CuO as 5%, insertion depth as 40 cm and inclination angle as 90°. According to repeatability test of this scheme, it is found that the maximum cooling rate under this scheme is 38.62%, which is better than results of 9 groups of orthogonal tests. Based on above tests and analysis, the optimal factor level of TPCT in the extraction of coal fire heat energy is determined, and the optimal extraction effect is obtained under factor level.

Key words: two-phase closed thermosyphon (TPCT), coal fire, thermal extraction, orthogonal experiment, range analysis

中图分类号:

X932
TD75

钟凯琪, 肖旸, 芦星, 邓军. 煤火热能TPCT提取正交试验设计与极差分析^*[J]. 中国安全科学学报, 2021, 31(9): 135-141.

ZHONG Kaiqi, XIAO Yang, LU Xing,DENG Jun. Orthogonal experiment design and range analysis of TPCT extracting thermal energy from coal fire[J]. China Safety Science Journal, 2021, 31(9): 135-141.

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煤火热能TPCT提取正交试验设计与极差分析^*

Orthogonal experiment design and range analysis of TPCT extracting thermal energy from coal fire

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