TY - JOUR
T1 - Investigation on temperature control performance of an underground confined space under ventilation
AU - Jin, Ting
AU - Zhang, Zujing
AU - Ge, Liang
AU - Liang, Xing
AU - Wu, Hongwei
AU - Zhou, Jiri
AU - Mao, Ruiyong
N1 - © 2024 Elsevier Ltd. All rights reserved. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1016/j.tsep.2024.102591
PY - 2024/4/23
Y1 - 2024/4/23
N2 - The control of thermal environment in underground structures has always been a subject of great concern. In this paper, the influence of initial surrounding rock temperature (ISRT), ventilation temperature (VT) and ventilation volume (VV), as well as internal heat source intensity (HSI) on the temperature control of ventilation risk in underground closed space is explored by building a 50-person Mine refuge chamber (MRC) model with internal heat source. The model is verified according to the experimental data, and the relative deviation is less than 4.3%. The simulation results show that the indoor temperature (IT) is proportional to the ISRT, HSI and VT, but inversely proportional to the VV. When there are 30 people in the MRC, the ISRT and the initial IT are 32°C, the VT is 20°C, and the VV should exceed 450 m3/h to meet the temperature control requirements of 96h. Taking into account the comfort of personnel, it is recommended that the air volume of 900 m3/h is more appropriate for 30 people.
AB - The control of thermal environment in underground structures has always been a subject of great concern. In this paper, the influence of initial surrounding rock temperature (ISRT), ventilation temperature (VT) and ventilation volume (VV), as well as internal heat source intensity (HSI) on the temperature control of ventilation risk in underground closed space is explored by building a 50-person Mine refuge chamber (MRC) model with internal heat source. The model is verified according to the experimental data, and the relative deviation is less than 4.3%. The simulation results show that the indoor temperature (IT) is proportional to the ISRT, HSI and VT, but inversely proportional to the VV. When there are 30 people in the MRC, the ISRT and the initial IT are 32°C, the VT is 20°C, and the VV should exceed 450 m3/h to meet the temperature control requirements of 96h. Taking into account the comfort of personnel, it is recommended that the air volume of 900 m3/h is more appropriate for 30 people.
U2 - 10.1016/j.tsep.2024.102591
DO - 10.1016/j.tsep.2024.102591
M3 - Article
SN - 2451-9049
VL - 50
SP - 1
EP - 10
JO - Thermal Science and Engineering Progress
JF - Thermal Science and Engineering Progress
M1 - 102591
ER -