Thermal Performance Analysis of an Underground Closed Chamber with Human Body Heat Sources under Natural Convection
Journal article
Zhang, Z., Day, R., Wang, K., Wu, H. and Yuan, Y. (2018). Thermal Performance Analysis of an Underground Closed Chamber with Human Body Heat Sources under Natural Convection. Applied Thermal Engineering. 145 (145), pp. 453-463. https://doi.org/10.1016/j.applthermaleng.2018.09.068
Authors | Zhang, Z., Day, R., Wang, K., Wu, H. and Yuan, Y. |
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Abstract | In this article, a combined experimental and numerical study has been performed to investigate the thermal performance of a mine refuge chamber (MRC) under natural convection. In the current study, a 20-hour heating experiment is carried out in a fifty-person MRC laboratory and the heat lamps are utilized to simulate the human heat loss. A new analytical model is proposed to predict the air temperature and validated against the experimental data. Sensitivity analysis is performed to further investigate the effects of the thermal parameters of the rock. Results indicated that: (1) two different air temperature increase stages, rapid and slow increase stages, are observed in the MRC; (2) A new analytical method for predicting the air temperature in MRC under natural convection is proposed, it shows that the air temperature increasing trend becomes slow with the increase of the thermal conductivity, density and specific heat capacity of the rock; (3) the surface heat transfer coefficient on the vertical walls reaches the largest and it increases linearly with air temperature. |
Year | 2018 |
Journal | Applied Thermal Engineering |
Journal citation | 145 (145), pp. 453-463 |
Publisher | Elsevier |
ISSN | 1359-4311 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.applthermaleng.2018.09.068 |
Publication dates | |
Online | 21 Sep 2018 |
Publication process dates | |
Accepted | 15 Sep 2018 |
Deposited | 24 Jan 2024 |
Accepted author manuscript | License File Access Level Open |
https://openresearch.lsbu.ac.uk/item/962x8
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