For the wall model of a building affected by solar radiation, a one-dimensional transient thermal conduction analysis was conducted. The purpose of the analysis was to examine the effect of wall thickness and heat capacity on heat transfer. On the westward wall in summer, the temperature distribution indoor the wall became parabolic. Even after the evening, the heat flux direction was outdoor from the wall and indoor from the wall, even in the conditions where the sol-air temperature was higher than the indoor temperature. The re-emit of the outside surface continued from evening till the morning of the next day. In the daytime, the heat quantity that entered from the outdoor air into the wall body did not all flow through the room, but a part was re-emitted to the outdoor. Particularly in the case of materials with low thermal conductivity and high volumetric specific heat, the effect of re-emit was remarkable. Regarding the amount of re-emit, the woody material with a large volumetric specific heat and the glass wool with a small volumetric specific heat were compared. It was suggested that the heat capacity could reduce the heat flux.
| Published in | American Journal of Agriculture and Forestry (Volume 6, Issue 4) |
| DOI | 10.11648/j.ajaf.20180604.15 |
| Page(s) | 88-97 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2018. Published by Science Publishing Group |
Heat, Building Wall, Heat Transmission, Heat Capacity, Numerical Analysis
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APA Style
Takashi Nakaya. (2018). Reduction the Effect of Heat Transmission for the Heat Capacity of Building Wall in Summer. American Journal of Agriculture and Forestry, 6(4), 88-97. https://doi.org/10.11648/j.ajaf.20180604.15
ACS Style
Takashi Nakaya. Reduction the Effect of Heat Transmission for the Heat Capacity of Building Wall in Summer. Am. J. Agric. For. 2018, 6(4), 88-97. doi: 10.11648/j.ajaf.20180604.15
AMA Style
Takashi Nakaya. Reduction the Effect of Heat Transmission for the Heat Capacity of Building Wall in Summer. Am J Agric For. 2018;6(4):88-97. doi: 10.11648/j.ajaf.20180604.15
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Download@article{10.11648/j.ajaf.20180604.15,
author = {Takashi Nakaya},
title = {Reduction the Effect of Heat Transmission for the Heat Capacity of Building Wall in Summer},
journal = {American Journal of Agriculture and Forestry},
volume = {6},
number = {4},
pages = {88-97},
doi = {10.11648/j.ajaf.20180604.15},
url = {https://doi.org/10.11648/j.ajaf.20180604.15},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20180604.15},
abstract = {For the wall model of a building affected by solar radiation, a one-dimensional transient thermal conduction analysis was conducted. The purpose of the analysis was to examine the effect of wall thickness and heat capacity on heat transfer. On the westward wall in summer, the temperature distribution indoor the wall became parabolic. Even after the evening, the heat flux direction was outdoor from the wall and indoor from the wall, even in the conditions where the sol-air temperature was higher than the indoor temperature. The re-emit of the outside surface continued from evening till the morning of the next day. In the daytime, the heat quantity that entered from the outdoor air into the wall body did not all flow through the room, but a part was re-emitted to the outdoor. Particularly in the case of materials with low thermal conductivity and high volumetric specific heat, the effect of re-emit was remarkable. Regarding the amount of re-emit, the woody material with a large volumetric specific heat and the glass wool with a small volumetric specific heat were compared. It was suggested that the heat capacity could reduce the heat flux.},
year = {2018}
}
TY - JOUR T1 - Reduction the Effect of Heat Transmission for the Heat Capacity of Building Wall in Summer AU - Takashi Nakaya Y1 - 2018/08/23 PY - 2018 N1 - https://doi.org/10.11648/j.ajaf.20180604.15 DO - 10.11648/j.ajaf.20180604.15 T2 - American Journal of Agriculture and Forestry JF - American Journal of Agriculture and Forestry JO - American Journal of Agriculture and Forestry SP - 88 EP - 97 PB - Science Publishing Group SN - 2330-8591 UR - https://doi.org/10.11648/j.ajaf.20180604.15 AB - For the wall model of a building affected by solar radiation, a one-dimensional transient thermal conduction analysis was conducted. The purpose of the analysis was to examine the effect of wall thickness and heat capacity on heat transfer. On the westward wall in summer, the temperature distribution indoor the wall became parabolic. Even after the evening, the heat flux direction was outdoor from the wall and indoor from the wall, even in the conditions where the sol-air temperature was higher than the indoor temperature. The re-emit of the outside surface continued from evening till the morning of the next day. In the daytime, the heat quantity that entered from the outdoor air into the wall body did not all flow through the room, but a part was re-emitted to the outdoor. Particularly in the case of materials with low thermal conductivity and high volumetric specific heat, the effect of re-emit was remarkable. Regarding the amount of re-emit, the woody material with a large volumetric specific heat and the glass wool with a small volumetric specific heat were compared. It was suggested that the heat capacity could reduce the heat flux. VL - 6 IS - 4 ER -
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