Title: Human body exergy consumption in the thermal environment of shelter gymnasium in winter

Authors: Koichi Isawa

Addresses: Department of Architecture, Faculty of Engineering, Fukuyama University, 1 Sanzo, Gakuen-cho, Fukuyama, Hiroshima 729-0292, Japan

Abstract: This study attempts to evaluate the thermal stress in the winter shelter gymnasium in terms of human body exergy balance analysis. The human body's exergy consumption rate was quantitatively analysed, revealing that the total human exergy consumption differs depending on the difference in heat insulation performance of the evacuation gymnasium. Integrated exergy consumption after 30 days is 15.7 MJ/m2 for an 'existing outer skin with no heating', 14.4 MJ/m2 for an 'existing outer skin with radiant heating', and 12.5 MJ/m2 for a 'modified outer shell with no heating' It decreased to 9.6 MJ/m2 in the 'rehabilitating envelope with radiant heating'. In the case of existing hulls, accumulation of thermal stress was found to be greater than in the case of renovation hulls.

Keywords: natural disaster; community shelter; gymnasium; indoor thermal environment; thermal stress; human body; thermal adaptation; physiological adaptation; exergy; numerical analysis; unsteady state; passive system; building envelope; active system; heating system.

DOI: 10.1504/IJEX.2020.104725

International Journal of Exergy, 2020 Vol.31 No.1, pp.34 - 48

Received: 18 Jun 2019
Accepted: 18 Jul 2019

Published online: 29 Jan 2020 *

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