静穏室内における人体の吸気領域に関するCFD解析

概要

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In this paper, new indices for evaluating the inhaled air region are proposed. It expresses that the part of the room air which is going to be inhaled by a human body. Indoor air pollutants such as VOCs generated from building materials are transported by room air convection and finally exhausted through the outlet opening. In the process of room air convection, some portion of the pollutant is inhaled by the human body. The human body is covered by rising stream around it. It is generated by a heat discharge due to metabolism. The mechanism of inhalation is greatly influenced by the rising stream, in order to analyze the inhaled air region in a room, we should take into consideration this rising stream around a human body. This paper analyzed the inhaled air region in consideration of human body in three different postures by means of CFD analysis. When human body is standing, human body inhales the air of the lower part of room because the rising stream which generated by metabolic heat draws the air from the lower part of the room to the breathing area of human body. When sitting, inhaled air region distribute the lower region from the mouth like in standing posture. When sleeping, the inhaled air region is distributed over the horizontal direction of the mouth near the floor.
2001-09-30