放射冷房による居住熱環境の改善に関する研究 : 第1報遮へいを考慮した形態係数の高精度計算法と熱環境解析への応用

概要

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In order to obtain satisfactory thermal sensation in a radiant cooled space, it is necessary to understand a radiation heat transfer around human body quantitatively. This paper mainly describes the calculation method of view factors considering obstacles required for analyzing a local radiation heat transfer in the real radiant cooled space containing complicated shaped objects. In this paper, following steps are proposed. A three-dimensional enclosure is divided into quadrilateral small elements. View factors between small elements are calculated by combining Mitalas-Stephenson's method and a unique method for judging obstacles which enables to understand a visibility between small elements quantitatively by crossing tests. The accuracy of the proposed method is verified by comparing with some previous methods for calculating view factors. In addition the above, the proposed method is applied to the analysis of the steady-state radiant cooling environment of a meeting room with several occupants. The local thermal influence of a heated window and wall to occupants can be evaluated quantitatively.
社団法人日本建築学会の論文
1999-04-30