Evaluation of Radiative Heat Transfer to Human Body in Indoor Space using Projected Area Factors for Each Part of Human Body : Part 2-Estimation of Radiative Heat Flux on Each Part of Human Body and Application to Evaluation of Asymmetric Radiation Environments

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  • 人体各部の投影面積率を用いた室内空間における人体の放射受熱量評価に関する研究 : 第2報-部位別放射受熱量の算出と不均一放射環境の評価への適用
  • ジンタイ カクブ ノ トウカゲメンセキリツ オ モチイタ シツナイ クウカン ニ オケル ジンタイ ノ ホウシャ ジュネツリョウ ヒョウカ ニ カンスル ケンキュウ(ダイ2ホウ)ブイ ベツ ホウシャ ジュネツリョウ ノ サンシュツ ト フキンイツ ホウシャ カンキョウ ノ ヒョウカ エ ノ テキヨウ

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An analysis method that is not computationally demanding and can calculate the radiative heat transfer to each part of the human body is proposed. Following the estimation of the angle factors between the surrounding walls and the human body parts using the projected area factors in the previous paper, this paper describes a calculation procedure for the radiative heat fluxes to the body parts from the surrounding walls. In addition, it is shown that this numerical method can be extended to the estimation of the total radiative heat transfer to the targeted body parts, including the radiative heat fluxes from other body parts. Through a case study of a nonuniform radiative field in an indoor space, the effect of the proposed methodology, which includes the introduction of the projected area factors, consideration of obstacles, etc., on the evaluation results of the radiative heat flux to each part of the human body is discussed. Furthermore, an example evaluation of asymmetric radiative environments of an indoor space is carried out by arranging a number of human models with different postures, sizes, and directions on the floor. The results demonstrate that detailed discussions concerning radiative fields and thermal effects on human body parts anywhere in the room can be made by using the proposed analysis method.

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