屋外熱環境計の試作とその検討

概要

論文の詳細を見る
Presented is a meter for measuring the intensity of following factors; 1) air temperature; 2) total environmental solar radiation; 3) mean radiant temperature and 4) wind velocity in an outdoor environment. The meter is composed of three hollow spherical copper globes whose surfaces are blackened and whitened and chromium-plated respectively. As long as temperatures at the center of the globe and ambient air temperature are measured, the above factors are determined by solving the heat balance equations for these globes. Experiments show that the air temperature in the center of the globe in the sunlight is equal to the average surface temperature of the globe. And the result can be derived by a numerical method on assumpting that there is no distribution in the air temperature inside the globe. Deviations of the factors due to an error in the temperature mesurement of the globe with a thermocouple, are calculated in the case of an error of 0.2℃. It needs about five minutes for the globe sensor to reach equilibrium in the steady condition that the air movement is less than 3 m/sec. Measurements with the meter were carried out in a residential area. It was found that the values of the factors differed because of the differences of surrounding materials and the shapes of surrounding buildings; for instance, the values in the shade of buildings, above asphalt pavement and the lawn differed greatly from one another.
社団法人日本建築学会の論文
1988-06-30

屋外熱環境計の試作とその検討

スポンサーリンク

概要

著者

関連論文

スポンサーリンク