Could Daylight Glare Be Defined Mathematically? Results of Testing the DGIN Method in Japan

スポンサーリンク

概要

• 論文の詳細を見る

• Discomfort glare from daylight is a common problem without valid prediction methods so far. A new mathematical DGI_N (New Daylight Glare Index) method tries to respond the challenge. This paper reports on experiments carried out in daylit office environment in Japan to test applicability of the method. Slight positive correlation was found between the DGI_N and the subjective evaluation. Additionally, a high L_<adaptation> value together with the small ratio of L_<window> to L_<adaptation> was obviously experienced sufficient to neutralize the effect of glare discomfort. However, subjective assessments are poor glare indicators and not reliable in testing glare prediction methods. DGI_N is a good indicator of daylight glare, and when the DGI_N value is analyzed together with the measured illuminance ratios, discomfort glare from daylight can be analyzed in a quantitative manner. The DGI_N method could serve architects and lighting designers in testing daylighting systems, and also guide the action of daylight responsive lighting controls.

• 社団法人照明学会の論文

著者

• Nazzal Ali

  University Of Helsinki Department Of Physical Sciences

• Oki Masato

  Ashikaga Institute Of Technology Department Of Architecture

関連論文

• Could Daylight Glare Be Defined Mathematically? Results of Testing the DGIN Method in Japan

スポンサーリンク