Analysis of office lighting under power-saving policies for the development of a new energy-saving office lighting

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360240
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Architectural environment/equipment
• Research Institution: Tokai University
• Principal Investigator: IWATA Toshie 東海大学, 工学部, 教授 (80270627)
• Co-Investigator(Kenkyū-buntansha): YOSHIZAWA Nozomu 東京理科大学, 理工学部, 教授 (40349832) ; MOCHIZUKI Etsuko 千葉工業大学, 工学部, 教授 (80458629) ; HIRATE Kotaro 東京大学, 工学研究科, 教授 (70165182) ; MUNAKATA Jun 千葉大学, 工学研究科, 教授 (80323517) ; AKASHI Yukio 福井大学, 工学研究科, 教授 (10456436)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 光環境 / 省エネルギー / オフィス / 照度 / 不均一照明 / 変動照明 / 昼光照明 / 輝度

Outline of Final Research Achievements

This study records office lighting under power-saving policies enacted in the aftermath of the Great East Japan Earthquake. From the real situation investigated, basic requirements of office lighting are extracted and a new energy-saving lighting method is developed.
The office lighting under the power-saving policies shows that strategies for reducing energy for office lighting includes not only lamps or luminaires with higher efficiency but also a lower illuminance, a smaller illuminated area and a shorter lighting duration. They had been avoided due to a possibility to deteriorate quality of lighting environment. This study proposed a “non-uniform and non-stable” lighting environment based on human visual properties using daylight, which can reduce energy consumption. This brings us to the starting line for new office lighting standards.

Free Research Field

建築環境工学