Yoo Seunghwan, Kim Jonghun, Jang Cheol-Yong, Jeong Hakgeun
Opt Express. 2014 Jan 13;22 Suppl 1:A132-43. doi: 10.1364/OE.22.00A132.
Artificial lighting in office buildings typically requires 30% of the total energy consumption of the building, providing a substantial opportunity for energy savings. To reduce the energy consumed by indoor lighting, we propose a sensor-less light-emitting diode (LED) dimming system using daylight harvesting. In this study, we used light simulation software to quantify and visualize daylight, and analyzed the correlation between photovoltaic (PV) power generation and indoor illumination in an office with an integrated PV system. In addition, we calculated the distribution of daylight illumination into the office and dimming ratios for the individual control of LED lights. Also, we were able directly to use the electric power generated by PV system. As a result, power consumption for electric lighting was reduced by 40 - 70% depending on the season and the weather conditions. Thus, the dimming system proposed in this study can be used to control electric lighting to reduce energy use cost-effectively and simply.
办公楼中的人工照明通常占建筑总能耗的30%，这为节能提供了巨大的机会。为了减少室内照明的能耗，我们提出了一种利用采光的无传感器发光二极管（LED）调光系统。在本研究中，我们使用光模拟软件对日光进行量化和可视化，并分析了一个集成光伏系统的办公室中光伏发电与室内照明之间的相关性。此外，我们计算了进入办公室的日光照明分布以及用于LED灯单独控制的调光率。而且，我们能够直接使用光伏系统产生的电力。结果，根据季节和天气条件，电照明的功耗降低了40% - 70%。因此，本研究中提出的调光系统可用于控制电照明，以经济高效且简单地降低能源使用成本。
