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An analysis of measured and simulated daylight illuminance and lighting savings in a daylit corridor

机译：分析和模拟日光走廊中的日光照度和节能量

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Lighting control integrated with daylighting is recognised as an important and useful strategy in energy-efficient building designs and operations. Prediction of the internal daylight levels is a key stage in daylighting designs. With the advances in computer technology, the computation of daylight illuminances can be conducted via lighting simulation program. This paper presents a study of the daylight coefficient (DC) approach using RADIANCE lighting software in simulating the indoor daylight illuminance of a corridor. The interior daylight illuminance data measured in the corridor were compared with the simulated results based on the computer software. It was found that the DC approach could give satisfactory results especially for the sun-shaded surface and sun-facing surface receiving a large amount of direct sunlight. Further, the daylight illuminance detected by the photosensor was also simulated in conjunction with measured daylight illuminance, dimming ratio and electric lighting power to predict the lighting energy savings. The findings suggested that the measured and predicted data showed a good agreement when large electric lighting savings resulted. The probable reasons causing the discrepancies were discussed.
机译：与采光相结合的照明控制被认为是节能建筑设计和运营中的重要且有用的策略。内部采光水平的预测是采光设计的关键阶段。随着计算机技术的进步，可以通过照明模拟程序进行日照度的计算。本文介绍了使用RADIANCE照明软件模拟走廊的室内日照度的日光系数（DC）方法的研究。将走廊中测得的室内日照度数据与基于计算机软件的模拟结果进行了比较。发现DC方法可以给出令人满意的结果，特别是对于接受大量直射阳光的遮阳表面和面向太阳的表面。此外，还结合测得的日照度，调光率和电照明功率对光传感器检测到的日照度进行了模拟，以预测照明节能量。研究结果表明，当节省大量电照明时，测得的和预测的数据显示出良好的一致性。讨论了导致差异的可能原因。

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