Abstract
A Coupling Control Model of Color Temperature and Illumination in Naturally Lighted Room Based on Evolutionary Algorithm
Highlights
Intelligent buildings can be expected to provide a highly efficient, convenient, comfortable, and energy-saving perfect indoor space environment.[1,2] On the basis of the complete interconnection of electrical and electronic equipment, intelligent buildings can predefine a program in response to information from various sensors and efficiently manage light, temperature, ventilation, and so forth, so as to meet the needs of its owners.[3]
Daylighting can be considered a very important strategy in replacing artificial lighting.[9,10,11] A sensor incorporated smart LED illuminating system has been used for environments that require different lighting levels due to a daylight factor.[12]. The existing research results showed that the introduction of daylight-linked controls can reduce light energy consumption up to 60%, with values ranging from 20 to 40%.(13–16) Simulation showed that the introduction of natural light into the sample space lighting environment can reduce the power consumption of artificial lighting by 50 to 80%.(17)
The existing research studies have indicated that the light quality affects the moods of its users and their comfort and productivity; visual comfort plays a significant role in determining the quality of life of occupants in buildings.[18,19,20] It has been theoretically verified that different color temperature light sources have different effects on the inhibition of melatonin secretion, as well as on sleep status, behavior, and subjective wakefulness.[21,22,23] Brief exposure to strong natural light indoor may reduce afternoon sleepiness,(24) whereas exposure to more sunlight during workdays increases physical activity and sleep duration.[25]. A long-term deprivation of natural light makes people’s circadian rhythms more unstable,(26) whereas too much sunlight may cause glare
Summary
Intelligent buildings can be expected to provide a highly efficient, convenient, comfortable, and energy-saving perfect indoor space environment.[1,2] On the basis of the complete interconnection of electrical and electronic equipment, intelligent buildings can predefine a program in response to information from various sensors and efficiently manage light, temperature, ventilation, and so forth, so as to meet the needs of its owners.[3]. Daylighting can be considered a very important strategy in replacing artificial lighting.[9,10,11] A sensor incorporated smart LED illuminating system has been used for environments that require different lighting levels due to a daylight factor.[12] The existing research results showed that the introduction of daylight-linked controls can reduce light energy consumption up to 60%, with values ranging from 20 to 40%.(13–16) Simulation showed that the introduction of natural light into the sample space lighting environment can reduce the power consumption of artificial lighting by 50 to 80%.(17). As indicated by the above findings, energy saving performance can be improved by combining natural light with artificial light in a single control system while maintaining visual comfort. An indoor light environment control strategy that combines hybrid illuminance with hybrid color temperature is proposed, considering daylight provision, visual comfort, and light energy use
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