Evaluation of Energy Saving and Economic Benefit of Lighting Planning for Underground Parking Lot

• Main Authors: Kun-Jhih Lin, 林琨智
• Other Authors: Horng-ching Hsiao
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/yv5f7n

碩士 === 國立臺灣科技大學 === 電機工程系 === 99 === Besides the electricity for ventilation systems, lighting electricity accounts 80 % of the total electric energy consumption in an underground parking lot. If the electricity for lighting facilities in an underground parking lot can be smartly distributed according to the time of day and the number of cars entering or exiting the parking lot, the overall lighting electricity can be effectively reduced. This study aims to reduce the electric energy consumption of lighting facilities used in underground parking lot. To achieve this objective, infrared and ultrasonic sensors were adopted to detect moving cars on the driveway of a parking lot. The analog signals detected were converted to digital signals by using Arduino Mega 2560 microprocessing controller and the signals were then transmitted to the AC lighting control circuit to regulate the output of effective AC voltage based on the voltage level of different digital signals. The operation of lighting facilities equipped with T8 LED lamps were controlled by the detected infrared signals from human or cars. Two modes of operation, namely ON and STANDBY, are available, in which the power consumption was 48W and 24W for ON and STANDBY mode, respectively. Implementation of such control measure can significantly reduce the electric energy consumption of lighting facilities for underground parking lot and at the same time maintaining the minimum lighting requirement needed for surveillance purpose. In this study, the lighting facilities inside the underground parking lot of AAEON building in the National Taiwan University of Science and Technology were selected to carry out the investigation. The DIALux lighting simulation software was adopted to design a suitable lighting model which has complied with the CNS underground parking lot lighting standard. The lighting for the driveway region had an average luminance of 77~120 Lux, minimum luminance of 42~59 Lux, maximum luminance of 118~202 Lux and luminance uniformity of 0.541~0.486. Based on non time-of-use rate, the annual electric energy consumption was calculated to be 71.457~87.496 kWh which is equivalent to an annual electric fee of NT$ 304,041~372,286. Similarly, the annual electric fee was calculated to be NT$ 213,139~249,815 if it was based on time-of-use rate.