Abstract
The purpose of this study is to reduce the unnecessary plug loads used by computers, monitors, and computer peripheral devices, all of which account for more than 95% of the entire plug loads of an office building. To this end, an occupant-based plug-in device control (OBC-P) software was developed. The OBC-P software collects real-time information about the presence or absence of occupants who are connected to the access point through the Wifi and controls the power of monitors or computers, while a standby power off device controls computer peripheral devices. To measure the plug load saving of the occupant-based plug-in device control, an experiment was conducted, targeting 10 occupants of three research labs of the graduate school, for two weeks. The experiment results showed that it could save the plug loads of monitors and computer peripheral devices by 15% in the Awake mode, and by 26% in the Sleep mode.
Highlights
IntroductionThe reduction of plug loads in office buildings was heavily dependent on the improvement of the behaviors of occupants, by raising their awareness about the importance of energy saving [1,3,4,5]
According to the U.S Department of Energy (DOE), about 33% of the entire energy consumption of an office building is consumed by plug loads, which are expected to surge to 49% by 2030 [1,2]
This study was conducted to develop a way of reducing unnecessary plug loads while minimizing the inconvenience of occupants by using an occupant-based automatic control of computers, monitors and computer peripheral devices, all of which account for approximately 95% of plug loads of an office building
Summary
The reduction of plug loads in office buildings was heavily dependent on the improvement of the behaviors of occupants, by raising their awareness about the importance of energy saving [1,3,4,5]. As the dependence on occupants’ behaviors inevitably caused inconvenience to occupants, it was difficult to expect continuous plug load saving effects. The standby power off device has been widely used to reduce the unnecessary plug loads of computer peripheral devices of an office building [1,3]. The plug load saving effect using the existing standby power off devices was still dependent on occupants’
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