| dc.description.abstract | Though the elevator was invented over a century ago, the correlations between elevator use behavior and elevator electricity consumption were rarely studied in Taiwan. As energy resources are reducing, making effective use of energy and changing the human behavioral patterns of energy use have become an immediate issue apart from developing alternative energy. This study investigated the effective energy-saving strategies and energy-saving efficiency of elevators through continuous electricity monitoring in order to provide life administrators with a reference for saving energy from elevator use.
This study conducted the elevator travel control experiment and elevator use behavior analysis with the Elevator Electricity Real-time Monitoring System in Hall A51, Industrial Technology Research Institute (ITRI), in Hsinchu. By analyzing the continuous electricity monitoring data and establishing a standard model, a method, indicators, and a database for estimating the number of floors that passengers travel in elevators were established.
This study investigated the correlations among the number of floors travelled by the elevator, elevator load and traveling direction, and elevator operating time with the single-floor elevator travel control experiment. Statistics at 95% confidence show that the difference between the same floor to which elevators travel and elevator load and traveling direction is statistically significant; though the difference between the operating time of elevators traveling to the same floor and the elevator load and traveling direction is statically insignificant. Therefore, the elevator operating time can be an indicator for estimating the number of floors that an elevator travels.
The multi-floor elevator travel control experiment was further conducted, and a database has been successfully established to discriminate the correlations between the time and number of floors the elevator travels as the foundation for further analyzing the actual elevator use behavior. Results of the empirical analysis of a total of 345,600 electricity data items collected on weekdays and holidays from elevators 4~6 in Hall A51 show that the average electricity consumption of every travel is about 0.014~0.018kwh, and about 0.001~0.007 kwh of electricity is needed for traveling to another floor. The peak elevator use session is 07:00~19:00, consuming 92% of electricity for elevator operations; 1474 travels fall between the 1st and 3rd floors, commanding at 42% of total elevator occupancy. By encouraging passengers to take the stairs to travel to lower floors (3 or less), On average, 14% of energy is saved by an elevator on a daily basis.When elevator occupancy is less than 42 times/hour, i.e. 20:00~07:00 on weekdays,If the elevator is shut down between 8pm – 7am, 18% of energy is saved by an elevator on a daily basis
Results of this study show that the effective use of electricity monitoring data can provide important references for elevator control and thereby ensure enhance energy-saving efficiency.
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