|Title:||Determination of Radio-Frequency Identification Sensor Locations for an Adapted Air-Conditioning System in a Conference Room||Authors:||Lee, DS
|Keywords:||Adapted Air-Conditioning System; Sensor Setting; RFID; CFD Simulation||Issue Date:||2011||Publisher:||AMER SCIENTIFIC PUBLISHERS||Journal Volume:||4||Journal Issue:||8-10||Start page/Pages:||2790||Source:||ADVANCED SCIENCE LETTERS||Abstract:||
The installation locations of sensors can substantially affect the performance of building thermal control. Various types of radio-frequency identification (RFID) tags have shown their potential as low-cost remote sensors to transmit telemetry data back to a command center for enhancement of the energy saving and thermal comfort purposes. This study presents a novel method using computational fluid dynamics (CFD)-based simulations to determine the effective RFID temperature sensor locations for providing an adapted air-conditioning (AC) control system with appropriate temperature feedback signals. To conduct the feasibility analysis of this method, we consider the three-dimensional thermo- flow process with the specified inlet air velocity and temperature conditions in a standard full-scale conference room. With no personnel in the room, the airflow velocity and temperature distributions were first solved using CFD simulations and then validated against the measurements obtained from a Testo 400 and RFID temperature sensors for system identification at the baseline state. Considering 8 employees (as the heat sources with a typical averaged heat load of 75 W for each person) at different seat arrangements, the predicted indoor temperature distributions using the validated CFD software were compared with the baseline temperature field to evaluate the promising sensor locations, which were determined by the high root mean square (RMS) values of temperature variations in conjunction with the thermal comfort consideration over the human activity area. The simulated results evidently indicate the proper RFID sensor positions readily integrated into an adapted air-conditioning control system in the conference room. © 2011 American Scientific Publishers All rights reserved.
|Appears in Collections:||機械工程學系|
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