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Energies 2016, 9(3), 206; doi:10.3390/en9030206

The Evaluation of Energy Conservation Performance on Electricity: A Case Study of the TFT-LCD Optronics Industry

Department of Occupational Safety and Health, China Medical University, 91 Hsueh-Shih Rd., Taichung 40402, Taiwan
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Academic Editor: Silvio Simani
Received: 9 December 2015 / Revised: 16 February 2016 / Accepted: 4 March 2016 / Published: 17 March 2016
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Abstract

This study describes the performance evaluation of an energy management system, based on electricity consumption, for a Gen 6 Thin Film Transistor Liquid Crystal Display (TFT-LCD) panel plant. Of the various production lines and facility systems, the array system and the compressed dry air consumed the most electricity of 21.8% and 19.8%, respectively, while the public utility used only 1.6% of the total electricity. The baseline electricity consumptions were correlated well (R2 ≥ 0.77) to the monthly average wet-bulb temperatures of ambient air and the panel yield rates, which were determined by the product yield over the equipment available time index. After implementing the energy saving projects, the energy conservation performance was determined using a three-parameter change-point regression model incorporated with the panel yield rates. The post-retrofit monthly savings of the total electricity consumption for the panel manufacture were 5.35%–10.36%, with the efficiency of the electricity performance revealing an upswing trend following the implementation of the energy management system. View Full-Text
Keywords: wet-bulb temperature; yield rate; three-parameter change-point model; energy management system wet-bulb temperature; yield rate; three-parameter change-point model; energy management system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, V.-S.; Sie, C.-F.; Chang, T.-Y.; Chao, K.-P. The Evaluation of Energy Conservation Performance on Electricity: A Case Study of the TFT-LCD Optronics Industry. Energies 2016, 9, 206.

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