Energy saving and payback period for retrofitting air conditioning systems in Taiwan

Chung Yi Chang, Hsien Te Lin, Chun Ta Tzeng, Kuan Hsiung Yang, Yew Khoy Chuah, Ming Chin Ho

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

In Taiwan, AC systems in buildings with central air conditioning account for over 45% of the total electricity consumed. Inefficient and poorly designed AC systems in existing buildings waste considerable amounts of money and energy. Therefore, retrofitting AC systems has become a widely adopted strategy to save energy while maintaining a comfortable indoor thermal environment. This study analyzes the potential energy savings and payback period of retrofitting AC systems in public buildings. In addition to the required Building Energy Management System (BEMS), several measures are introduced to reduce energy consumption during retrofitting. The main measures include testing, adjusting, and balancing (TAB) of existing AC systems; replacing over-designed chillers with chillers with smaller capacity; installing frequency conversion in original systems, such that they become variable water volume (VWV) and variable air volume (VAV) systems; and utilizing CO 2 concentration control and pre-cooling air systems. Based on analytical results, we conclude that AC system retrofitting can reduce total energy usage by 11.75%, while the average payback period for a retrofit project is 4.71 years, demonstrating that AC system retrofitting in Taiwan is economically sound.

原文English
主出版物標題Frontiers of Manufacturing and Design Science II
頁面2850-2854
頁數5
DOIs
出版狀態Published - 2012
事件2nd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2011 - Taichung, Taiwan
持續時間: 2011 12月 112011 12月 13

出版系列

名字Applied Mechanics and Materials
121-126
ISSN(列印)1660-9336
ISSN(電子)1662-7482

Other

Other2nd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2011
國家/地區Taiwan
城市Taichung
期間11-12-1111-12-13

All Science Journal Classification (ASJC) codes

  • 一般工程

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