| Author: | Li, Yuyuan |
| Title: | Energy performance assessment and optimization of campus building |
| Advisors: | Wang, Shengwei (BSE) |
| Degree: | M.Eng. |
| Year: | 2015 |
| Subject: | Buildings -- Energy conservation. Buildings -- Energy consumption. Air conditioning -- Energy conservation. Air conditioning -- Energy consumption. Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Building Services Engineering |
| Pages: | ix, 59 pages : illustrations (some color) |
| Language: | English |
| Abstract: | This dissertation presents energy performance assessment and optimal control strategies for The Hong Kong Polytechnic University Phase 5 buildings. New water-cooled chillers replaced old air-cooled chillers of Phase 5 buildings. For the new chiller plant energy performance assessment, BMS measurement-based method was used. For the improvement of the building central chilling system, the operation schedule and cooling tower sequence were mainly concerned. According to new chiller plant energy analysis of second half year of 2014, the new chiller plant energy consumption of 2014 was much lower than that in 2013, which energy saving counted 249,431 KWh and occupied 34% for the total energy use of 2013. Though the analysis of CDD, the cooling demand of 2014 was higher than that in 2013. Obviously, the new chiller plant saved energy without the optimal control. The maximum monthly energy saving appeared in Nov. 2014, which saved 42% for the total chiller plant energy use of 2013. Chilled water pump and cooling tower fan performed at required condition under the high load condition. Their control strategy was improved under part load condition. And the operation schedule and cooling tower sequence were considered to be enhanced. It was assumed that new water-cooled chillers would work at night mode instead of old air-cooled chillers during Oct. to Dec. 2014. Energy reduction would be 156,501 KWh, which accounted for average 44.6% of the energy use of old chiller plant. The availability of operation and power information has restricted the search of energy saving measures. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b28261227.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 1.96 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/8218