Lower and upper threshold limit for artificial neural network based chilled and condenser water temperatures set-point control in a chilled water systemopen access
- Authors
- Yeon, Sang Hun; Yoon, Yeobeom; Kang, Won Hee; Lee, Je Hyeon; Song, Kwan Woo; Chae, Young Tae; Choi, Jong Min; Lee, Kwang Ho
- Issue Date
- Dec-2023
- Publisher
- ELSEVIER
- Keywords
- ANN (Artificial neural network); ChWT (Chilled water temperature); CndWT (Condenser water temperature); In-situ application; OWBT (outdoor air wet-bulb temperature)
- Citation
- ENERGY REPORTS, v.9, pp.6349 - 6361
- Journal Title
- ENERGY REPORTS
- Volume
- 9
- Start Page
- 6349
- End Page
- 6361
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/89095
- DOI
- 10.1016/j.egyr.2023.05.263
- ISSN
- 2352-4847
- Abstract
- In this study, an ANN (artificial neural network) based real-time optimized control algorithm for a chilled water cooling system was developed and applied in an actual building to analyze its cooling energy saving effects through in-situ application and actual measurements. For this purpose, the cooling tower's CndWT (condenser water temperature) and the chiller's ChWT (chilled water temperature) were set as system control variables. To evaluate algorithm performance, the electric consumption and the COP (coefficient of performance) were compared and analyzed when ChWT and CndWTs were controlled conventionally and controlled based on the ANN. During the analysis, unexpected abnormal data was observed due to insufficient training data and limited consideration of OWBT (outdoor air wet-bulb temperature) when determining the CndWT set-point. Therefore, it is necessary to further build training data from a wider range of conditions and to set the lower limit of CndWT set-point to at least +3.6 degrees C above OWBT when the OWBT is higher than 23 degrees C, so that further energy savings can be achieved. & COPY; 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 건축학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/89095)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.