LAPSE:2023.33045v1
Published Article
LAPSE:2023.33045v1
A New Model Predictive Control Method for Eliminating Hydraulic Oscillation and Dynamic Hydraulic Imbalance in a Complex Chilled Water System
April 20, 2023
To enhance the energy performance of a central air-conditioning system, an effective control method for the chilled water system is always essential. However, it is a real challenge to distribute exact cooling energy to multiple terminal units in different floors via a complex chilled water network. To mitigate hydraulic imbalance in a complex chilled water system, many throttle valves and variable-speed pumps are installed, which are usually regulated by PID-based controllers. Due to the severe hydraulic coupling among the valves and pumps, the hydraulic oscillation phenomena often occur while using those feedback-based controllers. Based on a data-calibrated water distribution model which can accurately predict the hydraulic behaviors of a chilled water system, a new Model Predictive Control (MPC) method is proposed in this study. The proposed method is validated by a real-life chilled water system in a 22-floor hotel. By the proposed method, the valves and pumps can be regulated safely without any hydraulic oscillations. Simultaneously, the hydraulic imbalance among different floors is also eliminated, which can save 23.3% electricity consumption of the pumps.
Record ID
Keywords
chilled water system, high-rise building, hydraulic oscillation, Model Predictive Control, pipe network
Subject
Suggested Citation
Yuan Y, Zhu N, Zhou H, Wang H. A New Model Predictive Control Method for Eliminating Hydraulic Oscillation and Dynamic Hydraulic Imbalance in a Complex Chilled Water System. (2023). LAPSE:2023.33045v1
Author Affiliations
Yuan Y: School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China; China Academy of Building Research, Beijing 100013, China
Zhu N: School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
Zhou H: China Academy of Building Research, Beijing 100013, China
Wang H: China Academy of Building Research, Beijing 100013, China
Zhu N: School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
Zhou H: China Academy of Building Research, Beijing 100013, China
Wang H: China Academy of Building Research, Beijing 100013, China
Journal Name
Energies
Volume
14
Issue
12
First Page
3608
Year
2021
Publication Date
2021-06-17
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14123608, Publication Type: Journal Article
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LAPSE:2023.33045v1
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doi:10.3390/en14123608
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[v1] (Original Submission)
Apr 20, 2023
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Apr 20, 2023
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