Optimizing Chilled Water Systems with Cooling Towers via Virtual Power Metrics and Extremum-Seeking Control
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866909044469399552 |
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| author | Yu, Min Gyung Vlachokostas, Alex Devaprasad, Karthik Cornachione, Matt Johnson, Stephanie Yoder, Tim A. Salsbury, Timothy I. |
| author_facet | Yu, Min Gyung Vlachokostas, Alex Devaprasad, Karthik Cornachione, Matt Johnson, Stephanie Yoder, Tim A. Salsbury, Timothy I. |
| contents | This paper presents an extremum seeking control (ESC) method for cooling tower fans to minimize overall power consumption of a chilled water plant system. Simulation studies across different climate locations demonstrate energy savings of approximately 15% compared to conventional control during summer conditions. This paper also proposes a virtual power meter (VPM) to enable use of the strategy in systems that lack physical power meters. Validation tests for the VPMs against physical meters showed good accuracy with a correlation of 96.11% and a normalized error of 5.11%. Coupled with the VPM, the proposed ESC control solution can be implemented on systems using typically available sensor measurements without the need for additional instrumentation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_15431 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Optimizing Chilled Water Systems with Cooling Towers via Virtual Power Metrics and Extremum-Seeking Control Yu, Min Gyung Vlachokostas, Alex Devaprasad, Karthik Cornachione, Matt Johnson, Stephanie Yoder, Tim A. Salsbury, Timothy I. Systems and Control This paper presents an extremum seeking control (ESC) method for cooling tower fans to minimize overall power consumption of a chilled water plant system. Simulation studies across different climate locations demonstrate energy savings of approximately 15% compared to conventional control during summer conditions. This paper also proposes a virtual power meter (VPM) to enable use of the strategy in systems that lack physical power meters. Validation tests for the VPMs against physical meters showed good accuracy with a correlation of 96.11% and a normalized error of 5.11%. Coupled with the VPM, the proposed ESC control solution can be implemented on systems using typically available sensor measurements without the need for additional instrumentation. |
| title | Optimizing Chilled Water Systems with Cooling Towers via Virtual Power Metrics and Extremum-Seeking Control |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2605.15431 |