Chiller Pump Control using Temperature Sensor Feedback

Mogens Groth Nicolaisen, Agisilaos Tsouvalas, Carsten Skovmose Kallesoe

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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In commercial chilled water systems, one of the most prevalent system topology is the Primary/Secondary topology. In this topology, the primary and secondary circuits of the hydronic cooling system are hydraulically decoupled by a common pipe also referred to as the bypass. This allows the primary circuit to ensure minimum chiller flow without interfering with the secondary side. To maximize heat transfer and achieve optimal performance, the flow in the primary and secondary systems must equalize and thus leave no flow in the bypass line when the minimum chiller flow requirement is fulfilled. To achieve this goal in a robust and responsive manner a simple and cost-effective feedback method is proposed, where 3 temperature sensors constitute the control feedback for the primary pump control. Closed-loop stability is proven and automatic sensor calibration is proposed. The method is verified through lab test on a setup emulating by-pass of the Primary/Secondary topology.

Original languageEnglish
Title of host publicationCCTA 2021 - 5th IEEE Conference on Control Technology and Applications
Number of pages6
Publication date2021
ISBN (Print)978-1-6654-3644-1
ISBN (Electronic)978-1-6654-3643-4
Publication statusPublished - 2021
Event5th IEEE Conference on Control Technology and Applications, CCTA 2021 - Virtual, San Diego, United States
Duration: 8 Aug 202111 Aug 2021


Conference5th IEEE Conference on Control Technology and Applications, CCTA 2021
Country/TerritoryUnited States
CityVirtual, San Diego
SponsorIEEE Conference on Decision and Control (CDC), IEEE Control Systems Society (CSS)
SeriesIEEE Conference on Control Technology and Applications (CCTA) - Proceedings

Bibliographical note

Publisher Copyright:
© 2021 IEEE.


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