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.
|Titel||CCTA 2021 - 5th IEEE Conference on Control Technology and Applications|
|Status||Udgivet - 2021|
|Begivenhed||5th IEEE Conference on Control Technology and Applications, CCTA 2021 - Virtual, San Diego, USA|
Varighed: 8 aug. 2021 → 11 aug. 2021
|Konference||5th IEEE Conference on Control Technology and Applications, CCTA 2021|
|By||Virtual, San Diego|
|Periode||08/08/2021 → 11/08/2021|
|Sponsor||IEEE Conference on Decision and Control (CDC), IEEE Control Systems Society (CSS)|
|Navn||IEEE Conference on Control Technology and Applications (CCTA) - Proceedings|
Bibliografisk notePublisher Copyright:
© 2021 IEEE.