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Optimization, Control and Design of Arbitrarily Shaped Fan Arrays

Conrad, Daniel ; Mayer, Jonathan ; Reichert, Erik (2022)
Optimization, Control and Design of Arbitrarily Shaped Fan Arrays.
FAN 2022 – International Conference on Fan Noise, Aerodynamics, Applications and Systems. Senlis, Frankreich (27.06.-29.06.2022)
doi: 10.26083/tuprints-00021723
Conference or Workshop Item, Primary publication, Publisher's Version

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Item Type: Conference or Workshop Item
Type of entry: Primary publication
Title: Optimization, Control and Design of Arbitrarily Shaped Fan Arrays
Language: English
Date: 2022
Place of Publication: Darmstadt
Collation: 9 Seiten
Event Title: FAN 2022 – International Conference on Fan Noise, Aerodynamics, Applications and Systems
Event Location: Senlis, Frankreich
Event Dates: 27.06.-29.06.2022
DOI: 10.26083/tuprints-00021723

Nowadays, medium to large sized fans in traditional applications are increasingly replaced by fanarrays, that is, a number of usually smaller fans operating in parallel. Although the aerodynamic efficiency of single fans still rises through further development, the research and development the field of fan systems will get even more important in the future. Besides redundancy, these fan arrays offer additional degrees of freedom. In applications with varying operating points, high improvement in system efficiency and high energy savings, respectively, can be achieved by selectively turning off some of the fans in an array and controlling the operation of the remaining active fans accordingly. We propose a method for the optimal control of such fan arrays. In our approach, the arrays can be composed of an arbitrarily number of differed sized fans and/or fans with different fan curve characteristics. There are only two prerequisites present in the theoretical derivation of the method. It is assumed that the speed of each fan in the array of fans can be variably controlled up to its maximum rotational speed. Moreover, it is assumed that no backflow occurs in situations where fans are turned off. In reality, this can be achieved using, i.e., some kind of shutters or flaps. For a given fan array and operating point, the method yields the optimal number and combination of active fans and their optimal rotational speed, which maximizes the system efficiency. Lastly, applying this method to the inverse problem, where the shape of the actual array is yet unknown yields an optimal design of fan arrays for given device and fan size constraints.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-217233
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau
Divisions: 16 Department of Mechanical Engineering
Date Deposited: 02 Aug 2022 08:58
Last Modified: 09 Jun 2023 09:29
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21723
PPN: 499051327
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