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Energy Efficient Lighting in Plant Factories: Addressing Utilance

Balasus, Jens ; Blank, Janis ; Babilon, Sebastian ; Hegemann, Tim ; Khanh, Tran Quoc (2022):
Energy Efficient Lighting in Plant Factories: Addressing Utilance. (Publisher's Version)
In: Agronomy, 11 (12), MDPI, e-ISSN 2073-4395,
DOI: 10.26083/tuprints-00020273,

Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Energy Efficient Lighting in Plant Factories: Addressing Utilance
Language: English

Vertical farming is considered to play a crucial role in future food supply. Until today, the high amount of electrical energy required for artificial lighting has been problematic in this context. Various possibilities for increasing efficiency through adapted lighting conditions have been and are being investigated. However, comparably little attention is paid to increasing utilance, i.e., the amount of photons that can effectively be used by the plant. In this work, a novel targeted lighting strategy is therefore proposed that allows for a dynamic adaptation of the luminaires’ light distribution to match the effective crop size at each stage of plant growth in a fully-automated manner. It is shown that the resulting utilance can significantly be increased compared to standard full-coverage lighting. Moreover, it is found that the proposed strategy is likely to consume less than half of the electrical energy usually required for the latter. An additional increase in system efficiency can be prognosticated and the potential energy savings are estimated based on assumptions of future LED generations derived from literature.

Journal or Publication Title: Agronomy
Volume of the journal: 11
Issue Number: 12
Place of Publication: Darmstadt
Publisher: MDPI
Collation: 17 Seiten
Uncontrolled Keywords: horticultural lighting, dynamic light distribution, targeted lighting, utilance, LED lighting
Classification DDC: 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie
600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
Divisions: 18 Department of Electrical Engineering and Information Technology > Adaptive Lighting Systems and Visual Processing
Date Deposited: 29 Apr 2022 09:06
Last Modified: 06 Oct 2022 11:54
DOI: 10.26083/tuprints-00020273
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-202731
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20273
PPN: 499851528
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