Enabling year-round cultivation in the Nordics: Agrivoltaics and adaptive Led lighting control of Daily Light Integral

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Hernandez Velasco, Marco,1985-Högskolan Dalarna,Uppsala universitet,Solcellsteknik,Department of Energy and Built Environments, Dalarna University, 791 88 Falun, Sweden,Energiteknik (author)

Enabling year-round cultivation in the Nordics : Agrivoltaics and adaptive Led lighting control of Daily Light Integral

Article/chapterEnglish2021

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2021-12-11
Springer Nature,2021
electronicrdacarrier

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LIBRIS-ID:oai:DiVA.org:uu-456985
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-456985URI
https://doi.org/10.3390/agriculture11121255DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:du-39169URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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High efficacy LED lamps combined with adaptive lighting control and greenhouse integrated photovoltaics (PV) could enable the concept of year-round cultivation. This concept can be especially useful for increasing the production in the Nordic countries of crops like herbaceous perennials, forest seedlings, and other potted plants not native of the region, which are grown more than one season in this harsh climate. Meteorological satellite data of this region was analyzed in a parametric study to evaluate the potential of these technologies. The generated maps showed monthly average temperatures fluctuating from −20 °C to 20 °C throughout the year. The natural photoperiod and light intensity also changed drastically, resulting in monthly average daily light integral (DLI) levels ranging from 45–50 mol·m−2·d−1 in summer and contrasting with 0–5 mol·m−2·d−1 during winter. To compensate, growth room cultivation that is independent of outdoor conditions could be used in winter. Depending on the efficacy of the lamps, the electricity required for sole-source lighting at an intensity of 300 µmol·m−2·s−1 for 16 h would be between 1.4 and 2.4 kWh·m−2·d−1. Greenhouses with supplementary lighting could help start the cultivation earlier in spring and extend it further into autumn. The energy required for lighting highly depends on several factors such as the natural light transmittance, the light threshold settings, and the lighting control protocol, resulting in electric demands between 0.6 and 2.4 kWh·m−2·d−1. Integrating PV on the roof or wall structures of the greenhouse could offset some of this electricity, with specific energy yields ranging from 400 to 1120 kWh·kW−1·yr−1 depending on the region and system design.

Subject headings and genre

LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Trädgårdsvetenskap/hortikultur hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Horticulture hsv//eng
LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Skogsvetenskap hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Forest Science hsv//eng
TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Annan elektroteknik och elektronik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Husbyggnad hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Building Technologies hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Energisystem hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Energy Systems hsv//eng
daily light integral (DLI) maps
LED grow lights
greenhouse integrated PV
adaptive lighting control
year-round cultivation
agrivoltaics
Zephyr, EU projekt inom 7:e ramprogrammet, europeiskt samverkansprojekt för utveckling av ny energisnål och miljövänlig teknik för produktion av skogsplantor

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Uppsala universitetSolcellsteknik (creator_code:org_t)

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In:Agriculture: Springer Nature11:122077-0472

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AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Agriculture Fore ...; and Horticulture

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