The solar energy producing greenhouse

Transform energy consuming commercial greenhouses into solar energy production units with lightweight solar absorbers interconnected and serviced by an electrical heat pump.

Project description

This project is devoted to redesign and to conceptualize solar process-heating in the settings of large scale commercial greenhouses. In a joint collaboration between the nursery Knud Jepsen a/s and Arcon Solar a/s, conventional greenhouses will be converted into energy producing units with the installment of lightweight solar absorbers. The experimental stages of this project are directed towards the development of a cost-efficient solar process heat collector, optimization of the temperature of the heat delivered, while keeping the collector efficiency highest possible. Focal points in the experimental stages of the project will be directed into control of heat loss and maximization of energy collection. The solar process-heating system can be applied in ''Closed greenhouses'' without production of flowers or vegetables and thus completely devoted to solar energy extraction or ''Semi-closed greenhouses'' with a mixed allocation of system mode with intensive production schemes in certain seasons of the year combined with solar extraction. Co-production of renewable solar heat with greenhouse production of vegetables and potted plants will be feasible at much lesser installation costs and interconnected with backup sources of heat supply

Results

In a joint collaboration between the nursery Knud Jepsen a/s and Arcon Solar a/s, conventional greenhouses have been converted into energy producing units with the installment of lightweight solar absorbers and electrical heatpumps. The experimental layout comprised three different solutions: Mobile Solar Collectors suspending the entire greenhouse space/groundfloor; Adjustable Solar Collectors mounted in the span constructions and a ‘Closed Greenhouse’ with high pressure sprinklers and air to water heat exchangers. The solar heat extraction from greenhouses exceeded the consumption of thermal heat from March to October in Northern Europe, and may facilitate co-production of renewable solar heat with commercial greenhouse production.

Key figures

Period:
2011 - 2014
Funding year:
2011
Own financial contribution:
4.40 mio. DKK
Grant:
4.40 mio. DKK
Funding rate:
50 %
Project budget:
8.80 mio. DKK

Category

Oprindelig title
Væksthus som energigenerator drevet af solenergi
Programme
EUDP
Technology
Solar
Case no.
64011-0001

Dokumenter

Participants

A/S KNUD JEPSEN (Main Responsible)
Partners and economy
Partner Subsidy Auto financing
A/S KNUD JEPSEN 4,25 mio. DKK 4,25 mio. DKK
ARCON SOLAR A/S 0,15 mio. DKK 0,15 mio. DKK

Contact

Kontakperson
Nielsen, Knud Erik ARCON Solar A/S
Comtact information

Knud Jepsen a/s
Skanderborgvej 193
DK-8382 Hinnerup
www.queen.dk
Nielsen, Knud Erik ARCON Solar A/S, 86986166, frands@queen.dk
Øvr. Partnere: ARCON Solar A/S

Contact email
arcon@arcon.dk

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