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Re: [TRNSYS-users] greenhouse models
Hi David,
I confirm that our montoring data (18 month in 5 minute step, also
available in 1 hour step) would be available for testing of such a
greenhouse model. The data concerns 3 identical agricultural greenhouses,
of which 2 were equiped with daily heat storage systems (water tank and
air/soil heat exchanger).
For the standard greenhouse (without storage), the data concerns :
- solar radiation
- ambient temperature and humidity
- internal temperature and humidity at 1 and 2 m height
- temperature of internal shading device
- soil temperature at 40 and 70 cm depth
- auxiliary heating
- humidification system
- opening of windows and activation of shading device
A detailed report can be found on:
www.unige.ch/cuepe/html/biblio/detail.php?id=20
It is in French, but going quickly through the figures will give you an
idea of what was done and what is available (see in particular annex 1)
Best regards
Pierre
PS : let me know if you develop such a greenhouse type.
At 10:42 26.04.2007 -0500, David Bradley wrote:
Colleagues,
A few years ago, we were asked to write a TRNSYS model of a
greenhouse that consists of one or two sheets of thin, translucent
plastic stretched over metal frames. At the time, we sent round an
email asking whether any such models existed and while we received a
helpful reply from Pierre HOLLMULLER concerning some data that had
been taken on thermal storage systems for greenhouses, we concluded
that an actual model had not been written at the time. We have been
asked about writing such a model again and were wondering if any
further projects had been completed in the past few years. Any
information or thoughts you might have would be greatly appreciated.
Cheers,
David
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Pierre Hollmuller
CUEPE (Centre universitaire d'etude des problemes de l'energie)
Universite de Geneve
Battelle batiment A
7 rte de Drize
CH - 1227 Carouge
tel: (+41) 22 / 379 0649
fax: (+41) 22 / 379 0639
e-mail: pierre.hollmuller@cuepe.unige.ch
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