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RE: [EnergyPlus_Support] Solar wall module
Hi Albrecht,
A solar wall model (a.k.a. transpired solar collector) is planned for EnergyPlus but will not be in the upcoming April release. It may be possible in the meantime to approximate it using existing EnergyPlus components, perhaps modeling the solar wall as a separate zone (kind of like a Trombe wall), but the problem is in the convection coefficients in the air gap inside of the solar wall. Since it is forced convection in a narrow slot, the ordinary room air convection coefficients do not apply. The Trombe wall coefficients won't work either because they assume natural convection. If you have a model that you can use to estimate the coefficients, you could use the user-defined CONVECTIONCOEFFICIENTS object to set the values that you want on the solar wall surfaces. I would be interested to hear if you get something like this to work!
Thanks,
Peter Graham Ellis
National Renewable Energy Laboratory
peter_ellis@xxxxxxxx
303-384-7443
-----Original Message-----
From: Albrecht Stoecklein [mailto:AlbrechtStoecklein@xxxxxxxxxxx]
Sent: Thursday, January 22, 2004 7:03 PM
To: 'EnergyPlus_Support@xxxxxxxxxxxxxxx'
Subject: [EnergyPlus_Support] Solar wall module
Hi all,
Is anyone currently working on a solar wall module for Energy+ or has
experience on how to simulate a solar wall using existing Energy+ elements?
( http://www.solarwall.com/ < http://www.solarwall.com/> )
Thanks
Albrecht
Albrecht Stoecklein (MSc, Dipl. Energy Mgmt.)
Senior Energy Scientist
Building Research Association of New Zealand (BRANZ Ltd.)
Private Bag 50908, Porirua City, New Zealand
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