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Re: [EnergyPlus_Support] Modeling bermed structures
Ian,
Ground heat transfer has been a pet topic of mine. I would be interested to
read this paper if you manage to find a copy of it or the link. One thought
I've had about validating simulation results against measured data for
underground heat flows is that you may not want to initialize the run for
years (my experience has been that it took five years for a ground model to
reach periodic steady state). Depending on when the building was built, you
would want to initialize the ground field with no building, and then
simulate the building for the same amount of time as it's been actually
around.
Joe
----- Original Message -----
From: "Ian Doebber" <ian.doebber@xxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Wednesday, July 13, 2005 12:39 PM
Subject: RE: [EnergyPlus_Support] Modeling bermed structures
>I remember reading a paper comparing actual data from an underground house
> with data calculated from EnergyPlus. I believe it was from New Zealand.
> It looked into the issue of running EnergyPlus over several years of
> simulation to account for the extreme thermal delay associated with ground
> coupling. Try the EnergyPlus documentation page for papers. Maybe
> someone
> else can jog my memory.
>
>
>
> Good Luck,
>
>
>
> Ian Doebber
>
> Graduate Mechanical Engineer
>
> Arup
>
> 901 Market Street Suite 260 San Francisco CA 94103
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> <mailto:ian.doebber@xxxxxxxx> ian.doebber@xxxxxxxx
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> _____
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Richard J. Liesen
> Sent: Wednesday, July 13, 2005 8:16 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: Re: [EnergyPlus_Support] Modeling bermed structures
>
>
>
> If you simulate your model for an entire year you will see the thermal
> capacitance effects for that entire year. If you simulate it for 1 day
> you
> will see the effects for a 24 hour period.
>
> Richard Liesen
>
> At 07:36 AM 7/13/2005, you wrote:
>>Is Energyplus able to model a structure's thermal lag at a large
>>temporal scale (i.e. a full year)? Or does it limit itself to 24 hour
>>thermal variations? The intent is to simulate a home's thermal
>>response to berming.
>>
>>Regards,
>>Manu
>>
>>
>>
>>
>>
>>The primary EnergyPlus web site is found at:
>>http://www.energyplus.gov <http://www.energyplus.gov>
>>
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>>
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>>
>>
>>
>
>
>
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