I have used a metal panel material with other side coefficients to simulate warm surfaces like swimming pool water and it seems to work well to represent convective
and radiant heat flows
Ned Lyon, P.E. (MA)
Staff Consultant
SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
781.907.9009 fax
www.sgh.com
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
On Behalf Of Griffith, Brent
Sent: Wednesday, May 23, 2012 5:32 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: RE: [EnergyPlus_Support] Assigning a temperature to an inside surface
Yes, a low resistance surface should work well. If it was a typical building construction assembly, with resistance and mass, then
the other side coefficients could be adjusted to get the desired inside face temperatures.
From:
EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
On Behalf Of Simge Andolsun
Sent: Wednesday, May 23, 2012 3:07 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Assigning a temperature to an inside surface
Dear Jason,
Thanks for your reply. What do you mean by "iteratively adjusting your otherside cofficients definition"? Could you please explain it?
I thought of modeling the construction as a massless, very low resistance surface (0.001 m2K/W= Minimum allowable material resistance in EnergyPlus) and assigning the interior temperatures I have as the outside temperatures of this
massless, very low resistance construction. Do you think it makes sense? Please let me know.
Thanks in advance for your help,
Best Regards,
Simge Andolsun
PhD Candidate
Texas A&M University
College of Architecture
From: Jason Kirkpatrick <jason.alan.kirkpatrick@xxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Wednesday, May 23, 2012 1:43 PM
Subject: Re: [EnergyPlus_Support] Assigning a temperature to an inside surface
Simge,
You could use SurfaceProperty:OthersideCoefficients to schedule a constant or time varying temperature on the exterior of a surface.
You could then report the below variables and iteratively adjust your otherside coefficients definition until you get the desired temperature / profile
To do this, in the desired BuildingSurface:Detailed, change the outside boundary condition to OtherSideCoefficients and then reference that objects name in the 'Outside Boundary condition object' field. Be sure to read about the otherside coefficients object
in the I/O reference as using this will cause the simulation to ignore the external
environment for that surface.
Output:Variable,*,Surface Inside Temperature,hourly; !- Zone Average [C]
Output:Variable,*,Surface Int Adjacent Air Temperature,hourly; !- Zone Average [C]
Hope this helps.
Jason
On Wed, May 23, 2012 at 12:13 PM, Simge Andolsun <simgeandolsun@xxxxxxxxx> wrote:
Dear EnergyPlus users,
Is it possible to assign a temperature (or a set of varying temperatures) to the inside surface of a construction in EnergyPlus? If there is, could you please describe how it is used?
Thanks in advance,
Best Regards,
Simge Andolsun
PhD Candidate
Texas A&M University
College of Architecture
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