Wow, this is what I call superfast response.
Have you read my question at the very about zone temperature
outputs? Do I need to setup some heating device, or schedule for it?
Danko
Davidovic
Staff II - Building Technology
SIMPSON
GUMPERTZ & HEGER
781.907.9000 main
781.907.9260 direct
781.907.9009 fax
www.sgh.com
From:
EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On
Behalf Of Griffith, Brent
Sent: Wednesday, October 28, 2009 7:12 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: RE: [EnergyPlus_Support] Two-three different outside conditions
(weather data)
Interesting
application and just the sort of thing OtherSideCoefficients (OSC) is meant
for. Sounds like you have it correct, here some brief responses.
1. yes
2. no, you
put in the name of the OSC, XYZ in your case
3..9 yes
10.
file should have single columns of 8760 data for each separate schedule.
11. yes.
12.
the name of the schedule can include the full path.
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Danko Davidovic
Sent: Wednesday, October 28, 2009 4:43 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: RE: [EnergyPlus_Support] Two-three different outside conditions
(weather data)
Hi Griffith,
Thanks for your prompt answer.
Trying to summarize the steps I need to accomplish this:
1. For particular building surface
description in: Outside Boundary Condition I select OtherSideCoefficients
2. Do I leave blank Outside Boundary
Condition Object then?
3. In Advance Surface Concepts I select
SurfaceProperty: OtherSIdeCoefficients
4. Add Object there and Name it: XYZ
5. I leave blank Combined
Convective/Radiative Film Coefficient.
Here is description how it is
calculated:
“This object sets the other side
conditions for a surface in a variety of ways.
if>0, this field becomes the
exterior convective/radiative film coefficient and the other fields are used to
calculate the outdoor air temperature then exterior surface temperature based
on outdoor air and specified coefficient if<=0, then remaining fields
calculate the outside surface temperature following fields are used in the
equation: SurfTemp=N7*TempZone + N4*OutdoorDry-bulb + N2*N3 + GroundTemp*N5 +
WindSpeed*N6*OutdoorDry-bulb
ID: N1
No default value available
This field is required.”
6. Set Up Constant Temperature field to
zero for example (Default value)
7. Select my Temp Profile from: Constant
Temperature Schedule Name in the drop list.
8. In the Schedule:File I create previously
my Temp Profile.
9. File Name: I write the name of the file
where the temperatures are written.
10. In which format I should have this text
file created (two columns: hour and temps, or one column only with temperatures
for 8760 hours)
11. Adjust the Column Separator accordingly
to my input file..
12. I assume this file should be located in
the same folder with .idf file cause I don’t see anywhere to enter to the path
to the file.
Am I missing something, and should this
procedure work out (not to be overridden by the algorithm for surface temp)? Do
I need to set up zeros for all other coefficients just to be sure the other
parameters are not used.
To explain a little bit the problem I am
working on. I am trying to calculate the interior temperatures for some huge
underground structure with various levels of ventilation rates (no heating or
cooling). I use other software where I created the underground structure
with surrounding soil and enter the calculated temps for interior air space
from Energy plus. Then I use the output from that software on the outside
boundary of my shell and average them for each level of my structure and enter
those values as outside surface temperatures for each exterior wall. I repeat
this procedure several times until I get reasonable match between the interior
temps and outside surface temps between these two programs. I specified the
ventilation rates through zone ventilation objects where I assign 24/7 schedule
and air changes per hour for each zone.
I have the following problem: when I go
to select the output variable I don’t see a list of zone temperatures (the drop
list is blank). Do I need to specify any type of heating system or something in
order to get this output properly.
Sorry for asking you all these
questions, I am relatively new to text input editor and want to make sure I am
doing everything right.
Thanks one more time for your quick
feedback on my question.
Have a great evening.
Danko Davidovic
Staff II - Building
Technology
SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9260 direct
781.907.9009 fax
www.sgh.com
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Griffith, Brent
Sent: Wednesday, October 28, 2009 4:41 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: RE: [EnergyPlus_Support] Two-three different outside conditions
(weather data)
The input object SurfaceProperty:OtherSideCoefficients
can be used for this. You can schedule an outside surface temperature.
Schedule:File can be helpful for 8760 hourly data.
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of anakondan2001
Sent: Wednesday, October 28, 2009 2:33 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Two-three different outside conditions
(weather data)
I am trying to couple EnergyPlus model with other software that gives
me the temperatures on the outside surface of my building shell. Is there
anyway to input these temperatures into Energy Plus as separate weather file or
additional fake zone with user defined temperature profile for whole year?
Would appreciate any suggestions.
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