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RE: [EnergyPlus_Support] BLAST buiding geometry data generation
Dear Mike and unnamed BLAST expert,
Thank you for your response. Regarding Item 2 below, if I draw several
identical zones next to each other with their base on the horizontal (X)
axis, not all the zones will have the same y-coordinate of approximately
0.0, for their respective origins. The offset in the "y" direction is in the
order of 5 to 10 ft, while the interface allows to position zones to within
an accuracy of +/- 0.1 ft! It is true that surface coordinates are
automatically corrected, but that only applies to vertical walls. Roof and
Floor coordinates have to be corrected by manually adjusting the coordinates
on the roof/floor input screen. That is what I was referring to, in my
previous e-mail, as being time consuming. I attempted to edit the zone
origin coordinates in the ''.BS" file hoping that the diagram will be
modified based on the new ".BS" file. That attempt resulted in an error. Do
you have any quick work-around suggestions?
Thank you for your support.
Merid
_____
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Michael J. Witte
Sent: Friday, April 13, 2007 11:21 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] BLAST buiding geometry data generation
There are no known problems with the HBLC geometry data, but I have some
suggestions or explanations which might help. (Thanks to help from an
unnamed
BLAST/HBLC expert!)
1. The default roof and floors which are added to non-rectangular zones may
be
causing some confusion. HBLC will put an equivalent area roof surface above
the zone and another equivalent surface as the floor. This allows the user
to
put in complex looking wall geometries and HBLC to determine the correct
roof/floor area and enter in the one rectangular equivalent surface.
The user can go into HBLC double-click on the roof and bring up the
roof/floor
input screen. Then uncheck the auto calculation and then enter the
coordinates
for the roof and floors by hand to explicitly place them geometrically
correct.
But I would not do this until all of the zones have been inputted.
2. Zone origins are 0,0,0 unless the user moves the zone away from the
corner
of the drawing palette. Then the zone origin will have some arbitrary value
per the location on the screen. But that should not be a problem, the
surface
coordinates should be correct.
Mike
On 12 Apr 2007 at 14:32, aboyemeplus wrote:
>
>
> Hi everyone,
>
> I am trying to use BLAST's user interface (HBLC) to generate
> building geometry data to be translated into EnergyPlus input file.
> While the data translation works out fine, I am having problems
> reconciling the visual geometry in HBLC with the corresponding zone
> and wall coordinates indicated in the ".BS" and ".BIN" files. In
> other words, what I see on the HBLC screen is totally different from
> what is generated in terms of coordinates, especially when it comes
> to defining zone origins. As a result, I am ending up doing time
> consuming editing of the "BIN" file before translating the data into
> EnergyPlus.
> I realize that this is not an EnergyPlus issue, but I'd really
> appreciate help from anyone with BLAST experience. I was unable to
> find much information regarding the use of the GUI in the BLAST
> documentation.
>
> Thank you in advance for your support.
>
> Merid
>
>
>
>
> The primary EnergyPlus web site is found at:
> http://www.energypl <http://www.energyplus.gov> us.gov
>
> The group web site is:
> http://groups. <http://groups.yahoo.com/group/EnergyPlus_Support/>
yahoo.com/group/EnergyPlus_Support/
>
> Attachments are not allowed -- please post any files to the appropriate
folder
> in the Files area of the Support Web Site.
>
> EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the
> Documentation link and press the "search" button.
>
> Yahoo! Groups Links
>
>
>
>
>
========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support
EnergyPlus-Support@ <mailto:EnergyPlus-Support%40gard.com> gard.com
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