SD or DD

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To all:

I am modeling an existing building for an energy audit in NY. I am not sure
if I should use the SD or DD Wizard. Does anybody have any advise?

Thank you,

Yehuda

Yehuda Israel's picture
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Joined: 2011-09-30
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Yehuda:

To be very clear:

The SD and DD Wizard generally give the same level of detail, with a few exceptions:

1) SD Wizard is for a SINGLE floorplan. If you building is 100 stories, but all the same floor plan AND building usage, the SD Wizard is fine.

The DD Wizard allows both multiple floor plans and multiple buildings to be modelled in the same run. If your building has an L-shaped 1st floor, a smaller rectangular 2nd thru 5th floor, and a smaller yer square top floor, then use the DD Wizard.

2) The SD Wizard allows only TWO types of HVAC systems. The DD Wizard allows different systems to be attahced to different zones within any shell.

3) Neither Wizard allows for ANY changes to people, lts, equipment, or DHW profiles. Nor does it account for elevator loads. If these will matter to you, start in your appropriate Wizard, do a Save AS, call your new file by the same name with a -DETAIL at the end of the name. Then cahnge the -DETAIL to the Detailed Edit mode to complete the scheduling changes.

I hope this gives you some guidance.

John Aulbach

John Aulbach's picture
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Joined: 2011-09-30
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Hi Yehuda,

If I were in your shoes I would...

1. Start in the DD wizard and get my footprint, zones & custom window
placements in for the input.
2. Input any other "global" type inputs into the DD wizard (i.e. LPD
values, EPD values, and maybe my basic HVAC systems template to get me
started as I then will switch to DDedit mode...
3. "Save As" my wizard file with a new name (i.e. Project Name
Proposed-ddedit May XX.pd2)
4. In the new file, switch into DDedit mode and now focus my attention
& time into the detailed input data that I need to focus on from here on
out.

In general the wizards are a great place to start any model, but not really
too reliable nor do you have many options for detail input if you have
restricted your model to only the "wizards."

Feel free to contact me if you have any questions about how I would approach
the first steps of this model.

Cheers,
Pasha

Pasha Korber-Gonzalez's picture
Joined: 2011-09-30
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