RE: [EnergyPlus_Support] Tutorial example in instruction Exercise 1B.

Just to show those who has not seen Exercise 1B in the Getting Started Document Tutorial.

Exercise 1B. Add Windows

Objective: Learn how to add materials, constructions, and a surface using 3-D coordinates.

1) In EP-Launch, with input file Exercise1A.idf still selected, press “Edit � IDF Editor”. This wwill open Exercise1A.idf in the IDF Editor, a tool that assists in editing EnergyPlus input files (idf).

2) In IDF Editor, select File  Save Options . . . and set “Saved Order” to “Original with New at Top”, and “Special Format for Some Objects” to “Yes.” Check the “Set as Default” box. (This will place you new solution on top of the file. as in Exercise 1B -solution.idf)

3) In IDF Editor, Select File  Save As . . . and save this file as Exercise1B.idf.

4) Create the construction definition for the windows which are double-pane clear gas with an air space:
 Using File  Open Dataset, (This is new in Version 4) open the window glass materials dataset file,
WindowGlassMaterials.idf
 Scroll down the Class list and select “WindowMaterial:Glazing”.
Hint: In IDF Editor, View  Show Classes with Objects Only (or ctl-L) will hide all empty object types from the class list.
 Locate the object which defines the material properties for “CLEAR 6MM”. Select this
object (by clicking on the column heading).
 Using Edit  Copy Object (or the toolbar button, or ctl-C), copy this object.
 Switch windows to file Exercise1B.idf and paste the window material into this file. (Verify
that is had been added by going to WindowMaterial:Glazing to view the object.)
 Open dataset file WindowGasMaterials.idf.
 Locate “AIR 3MM”, copy it and paste it into Exercise1B.idf.
 In Exercise1B.idf, select the “Construction” class. There are three constructions predefined
for the walls, roof, and floor.
 Press “New Obj” to create a new blank Construction object.
 Name this new construction “DOUBLE PANE WINDOW”.
 Use the pulldown list to select “CLEAR 6MM” for the outside layer, then press “Enter” or
“Return” to save this entry and move to the next field.
 Select “AIR 3MM” for Layer 2, and “CLEAR 6MM” for Layer 3.

5) Add the east window (3m wide by 2m high, centered on wall, see the drawing in Figure 11 to determine coordinates):
 Select “FenestrationSurface:Detailed” class.
 Add a new object named “EAST WINDOW”.
 Set the remaining fields as listed:
Surface Type = Window
Construction Name of the Surface = DOUBLE PANE WINDOW
Base Surface Name = ZONE SURFACE EAST
OutsideFaceEnvironment Object = <blank>
View Factor to Ground = autocalculate
Name of shading control = <blank>
WindowFrameAndDivider Name = <blank>
Multiplier = 1
Number of Surface Vertex Groups = 4
Vertex coordinates = as determined from the drawing Figure 11. Coordinates in this input are in World Coordinates (all relative to the global origin of 0,0,0). Coordinates are specified as viewed from the outside of the surface, using the rules specified in the SurfaceGeometry object.

6) Add the west window, similar to the east window.

7) Add a new Output:Surfaces:List object, type= Details. This report produces a list of all surfaces in the eio output summarizing area, azimuth, tilt, etc.

8) Save and close the IDF file, select Exercise1B.idf in EP-Launch, run the simulation and view outputs.
 Always review the err file for errors and warnings. Fix problems if needed and re-run.
 Are the windows in the right place in the dxf drawing file. (Use the Drawing File button or
select the DXF file from View  Single File or from the Quick-Open panel).
 Review the surface details report in the eio file, search for “Zone/Shading Surfaces” to
find this report. (Use the Text Output button, Quick Open “eio” button, or select from the
single file menu, or use F7). This report is easier to read by pasting this section into a
spreadsheet and using the text to columns function with comma as a delimiter).
 Open the csv output file and compare the heating and cooling loads with the results from
Exercise1A.csv.

If the person has reach (7) by doing the exercise step by step, the question on what editor to use should not have arisen.

When you reach (7), you are still in IDFeditor.

All the class names are listed on the left pane window.

Go to Edit and 'find'. Type in the class name you want (just part of it may do) say, Output:surface click 'FInd'. You will be directed to that class group.

The Output:surfaces:List is still empty. Click on that and 'New object'.

This is the same as you did with the other object earlier on. What you did not know is that you can use Edit and Find as in any other Window applications.

'Details' is one of the available Report Types. If you click the blue area, there will be a down triangle on the right hand side. Click that for the drop down menu, and the 'details' will appear as one of the choices. You can add more objects with the other choices. As you add more objects, the number on the left pane will increase for that class.

If you wanted to know what are the other report types, go and read it from the IO Manual, using search.

So, it is not that difficult, if you follow the tutorial and get a few tips.

Dr. Li

To: EnergyPlus_Support@yahoogroups.com
From: linda@fortlawrie.com
Date: Thu, 29 Oct 2009 19:51:43 -0600
Subject: Re: [EnergyPlus_Support] Tutorial example in instruction Exercise 1B.

You use the IDF Editor. or, a text editor.

On Fri, 30 Oct 2009 01:37:25 -0000, "rwelch4" <rwelch4@earthlink.net>
wrote:
> Just downloaded Energyplus. Starting using the written tutorials in the
> instructions to learn how to use this. Under instruction 7 in exercise
1b
> it says "add new Output:Surfaces:List object, type=details..." I can't
> find where to do this. The Instructions are a little vague. Also is
there
> any online tutorials or better tutorials?
>
>

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