Oct 2009 Introduction to EnergyPlus - Part 13. Copyright 2009 U.S.D.O.E. 1

Part 13 – OpenStudio

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Part 13 Outline

New File TemplateCreating ZonesSlides courtesy of Simge Andolsun, Energy Systems Laboratory,Texas A&M University

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New File Template

NewFileTemplate.idfUsed as starting point when “New” is selected in OpenStudioLocated in C:\Program Files\Google\Google SketchUp 7\Plugins\OpenStudioEdit as desired to add new materials, constructions, or other objects.

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New File Template

Default contents

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OpenStudio

1. Open an e+ zone

2. Double‐click on the SketchUp screen, you should be seeing a “+” sign and a prism defined by black dotted lines.

3. Make sure that the prism defined by black dotted lines is always open while you are using OpenStudio.

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OpenStudio

1. Select the rectangle tool.2. Draw a rectangle by single clicking on a point and dragging the mouse to one direction.

4. Select push/pull tool.

5. Select the rectangle on the ground by clicking on it.

3. Enter the dimensions of the rectangle from the keyboard.

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OpenStudio

1. Pull the selected surface up with push/pull tool

4. The colors of the surfaces should turn from gray tones to brown tones.

2. Enter the height of the prism while pulling the surface up.

3. Press Enter

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OpenStudio

2. Right‐click on a surface.

3. Select OpenStudio/Object Info.

4. Check each feature, change them if necessary.

5. Do the same thing for all the surfaces you can see.

1

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OpenStudio

4. Right‐click on the surfaces that you can see now & check their properties.

2. Rotate the object by clicking on a point and sliding the mouse in opposite direction

3 1. To see the back surfaces, click on Orbit tool

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OpenStudio

For the surfaces blocked by other surfaces

2. Select Hide to hide the surface.

1. Right‐click on a blocking surface

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OpenStudio

Now you can see the inner surfaces

1. Right‐click on the floor & check its properties

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OpenStudio1

2 3

To unhide the blocking surfaces …

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OpenStudio

…and the hidden surface comes back !!!

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OpenStudio

2

1

3

To save the EnergyPlus input file …

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OpenStudio

If you accidentally click on somewhere on the screen outside of the box with dotted lines, the box disappears. If this happens …

Find the plus sign you located to define the e+ zone in the beginning or select a surface in that zone & double‐click on either one of them to reopen the box. Otherwise the surfaces you definefrom that point on would not be read by e+ !!!!

A warning …

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OpenStudio

1

Opening a second zone

2. Click somewhere on the screen to locate the plus sign of the new zone. This will turn the other zone into green and will make it unselectable.

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OpenStudio

1

2. Draw the floor of the upper new zone with the rectangle tool.

3. Enter the dimensions of the rectangular floor as 10m x 40m.

4. Press ENTER

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OpenStudio

1. New floor looks like this when completed.

3. Select the floor surface to extrude!

2

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OpenStudio

1. Pull the surface up

2. Enter the height of the surface = 3m

3. Press ENTER

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OpenStudio

1. Color of the surfaces turns into brown after ENTER is hit.

3. Right‐click on the exterior surfaces and check their features.

2

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OpenStudio

3

4. Double‐click on any of the surfaces in the first zone.

Use the Orbit & Pan tools to obtain this view

1 2

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OpenStudio

2

1. This will activate the first zone.

3. Draw a line to separate the terrace from the interzone surface.

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OpenStudio

1

2. Double‐click on any of the surfaces in the upper zone to activate the upper zone

3. Select the roof & the side wall

4

5

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OpenStudio

2

1. This will allow you to see the floor of the 2nd story

3. Draw a line that separates the cantilever surface from the interzone surface

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OpenStudio

1

Now we have three different surfaces: 1) a cantilever , 2) a terrace , 3) an interzonesurface.

2

3

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OpenStudio

1. Right‐click on the cantilever

2. Click on OpenStudio/Object Info to check its features

3

4. Make sure that the cantilever is defined as a FLOOR

5. Make sure that the cantilever is exposed to outside air. It is sun & wind exposed

6. EXTERIOR FLOOR

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OpenStudio

1. Double‐click on any surface in the 1st floor to activate the 1st zone

3. Click on OpenStudio/Object Info to check its features

4

5. Make sure that the terrace is defined as a ROOF

6. Make sure that the terrace is exposed to outside air. It is sun & wind exposed.

7. EXTERIOR ROOF2. Right‐click on the terrace

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OpenStudio

1. Double‐click on any surface in the 2nd floor to activate the zone

3. Click on OpenStudio/Object Info to check its features

4

5. Make sure that the interzone surface in the 2nd story is defined as a FLOOR.

6. Make sure that the interzone surface in the 2nd story faces a surface: Ceiling of the 1st floor (6496D9). This interzonesurface is neither sun nor wind exposed.

7. INTERIOR FLOOR 2. Right‐click on the interzonesurface

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OpenStudio

1. Double‐click on any surface in the 1st floor to activate the zone

3. Click on OpenStudio/Object Info to check its features

4

5. Make sure that the interzone surface in the 1st floor is defined as a CEILING.

6. Make sure that the interzone surface in the 1st floor faces a surface: Floor of the 2nd floor (FDF799). This interzonesurface is neither sun nor wind exposed.

7. INTERIOR CEILING2. Right‐click on the interzonesurface

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OpenStudio

2. Click on OpenStudio/Object Info to check its features

3

4. Make sure that all the exterior walls are defined as a wall.

5. Make sure that all the exterior walls face Outdoors and they are sun & wind exposed.

6. EXTERIOR WALL 1. Right‐click on an exterior surface

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OpenStudio

2. Click on OpenStudio/Object Info to check its features

3

4. Make sure that all the floors that sit on the ground are defined as a floor

5. Make sure that all the floors that sit on the ground face the Ground. They are neither sun nor wind exposed.

6. EXTERIOR FLOOR 1. Right‐click on the floor

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OpenStudio2

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1. Double‐click on any surface in the 2nd floor to activate the zone

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OpenStudio

… and all the surfaces come back.

1. Make sure you have saved the EnergyPlus input file.

2

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OpenStudio

…when it comes to windows & doors

2. Draw a rectangle on a wall surface. If it does not touch the floor, it is simulated as a WINDOW.

1

3. Draw another rectangle on another wall surface. If it touches the floor, it is simulated as a DOOR.

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OpenStudio

…shades?

2. Double‐click at a point closer to the window that needs a shade to open a shading zone.

1

3

4. Draw a 7.12m long 1m wide shade over the window using the rectangle tool.

5

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OpenStudio

1. Select the 1st floor

2. Right click on the zone to check its features

3. Record the name OpenStudioassigned for the 1st floor

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OpenStudio

1. Select the 2nd floor

2. Right click on the zone to check its features

3. Record the name OpenStudioassigned for the 2nd floor

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OpenStudio

1. Click on Open EnergyPlus input file

2. Open the EnergyPlus input file that was modified in IDFEditor.

3. Google SketchUp brings back the building

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OpenStudio

1. Single‐click on the 1st FLOOR

2. Click on OpenStudio/Object Info to check its features

3. Realize that the zone name is different now! It is the zone name you assigned in the IDFEditor!

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OpenStudio

1. Single‐click on the 2nd FLOOR

2. Click on OpenStudio/Object Info to check its features

3. Realize that the zone name is different now! It is the zone name you assigned in the IDFEditor!