Dialux Tutorial
Visual Building Performance Simulation – Summerterm 2014 Author: Univ.Ass. DI. Ulrich Pont Comments are appreciated:
[email protected] Preversions: WS2009/2010 – based on Dialux V.4.7.5. WS2010/2011 – based on Dialux V.4.8.0. WS2011/2012 – based on Dialux V.4.9.4. SS2013 – based on Dialux V.4.11.0.0. SS2014 – based on Dialux 4.12.0.0. This is a draft document. No unauthorized reproduction or publication is allowed.
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Aim of this Tutorial: Finding out / using the essentials of DIALUX for calculation and planning of artificial lighting systems and performing basic daylight calculations via simulation of a simple room / volume. This Tutorial is based on Dialux-Version 4.12.0.0., One of the simulated spaces is the department’s seminarroom (plans 1:50 in TUWEL).
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This tutorial was written on a machine with Windows 7 Professional, 64 bit. There may be some differences using Dialux in other Versions or on other Platforms.
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Abbreviations used: LMC – left mouse click, RMC – right mouse click, DC – double left click, MW – Mouse Wheel, M - Mouse
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Note: This semester (Summerterm 2014) we will work both with Dialux v.4.12. and Dialux Eco 3.1. The reason for this is that Dialux Evo does not yet offer some fundamental features for lighting evaluation, while the traditional Dialux on the long run won’t be continued.
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Table of Content: Th
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1. Installation of the program, Start of the program, and getting used to the graphical user interface of Dialux. 2. Tutorial Outline 3. Generating a basic room / Geometry entry 3b. Importing Geometry from CAD 4. Setting Parameters 5. Adding luminaires & First Calculation 5b. Advanced Techniques: Control Groups Auto-Determinating of necessary luminaires Daylight in Dialux 6. Simulation & Analysis
1. Installation of the program, Start of the program, and getting used to the graphical user interface of Dialux. 1.1. Getting the program: Open any browser (Mozilla, Internet Explorer, etc) and open www.dial.de Go to Sprache to change it to English.
Figure 1: Website Dialux
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Go to the dropdown “Dialux” and “Download”:
Figure 2: Website Dialux
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Choose Dialux 4.12.0.0. for Download (and Dialux ECO 3.1. as well)
Figure 3: Website Dialux – Download Menu
Follow all steps of the installation.
1.2. Opening the program: Options for opening the tool: • Icon / Desktop • Start / Dialux / Dialux 4.12. ( NOT: 4.12. Light) • Doubleclicking on any existing dialux file.
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Starting Dialogue (German):
Figure 4: Starting Menu (German)
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Choose “Neues Innenprojekt”.; Click on OK in the open dialogue Changing Language to English (if necessary): Datei / Einstellungen / Allgemeine Optionen / Globales Choose English (United Kingdom)
Figure 5 & 6: Starting Menu; Settings Menu.
Note: It is necessary to restart the software, for change of language!
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Starting Dialogue (English):
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Figure 7 & 8: Starting Menu (English); Starting Menu
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Options (Fig. 7.): - New Interior Project (we will focus on this) LMC - New Exterior Project (will not be covered in this lecture) - New Street Project (will not be covered in this lecture) - DIALux Wizards (for easy and quick projects, but very reduced in options) - Open Last Project - Open Project A default room is created. You can change the coordinates, the length, height and width of the this default room. (Fig. 8)
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1.3. graphical user interface of Dialux.
CAD-WINDOW GUID E
PROJECT MANAGER WITH INSPECTOR Figure 9: Work Space in Dialux.
2. Tutorial Outline The tutorial is the department’s seminar room. Plans and information are provided in TUWEL. 3. Generating a basic room / Geometry entry NOTE: The suggested default room in the above shown dialogue (Fig.8) is a cuboid room 5,4 m long, 3,6 m wide, 2,8 m high. The measures can be changed via Input on the keyboard. (Finish with ok).
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Change the dimensions of the room to 9,50 m length, 6,40 m width and 4 m height, and apply with ok. These are the basic outline measurements for the BPI- seminar-room. After you click on Ok the Menu disappears and is changed to the “General”-Slide. If you did a mistake or if you want to change the Geometry once again, please RMC on room1 and choose Edit Room Geometry and the Geometry Slide appears again.
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Figure 10: Edit - Dialogue
Figure 11: 3D-View
Figure 12: Rotate Command
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To have a 3d-look at this basic room hit the symbol (3D Standard View). NOTE: A 3D view is opened – note that it is a new slide. You can now easily switch between planar view and 3D view (Fig. 11). There are also other views available (side View, Front View).
To pan around in the 3D-view you can hold the MW and move M around. To rotate the view you can use the rotate Symbol (Fig.12.). In this menu bar you can move, rotate, roam and increase/decrease your view, or switch back to “Arrow”.
Figure 13: Registration Cards (3D View)
NOTE: To access the different building parts (Walls, Floor, Ceiling), LMC on Room1 and see in the expanded menu “Workplane”, “Floor”, “Ceiling” and a Folder with the Wall Surfaces. (Figure 13) If you click on Ceiling, Floor, or one of the Walls, the building part is marked red in the 3D View. NOTE: What is meant with workplane? (Figure 14) The workplane is a defined invisible plane in your room which means the surface of the tables you will work on. In standard offices the height of the tables is between 70 and 85cms.
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Please choose 73 cm for our example.
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Figure 15: Workplane Setting
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Figure 14: Tree-Structure
NOTE: We need to modify the geometry of our Seminar-room (window niches, glass wall): To do so, RMC in the planar view of the room and choose Edit Room Geometry (Fig. 16).
Figure 17: Insert Point Figure 16: Edit Room Geometry
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y-Coordinate 0 0 0 5,7 5,7 6,4 6,4 5,7 5,7 6,4 6,4 5,7 5,7 6,4 6,4 5,7 5,7
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x-Coordinate 0 7,5 9,5 9,5 9 9 7 7 5,75 5,75 3,75 3,75 2,5 2,5 0,4 0,4 0
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Point 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
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Figure 18 & 19: Geometry
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In the plan view and in the 3D View the points 1 – 4 are now shown. To enter a new point, RMC and choose Insert Point (Fig. 17.). As you can see, in the list of point geometry, you can change the x and y-values of your points. Please create the room geometry according to the table of points on next page– the resulting room / point list should look like this (Fig. 18 – 21):
Figure 20 & 21: Point List & Glas Wall
Because you have now a higher number of walls, you should use the possibility of renaming walls – for example the glass part of the inside wall should be renamed Glass Wall (that is the part of the wall with the sliding doors). It is also recommendable to name the front and back wall.
The window niches do not cover the whole height of the room – so we need to enter something to cover the upper and lower part. Choose the slider objects and choose Extrusion Object (Fig.22)
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Drag and Drop it in the Drawing Area. Then adapt it via drag and drop to the Window niche. Then change the geometry settings (Size H = 0.65; Position Z=3.350). Please do this for all three window niches. (Fig. 23-26)
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Figure 22: Extrusion Object Insertation
Figure 23 – 26: Extrusion Object Positioning
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Please model the window sils the same way. Measures can be read out in the plans. The Model should look like this in the end (Fig 27.):
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Figure 27: Model including niches and sils.
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NOTE: Now you need to add the windows, the door, and a glass plate for representing the glass wall.
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To enter the windows, please got to slide objects, choose windows and doors, and drag and drop a window to one of the window niches (Fig 28-. 29.).
Figure 28: Adding Windows
Then go back to slide “project”, choose the window, go to slide Position/Size and enter the sil height 0,85m, the height 2,5m and the width 2m (2,1 m for one of the windows – please refer to the plans). Please complete on your own all three windows. NOTE: The windows are set as hierarchical child objects to the walls they are in.
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Figure 29: Modifying Windows
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NOTE: The structure of the windows and their visual parameters will be set later.
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NOTE: To correctly simulate the glass wall, you have to enter a glass plate. This can be done with slide objects, standard elements, glass plate (Fig. 30).
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Please drag and drop the glass wall to the part of the room where the glass wall is situated.
Figure 30: Glass Wall
To get the glass plate in the right size and position please change the settings in the slider project:
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The door can be entered like the windows (Fig 31.).
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Figure 31 & 32: Input of Doors & Tree Structure
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To finish the Room Geometry – please add the furniture – as shown in the plans (White board, tables, chairs, drawers).
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Multiplying, Combining & Moving Elements (shown on example of tables)
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We want to copy the marked table for a row of tables (3 tables in a row): Mark the table and RMC, choose “Copy Along a Line” (1), set the copy line as wished (2, in our case you have to turn it 90°), set the copy parameters (3, in our case we want to have 2 copy, and distance between copies should be 1,6 m) and click on copy (4). (Screen Shots on next page) 1
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Figure 33 & 34: Copying along a line
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Figure 35 & 36: Copying along a line
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To combine elements – select the First Element with LMC click, then select every further element you want to combine with SHIFT+LMC, then RMC and choose combine.
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Figure 37: Combining elements
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To move an object controlled, select it, go to the geometry slide in the Project Manager and change the geometry data to your wished values.
Figure 38: Controlled Movement
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NOTE: Normally the objects gravity centre (the cross) is the referenced point. You can change this in the slide origin. This can be useful for exact placement of objects with the mouse
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Figure 39: Controlled Movement
3b. Importing Geometry from CAD A. Using a DWG-File as Underlying sketch (using the interior scene / our seminarroom)
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Figure 40: Import of DWG/DXF-Files
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Please open Dialux 4.7 (DO NOT open Dialux Light 4.7) Choose “New Interior Project” Click on “OK” in the Project Manager, to assign the default geometry Choose File / Import / DWG or DXF File
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Go Step by Step through the Import-Wizard (Fig 41 – 44)
Figure 41: Import of DWG/DXF-Files
NOTE: It is very important to determine the correct Units in the Wizard. Please set them to centimetre (as SEM_BPI_UNDERLAY.dwg is drawn in centimetre units), see Figure 42.
Figure 42: Adaption of DWG/DXF-Files
Figure 43: Import Point
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NOTE: You can determine the origin for the drawing. Choose “Global coordinates system” (Figure 43 & 44)
Figure 44: Finish
NOTE: The CAD-Drawing is now inserted, and looks like this (Figure 45):
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Figure 45: Set Points
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NOTE: Now you have to adapt the geometry of this simple room to the Underlay. This can be done with RMC on the drawing and “Edit Room Geometry”. NOTE: You can now snap to the points in the underlying CAD-Drawing. (Figure 45, 46) To get the room in the shape of the drawing, you at first should set the corner points, and then enter some more points for building the room outlines. (See part 1 of the Tutorial)
Figure 46: Adapted Geometry
NOTE: You can use the CAD-drawing as a background image in the 3D view. Usually it is recommended to use the option Represent 2D projection of dwg / dxf in 3D view from the Property Page.
Figure 47: Layer Selection
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Choose View/DWG or DXF properties/Layer selection
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Check the box Display 2D projection in 3D Window (Scale slide)
Figure 48&49: 3D Projection
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NOTE: You can display or hide the dwg / dxf background from the View Menu:
Figure 50: Hide Settings.
4. Setting Parameters
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NOTE: To determine the important reflectance values for all building parts (ceilings, floors, walls), extend the Room1 – Explorer-Menu, and click on one of the building elements. In the 3d view the marked building part will turn red (unless you can not see the building part due to your perspective. You can then rotate the 3D view, and should see the marked building part). In the slide material you can now determine the reflection and some other values about your building part. NOTE: There is a set of Standard-Materials and also Standard-Textures, which are delivered with all there Figure 51: Settings in Material Editior necessary values. The textures can be found in the Project Manager under Colours. Important: If you choose the reflectance first and then a Texture, your reflectance will be overwritten with the reflectance of the texture. It is better to do it the other way round, first the texture, then the setting of the reflectance, transparency and mirror effect. Please choose the values like in the following table
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Surface reflection measurements Seminar room
Reflectance
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Texture
Transparency
Mirror Effect
ρ [-] 0,78
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Glass wall
Glass plate, Plaster
0,45*)
0,45**)
0,70**)
White board
Choose of Furniture
0,78
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Plaster
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Wall/Ceiling
Strip Flooring Beach Wood
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Table
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Chairs
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Door
Window recess (niches) Windows
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0,54
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Choose of Furniture
0,63
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Choose of Furniture
0,30
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Choose of Furniture
0,30
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Door, plastic white
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Drawer wood Drawer door
0,36
Choose of Furniture
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Floor
0,82
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Plaster
0,78
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Window Wood***)
0,15
0,85
0,60
*) Reflectance of the Wall behind the glass plate **) Transparancey Settings & Mirror Effect of the glass plate. ***) You have to scale the window-texture size to fit to the window (in the Project Manager, under Project, there choose the windows and go to slide Texture) PRACTICAL NOTE: If you want to make a comparison of your simulation with real measured values, it is a good idea to determine the reflectance values of your building parts experimentally. This can be done with measurement of Illuminance E in Lux and Luminance L in cd/m² and the formula: L * Pi / E = ρ. The values we use in this Tutorial were measured before, and will be proofed in the lectures Building Diagnostics & Building Diagnostics Laboratory.
Dialux Tutorial
Visual Building Performance Simulation – Summerterm 2014 Author: Univ.Ass. DI. Ulrich Pont Comments are appreciated:
[email protected] Preversions: WS2009/2010 – based on Dialux V.4.7.5. WS2010/2011 – based on Dialux V.4.8.0. WS2011/2012 – based on Dialux V.4.9.4. SS2013 – based on Dialux V.4.11.0.0. SS2014 – based on Dialux 4.12.0.0. This is a draft document. No unauthorized reproduction or publication is allowed.
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Aim of this Tutorial: Finding out / using the essentials of DIALUX for calculation and planning of artificial lighting systems and performing basic daylight calculations via simulation of a simple room / volume. This Tutorial is based on Dialux-Version 4.12.0.0., One of the simulated spaces is the department’s seminarroom (plans 1:50 in TUWEL).
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This tutorial was written on a machine with Windows 7 Professional, 64 bit. There may be some differences using Dialux in other Versions or on other Platforms.
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Abbreviations used: LMC – left mouse click, RMC – right mouse click, DC – double left click, MW – Mouse Wheel, M - Mouse
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Note: This semester (Summerterm 2014) we will work both with Dialux v.4.12. and Dialux Eco 3.1. The reason for this is that Dialux Evo does not yet offer some fundamental features for lighting evaluation, while the traditional Dialux on the long run won’t be continued.
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Table of Content: Th
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1. Installation of the program, Start of the program, and getting used to the graphical user interface of Dialux. 2. Tutorial Outline 3. Generating a basic room / Geometry entry 3b. Importing Geometry from CAD 4. Setting Parameters 5. Adding luminaires & First Calculation 5b. Advanced Techniques: Control Groups Auto-Determinating of necessary luminaires Daylight in Dialux 6. Simulation & Analysis
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5. Adding Luminaires NOTE: The next Step is the addition of some luminaires. (There is a standard option of calculating the necessary luminaires for certain illuminances, which will dealt with in Part 5b.) First Step is to find the Luminaires for our room. BPI Seminar – Room is lighted by TRILUX Lightings. Please open the TRILUX-Catalogue: Luminaire Selection / Dialux Catalogs / Choos Trilux (If not downloaded until yet - the Catalog needs to be downloaded and installed)
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Search for 5051 in the TRILUX Catalog and choose “TRILUX 5051AL-RSX/I/2x49 E” and say Use
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Now to enter one or several luminaires, click RMC on Room1 / Insert Luminaires / Individual Luminaire.
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The chosen Luminaire should now be available in the Luminaire Dropdown Menu. A grey frame appears in the Drawing Area, which can be moved to position your luminaire.
Choose Insert, and the Luminaire will be inserted.
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You can now choose the inserted luminaire in your project Manager, and change position also numerically.
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NOTE: The number of Luminaires is shown twice in the project manager: One time under “Luminaires Used”, the other time in the Folder “Luminaires” (under “Individual Luminaires”). Please multiply and position the luminaires as shown in the plan! (Hint: Use the methods “Copy along a line” from First Part of Tutorial!). In the end, your model should look like this:
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NOTE: This was in very short the adding of luminaires to your Dialux-Model. Of course there are more convenient and advanced methods to add luminaires in a more systematic way. (See 3b).
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First Calculation: To do a quick first calculation Choose Output / Start Calculation!
Choose the following options in the pop-up
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The Calculation starts….
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After finished calculation the 3D view shows obviously some lighting & shading.
For first results choose “Output”-Slide in the Project Manager
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Then scroll down to Room1/Room Surfaces/Workplane
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DC now on each of the options (Isolines E / Greyscale E / Value Chart E / Table E). This 4 different outputs all show the Illuminance on the workplane level (in our case the surface of our tables, 73 cm above floor)
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Just RMC on Room 1 (in the Explorer-like menu) and select Insert Luminaires and Field Arrangement, to create a field of luminaires. A new menu appears above the Explorer window.
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Choose – if possible the “Dial 3 BS 900-Leuchte” at Luminaire and “T26 36 W” at Lamp.
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Choose the slide “Mounting” – where you can insert several parameters. Very important is the “Rough Calculation”, where you can enter the necessary E (illuminance) in lux. By default it is at 500 lux, which is the standard-value for working places in offices. Change this value to 750 lux. The necessary luminaires will be calculated for the working plane (in our case 0,85 m by default, which for office standards is rather high) if you click on suggestion. The suggested rows and luminaires per row will change. Click on insert – and the luminaires will be set in your room.
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Now we have inserted the programs suggestions for an illuminance of 750 lux on the working plane (0,85m height, in our example). Lets proof this suggestion!
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Click on the DropDown “Output” and choose “Start Calculation”
Please choose the following options in the opening window: After the calculation, the appearance of the 3D view has changed… - obviously the program pictures the illuminance on the different building parts.
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There are now some options to get accurate information about illuminance out of the program. A very convenient report can be gathered on this way: Choose output a the slides on the lower left of your screen, open “Room1”, “Room Surfaces”, “Workplane” and doubleclick on each of the four entries (“Isolines”, “Greyscale”, “Value chart”, “Table”). Your Isoline-Report should look like this:
As a matter of fact, you won’t calculate empty rooms in most of your architectural practice, we should now start to fill the room with furniture, doors and windows…
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Go to the objects slider on the lower left side, and choose Object Files, Indoor, furniture, Design Classics and choose Marcel Breuers Wasily Chair. How to get the chair into our room? Best go to the planar view of our room, and simple drag and drop the chair to the room.
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You will be asked instantlnotified, that your calculation results are now not correct anymore, because you changed the settings (with inserting “Wasily”). Click on yes.
How to move the furniture and objects you insert? This is quite easy, just go the plan view, click on your inserted object, that you want to move, and with LMC on the cross you can drag the object around, while LMC on the blue dot you can rotate your object. For exact positioning, it is also possible to use the Geometry boxes in the Geometry menu.
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Insert some other furniture and office furniture!
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Task: Now enter different furniture and room objects, just as ramps, columns, etc… in your room.
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Maybe your room now looks like this:
Recalculate via Output and Start Calculation. Note that the calculation time will increase the more objects you have in use.
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After the calculation your results may like look this:
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Exporting the image of your room can done via POV-Ray – this is a free-ware Raytracer program included in Dialux. Click on the “Raytracer POV Ray” Icon, and set your wished preferences in the following dialogue (the larger the picture, the longer the rendering will need). When rendering is done, the picture will simply open in a graphic-program (f.e. photoshop or paint)
5b. Advanced Techniques 5B_1. Auto – Determining of necessary Luminaires NOTE: This explanation starts after Setting the parameters-Status of the Tutorial-Model. You should not have entered any luminaires into the model.
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RMC on Room1 in the Project manager, choose Insert Luminaires and Field Arrangement
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Take care, that the same luminaire as in Part 3 is chosen (TRILUX 5051Al-RSX/I/2x49 E). Choose the slide “Mounting”. In the lower part of the window there is a “Rough Suggestion” Option, where you can enter the wished Illuminance for the workplane.
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Choose the pictured settings: Set the rough calculation E to 750 lux, and the luminaire mounting to User Defined (Suspension Height 1m, Mounting height 3m, Height 2.23). Then click on suggestion, and then on insert. 3 rows with 4 luminaires each should be inserted now.
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If you now start a calculation (Output / Start Calculation), you will find, that the majority of the workplane will have 750 lx or more as illuminance.
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Please try on your own the circle arrangement and line arrangement of lights (750 lx is the deserved value for illuminance on the working plane)
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Results should look like this (Cirlce Arrangement):
What can easily be seen, is that the field arrangement has more luminaires (3 rows x 4 luminaires =12) than the circle arrangement (10 luminaires), but still has higher values for illuminance than the circle arrangement. NOTE: Please be careful with this feature! If you set for example the necessary Illuminance to 1500 and Circle Arrangement, a great number of luminaires is necessary, and if you Insert this suggestion – you will find the luminaires intersecting with each other!!! (which of course can not work in reality!)
5B_2. Daylight in Dialux & Control Groups 5B_2_1 – Daylight in Dialux
RMC on Room1 and choose “Insert light scene”. if you get asked to discard the calculation results, say yes.
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NOTE: This explanation starts from the original tutorial after Point 3.
In the Project manager, LMC on light Scene 1, go to daylight properties and choose “take daylight into account during calculation” and set the date to 25.11.2009, 13:30) NOTE: If the option “Calculate Daylight factor” is set, all your artificial light sources will be dimmed to 0%, meaning you will just calculate daylight!!!
NOTE: You have to set the Location of Room1 in the Project Manager (LMC on Project 1), slide location.
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Set the location of the project to Vienna.
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NOTE: You have set the North alignment of the y-axis
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Look at the graphic below, and enter the correct North Offset
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NOTE: The north Alignment is dependent on the x and y-axis position in your dialux model. Take care to figure it out correctly, otherwise your results will be wrong.
The north alignment in our case is about 337° (360 – 23). NOTE: Before we now start a calculation run, please check the window settings (Project manager, Wall Surfaces, child objects of Wall 6, 10, 14). They should be set as in the graphic
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After all this settings, we can now make a calculation run, to see the lighting levels of our seminar room with daylight on 25th Nov. 13:00. Output / Start Calculation
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Your results will look something like this:
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NOTE: Because we did set “Calculate Daylight factor” in the settings of our light scene, we get also the daylight factor tables and graphs as a result:
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Concerning daylight factors please read the following text: ___
Daylight Factors
Defining the daylight factor
The daylight factor (DF) is a very common and easy to use measure for the subjective daylight quality in a room. It describes the ratio of outside illuminance over inside illuminance, expressed in per cent. The higher the DF, the more natural light is available in the room. It is expressed as such: DF = 100 * Ein / Eext Ein inside illuminance at a fixed point Eext outside horizontal illuminance under an overcast (CIE sky) or uniform sky. The Ein illuminance can be considered as the sum of three different illuminances:
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the direct iluminance if the sky is visible from the considered point (ED) the illuminance due to the reflexions on the outside environment (EER) the illuminance due to the reflexions on the inside surfaces (EIR) al
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Hence, the daylight factor can be expressed as the sum of three component:
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DF = DC + ERC + IRC DC direct component ERC externally reflected component IRC internally reflected component
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A daylight factor can be measured for a specific point or expressed as an average. The latter is the arithmetic mean of the sum of point measurements taken at a height of 0.85 m in a grid covering the whole floor area of the room. Different countries have different regulations and may require the use of point or average measurements.
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Rooms with an average DF of 2% are considered daylit. However, a room is only perceived as well daylit when the DF is above 5%. Daylight factors are always measured under an overcast sky or in an artificial sky which simulates a standard CIE overcast sky. DF and appearance, thermal performance Average Appearance DF < 2% room looks gloomy 2% to 5%
> 5%
Energy implications Electric lighting needed most of the day
Predominantly daylit appearance, Good balance between lighting and thermal but supplementary artificial aspects lighting is needed. Daytime electric lightin rarely needed, but potential for thermal problems due to Room appears stongly daylit overheating in summer and heat losses in winter
Our average daylight factor on the workplane is 3.02. If we now follow the upstanding table, we need some supplementary artificial lighting. The Illuminance Levels on the workplane are not sufficient in the seminar room. That is why, we will now implement some additional artificial light: 5B_2_2 Control Groups
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NOTE: Sometimes it is necessary to turn one only some of the lighting sources of a room to provide proper lighting in or without combination of Daylight. We will now set three control groups in the seminarroom artificial lighting, one for each row of lights.
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RMC on Light Scene 1 / Insert Control Group / New Control Group. Repeat this twice. You have now set three control groups. These control groups do appear in the Project Manager twice – one time in the Light scene 1, one time in a folder named control gropus
Now go to the folder luminaires, where there should be 9 Folders named “individual Luminaire”.
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NOTE: If you select one of these luminaires, it is highlighted in the plan and 3D views.
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If you RMC on one of the luminaires in the Project Manager, there is a option “Add to control Group”. Please add the luminaires to your control groups following this scheme:
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Control Group 3
Control Group 2
Control Group 1
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Now set the dimming levels in Control Groups 2 & 3 to 0%, (Light Scene 1 / LMC on Control Group 2 and Control Group 3)
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To calculate now the daylight impact + Control Group 3, you have to check out “Calculate Daylight Factors” in Light scene 1 / Daylight properties
NOTE: The sky models can now be chosen – Clear Sky, Overcast Sky and Mixed Sky.
Please choose overcast sky (“worst case scenario”)
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NOTE: In the slide Dimming Values you can control the dimming values / check if they are correctly set! You can see in the 3D Model if the Luminaires are on 100% or on 0%.
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The dimming levels can additionally be shown in the 3D view:
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Please start the Calculation now! Output / Start Calculation
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As you can see in the Isoline-Diagram, the Illuminance is now slightly better than before… Work with different dimming levels of your control groups now, and try to optimize the lighting situation on the workplane. NOTE: In reality some buildings will work with this combination of Daylight and Artificial Light Example: UNIQA-Tower Vienna (Combination of Shading, Daylight and Control Groups for Artificial Lights)
6. Simulation and Analysis
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LENI = Lighting Energy Numeric Indicator – Part of the Primary Energy Demand of a Building!
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Calculation:
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How to calculate an Energy Evaluation / the LENI-Value with DIALUX? First the principle way (without changing any settings): Paste / Energy Evaluation
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RMC on Energy Evaluation / “create one energy evaluation room per room in Dialux…”
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Now the room is linked with the energy evaluation. Check out the Assessment Zones
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NOTE: All this settings will influence your energy evaluation! For a real simulation and calculation all this values should be thought about, and documented.
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HOW TO GET RESULTS: Output / Start Energy Evaluation
Output / Energy Evaluation / Summary
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