Energy Efficiency Calculations with DIALux
October 26th, 2012
Afra Lucas
International Business
Development
U.S. Representative Office
DIAL GmbH
DIAL GmbH
Center for Building Technology and Lighting Design
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Light planning
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Building technology
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Software
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Seminars
www.dial.de
Chicago
Headquarters,
Lüdenscheid
Istanbu
l
Seoul
Mirano
Taiwan
Software development
PlugIns
The DIALux Concept
 DIALux serves as an advanced marketing tool
for lighting manufacturers
 Individual catalogs and products presentation
 DIALux is available free of charge
 More than half a Million users
www.dial.de
Advantages for manufacturers
• Constantly connects their products with their target audience
• Integration of products into the digital workflow of the lighting design
process
• Provide customers with energy efficiency calculations that DIALux
enables you to do
DIALux Features
 DIALux is free of charge
 DIALux enables Architects and Engineers to make a lighting design
based on real product data
 Lighting calculation, energy optimization and presentation
DIALux Features
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DIALux offers an import and export to DXF, DWG or gbXML (BIM)
Direct interface (STF) e.g. to Autodesk MEP, Revit, DDS, Allplan...
Drag & Drop of required drawings, texts, diagrams or further information into
CAD application or any other programs like Word, Power Point, ... .
DIALux works with PlugIns or simple IES files
Lighting design process
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Required illuminance level and other normative factors (foot-candles,
uniformity,…)
Minimum number of fittings
Checking
Appealing luminaire arrangement
the values
Maximum maintenance cycles
Minimum maintenance effort
Calculating
the results
Selecting
lamps
Using Design Software
An interative process until the
–optimum products
–the correct number of products and
–maintenance values are found
Placing
luminaires
Selecting
luminaires
Energetic optimization
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Estimation of energy demands in the lighting design phase
Energetic optimization, finding the best product
Software aided design and optimization
Consideration of all parameters including daylight and control
systems
 Calculating the energy costs
 Detection of the best solution
 Calculating the ROI
Automatic calculation of LENI
 Proven method to calculate the energy demands for lighting is
“LENI” LENI stands for “Lighting Energy Numeric Indicator”
 Most of the parameters needed for LENI calculation are already
given in a 3D lighting design
 Some parameters have to be determined by the user, of course with
the help of software:
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Daylight time usage / non daylight time usage
Availability of presence detection
Availability of daylight control
 The calculation is done by software, the user just defines the
parameters
Data available in the 3D design
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Location (lat., long.) ; Exterior obstruction, Building
Rooms, Stories, Windows, Roof lights
Luminaires, Total Power, Illuminance level
Daylit Zones
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On the right hand side the software displays the calculated daylit area
Due to visual feedback, the designer selects a daylight control system for
this area and the lighting system therein
In real time the new LENI value is calculated and it decreases from
21.84 kWh/(m² x a) to 18.06kWh/(m² x a) = - 4% in this simple example
Energetic optimization
Shop lighting example:
 Attract people, draw the attention to products, invite to stay, highlight the
products
good color rendering, emphasize important products
Identical light appearance
Tungsten Halogen
10° Beam
95W 1150lm
LED Spot
10° Beam
25W 1600lm
Different power consumption
LED
LENI: 111kWh/(a x m²)
Energy: 7277 kWh/a
Costs (7ct/kWh): $510
Tungsten
LENI: 262kWh/(a x m²)
Energy: 17,576kWh/a
Costs (7ct/kWh): $1230
DIALux for you?
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DIALux is free of charge
DIALux has open interfaces
DIALux supports 26 languages
Interface to Autodesk- Revit
Helpful insights and tips as well as
information on the latest DIALux
updates:
 DIALux Forum has over 11.000
active members
 Networking forums related to
DIALux:
>69,000
>329,000
>101,000
 DIALux e- newsletter frequently
distributed
 new DIALux Partner
 PlugIn & Update information
Thank you for your attention!
For any question please contact:
Afra Lucas
Mail: lucas@dialux.com
Tel.: 312 377 6126
Web: www.dialux.com