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Energy Efficiency Calculations with DIALux
October 26th, 2012
Afra Lucas
International Business
Development
U.S. Representative Office
DIAL GmbH
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Chicago
Headquarters,
Lüdenscheid
Mirano
Istanbu
l Seoul
Taiwan
Center for Building Technology and Lighting Design
Light planning
Building technology
Software
Seminars
DIAL GmbH
www.dial.de
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Software development
PlugIns
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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
The DIALux Concept
www.dial.de
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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
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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
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DIALux Features
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
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Lighting design process
Required illuminance level and other normative factors (foot-candles,
uniformity,…)
Minimum number of fittings
Appealing luminaire arrangement
Maximum maintenance cycles
Minimum maintenance effort
Using Design Software
An interative process until the
–optimum products
–the correct number of products and
–maintenance values are found
Checking the values
Selecting lamps
Selecting luminaires
Placing luminaires
Calculating the results
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Energetic optimization
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
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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:
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
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Location (lat., long.) ; Exterior obstruction, Building
Rooms, Stories, Windows, Roof lights
Luminaires, Total Power, Illuminance level
Data available in the 3D design
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Daylit Zones
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
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Energetic optimization
Shop lighting example:
Attract people, draw the attention to products, invite to stay, highlight the
products
good color rendering, emphasize important products
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LED Spot
10° Beam
25W 1600lm
Tungsten Halogen
10° Beam
95W 1150lm
Identical light appearance
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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
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>69,000 >101,000
>329,000
DIALux for you?
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:
DIALux e- newsletter frequently
distributed
new DIALux Partner
PlugIn & Update information
DIALux is free of charge
DIALux has open interfaces
DIALux supports 26 languages
Interface to Autodesk- Revit
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Thank you for your attention!
For any question please contact:
Afra Lucas
Mail: [email protected]
Tel.: 312 377 6126
Web: www.dialux.com