why lumira - solar innovations® · the structure of lumira™ aerogel inhibits sound and vibration...
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Why Lumira™ aerogel?
Architects and building owners face challengeseveryday in balancing aesthetics and daylightingdesign needs with increasingly stringent buildingand energy code requirements. Coupled with thegrowing focus on proactively reducing thecarbon footprint of dwellings andbuildings, these challenges arebecoming increasingly daunting.Translucent Lumira aerogel isthe perfect solution to combatthese issues by maintaining andenhancing energy efficiencywhile enabling a wide range ofcommercial and residentialbuilding design choices. Theinclusion of Lumira in daylightingsystems virtually eliminates thehistorical trade-off of insulationvs. natural light by providing 3 to6 times the thermal performanceof the traditional, poorly insulated
fenestration products, while maintaining optimallight transmission. As a result, even large daylightsurface areas can maintain high energy efficiencyby reducing thermal loads.
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INSULATION VALUES OF EXISTING BUILDING INSULATION PRODUCTS(Values are per 1 inch/25 mm of material)
The inclusion of Lumira aerogel in daylighting systems virtually eliminates thehistorical trade-off of insulation vs. natural light by providing 3 to 6 times the thermal performance of the traditional, poorly insulated fenestrationproducts, while maintaining optimal light transmission.
Lumira™ Aerogel Performance Properties*
Thickness** Light Direct Solar U-value R-value (mm) Transmission (%) Transmission (%) (W/m2K) (in)
10 80 80 1.38 3.216 70 70 1.00 4.320 62 62 0.78 7.225 55 55 0.64 8.032 47 47 0.51 11.140 39 39 0.42 12.050 31 31 0.34 16.070 19 19 0.25 20.0
*Values are for Lumira aerogel only**Does not represent all available thickness options
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No compromises
Studies show that comfort, productivity, learning,healing and customer consumption/retention aredramatically improved by the tactical use ofnatural light as the primary source of illuminationin workplaces, schools, hospitals, homes, andretail environments. Traditionally, this hasresulted in a compromise, as the conventionalmaterials used to transmit natural light havedemonstrated an inability to insulate, while highlyinsulative materials have been unable to transmitmeaningful quantities of daylight. Currenttransparent daylight systems, while allowingmaximum daylight, also bring problems such asglare, solar overheating, drafts, hot spots andhigh contrast zones. Harnessing the exclusiveproperties of Lumira™ aerogel for use indaylighting systems has changed all that, with:
n Unsurpassed thermal insulation - R-value of 8 per inch / U-value of 0.64 W/m2K per 25 mm
n Increased natural light transmission -75% per 3/8 inch / 80% per cm
n Superior light diffusion – elimination of glare
n Improved acoustic performance
n Reduced solar heat gain/loss
n Decreased energy consumption - heat, air conditioning,lighting, ventilation, carbon emissions
n Unmatched moisture resistance - 100% hydrophobic
n Exceptional color stability and insulation performance
High efficiency, lower costs
Strengthening the customary weaklink of the building envelope withhigh performance Lumira daylightingsystems considerably impacts costand energy efficiency in a variety ofways. The natural light diffusion andglare elimination provided by Lumiraaerogel can replace or supplementartificial lighting, resulting insignificant energy and demandsavings. Heat loss and gain arecontrolled by the uniquecharacteristics of Lumira particles,which inhibit heat transfer,measurably impacting HVAC loadsand occupant comfort, at greatenergy savings to the building owner.The UV stability, durability, andmoisture resistance of hydrophobicLumira insulation result in extendedproduct life and lower long-termoperational costs. These benefits holdtrue even in extreme or demandingapplications such as passive houses,zero-carbon or positive energybuildings.
Architect: Murail Architectures – Nantes & Paris, FranceContractor: Belliard (facade)Owner: City of CarquefouBuilding size: 36,200 sq ft / 3,360 m2
Facade coverage: 16,150 sq ft / 1,500 m2
Facade thermal properties: R-value 6.4 / U-value 0.89 W/m2KTotal investment: $3.82 million / €2.9 million
RESULTS:Capital cost savings: Savings of $818,000 / €620,000 vs. standard glazing
and exterior solar shadesEnergy savings: 55,440 liters of fuel or $51,200 / €38,800 per yearCO2 emission reduction: 333,000 lbs / 151,000 kg per year Aesthetics and comfort: Soft diffused light without glare creates a high comfort
level for the athletes and spectators. Sound dampeningreduces internal noise interference.
“The combination of polycarbonate sheet and environmentally friendly Lumira™
aerogel particles provides a unique balance of cost, thermal performance, acousticperformance, visual comfort and aesthetics. It offers architects and developers anattractive, practical way of following the French HQE® approach to energymanagement and environmental impact.”
–Mr. Christophe Murail, General Manager, Murail Architectures
CASE STUDY
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Defeating the compromise with sustainable design
Sports Complex - Souchais, Carquefou, France
Hear the Difference
The structure of Lumira™ aerogel inhibits sound and vibrationtransmission not just by blocking, but by absorbing soundenergy, creating significant sound control by reducing externaland internal noise transfer.
The unique mechanical properties of Lumira particles enable itto absorb sound across a broad frequency band. Lumira-filleddaylighting systems transmit much less sound than traditionalsystems, leading not only to better energy efficiency, but alsoquieter interior spaces. Lumira fabrics used in roofing systemscan dramatically improve interior acoustics by significantlyreducing reverberation and transmission of exterior noise. Thismeans greater comfort for occupants, as well as freedom indesign for mixed use facilities.
Reduce your carbon footprint
Energy is a key part of thesustainability concept. It is widelyacknowledged that the construction,occupation and running of buildingsaccounts for close to half of all energyconsumption in the USA and Europe.Not only can Lumira™ aerogel saveenergy and reduce CO2 emissions, itis also reusable when the building isdecommissioned. Lumira aerogel issafe for human (particle sizes from 1to 4mm) and ecological systems, andis manufactured with little to noimpact on the environment. Thismeans including daylighting systemswith Lumira insulation in buildingdesigns can help create healthierliving, recreational and work spaces,and can assist in securing LEED™
certification and meet or exceedstringent building codes such as Part Lin the UK, Energieein-sparverordnungin Germany, and ReglementationTechnique in France. Lumira aerogelholds Silver Cradle to CradleSM
certification from McDonoughBraungart Design Chemistry. CabotAerogel is also a member of theAmerican Architectural ManufacturersAssociation and the US GreenBuilding Council.
The Lumira difference in sustainable design
Lumira daylighting systemprojects have been installed allover the world. Visit our website,www.cabotaerogel.com, formore information.
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Project: Retrofit of roofing system - mixed use facilityArchitect: Moseley Architects, Virginia Beach, VAEngineer: Stroud, Pence & Associates, Virginia Beach, VAContractor: Branch & Associates, Roanoke, VAOwner: Radford UniversityPlan area: 54,804 sq ft / 5,090 m2
RESULTS:Energy savings: $91,500 / €64,200 per year*CO2 emission reduction: 1,988,800 lbs / 904,000 kg per year**Aesthetics and comfort: Retrofit maintained the iconic roof structure while
exponentially improving user experience through sounddampening, moisture resistance and thermal insulation.
The original air-supported fabric roof of the Dedmon Center was replaced with witha Lumira™ aerogel fabric layer sandwiched between two layers of structural PTFEfabric, creating ultra-high insulation levels. The fabric is less than 50mm thick, yet itmore than triples the original roof’s thermal insulation performance with a value of R-12 (U-value 0.47 W/m2K) and natural light transmission value of 3.5%. The resultsof the completed roof retrofit were measured through IR imaging (see inset above).On a cold winter night, the cool temperature of the arena roof (A) is readily apparentas compared with the adjacent traditionally insulated roof (B) and the natatoriumfabric roof (C) which was constructed similarly to the original construct of the arenaroof, with 2 layers of fabric. When measured, the ambient exterior temperature was26°F (-3.3°C) and the interior temperature of the space was 68°F (20°C). Thesurface temperature of the arena roof was 28°F (- 2.2°C) and the surfacetemperature of the rest of the facility roofs averaged 66°F (19°C). * Calculated according to Fourier's Law of thermal conduction (integrated)** Carbon calculations based upon the following formula: 1kWh=.537kgCO2
Dedmon Athletic Center - Radford University, VA
Performance Reaches New Heights
CASE STUDY
C
B
A
High performance daylighting
When incorporated into the following systems, in both roofs and facades, Lumira™ aerogel offersarchitects and building owners a multitude of design benefits. Whether the installation is horizontal,vertical or at an angle, Lumira insulation retains its properties, enabling unflinching thermalefficiency while allowing exceptional daylight and optimized building aesthetics without sacrificing,but actually improving, occupant comfort and productivity:
Insulated Glass Units Continuous Vaults and Ridges withVentilation Systems
Unit Skylights, Rooflights, andSmoke Vents
Tensile Structures /Fabric Roofing
Structural Composite Panels forSkylights and Façades
Structural Polycarbonate SkylightSystems
Polycarbonate Façade Systems U-Channel Glass
Solid, non light-transmissiveconstruction delivers an R-value of 24 (U-value0.24), while highperformance triple-glazedkrypton glass glazingdelivers R-8 (U-0.7),making the choice easywhen compared to Lumiraaerogel, which allowsdaylighting products todeliver a range of R-values from 6 to 20 (U-0.28 to 0.89) whilecultivating essential natural daylight.
Aerogel
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The aerogel produced by Cabot Corporation is covered by a series of domestic and international patents and licenses.
This information is provided as a convenience and for informational purposes only. No guarantee or warranty as to this information, or any product to which it relates, is given or implied.This information may contain inaccuracies, errors or omissions and CABOT DISCLAIMS ALL WARRANTIES EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE AS TO (i) SUCH INFORMATION, (ii) ANY PRODUCT OR (iii) INTELLECTUAL PROPERTY INFRINGEMENT. In no event is Cabot responsible for, and Cabot does not acceptand hereby disclaims liability for, any damages whatsoever in connection with the use of or reliance on this information or any product to which it relates.
© 2011 Cabot Corporation - All rights reserved worldwide. Cabot and Nanogel are registered trademarks of Cabot Corporation. Lumira is a trademark of Cabot Corporation. Cradle toCradle is a service mark of MBDC.
THE AMERICASCabot CorporationCabot Aerogel
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Chinap. +86 21 5175 8800f. +86 21 6434 [email protected]
The New Standard in Eco-Daylighting Solutions
Aerogel is among the lightest and mosteffective insulating materials in theworld. Cabot’s Lumira brand aerogel,formerly Nanogel®, is a solid whichconsists largely of air (>90%) containedin a structure with pore sizes less thanthe mean free path of air molecules,which severely inhibits heat transferthrough the material, enabling world-class performance. Cabot producesLumira aerogel at its state-of-the-artmanufacturing facility located nearFrankfurt, Germany where it begancommercial production in 2003.
About Lumira™ Aerogel
Cabot Aerogel is a business of Cabot Corporation, a global specialty chemicals and performance materials company,
founded in 1882 and headquartered in Boston, Massachusetts, USA.
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CABOT AEROGEL IS A MEMBER OF:
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