Colt Solar Shading Louver Systems

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Colt Solar Shading Louver Systems

Text of Colt Solar Shading Louver Systems

  • Solar Shading Louver Systems

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  • Mestek has a strategic alliance andexclusive licence agreement with ColtGroup USA. Mestek is the exclusivelicensee to produce and market the Coltdesigned products for the US market andall products are produced in the USA.

    Additionally, Mesteks Architecturalactivities include Linel and AWV. Theemphasis for these companies is inproviding products and solutions thatbeautify and improve the performance ofbuildings through Intelligent Envelopes.

    The movement toward sustainable buildingdesigns is being driven largely byenvironmentally-sensitive building ownersand/or their prospective tenants. As theseowners and their consultants weigh theirdesign objectives and alternatives, theyoften find that exterior solar shadingsystems are an ideal part of the "green"solution for their buildings.

    An exterior solar shading system blocks a significant amount of the solar radiation from entering the buildings windows -which results in reduced HVAC installedcosts due to equipment down-sizing andreduces operating costs due to reducedcooling loads.

    Indeed, some form of exterior solarshading is now part of the prescriptivedesign requirements in the new Standardfor the Design of High Performance,Green Buildings, except for Low-riseResidential Buildings (ANSI, ASHRAEs,USGBC, IES 189.1).

    SHADING LOUVERS

    Solar shading louver systems are one ofthe most effective ways to reduce airconditioning loads, while offering designersthe opportunity for distinctive architecturalimpact.

    Radiation from the sun is transmitted,absorbed and reflected by the louvers. As a result solar heat gain is prevented frompassing into the building. If an operablesystem is chosen, the adjustable louver swill track the position of the sunincreasing the systems shadingeffectiveness and further reducing glare.On overcast days, the operable louvers canbe opened to maximize the naturaldaylight into the building.

    COLTS OFFERING

    n Computer modeling of the solar shading louver system including calculation of sunangles and reduction in solar heat gains by exposure throughout the year.

    n All Colt solar shading louver systems are custom designed for your application and can be provided in various configurations, materials, finishes and coatings to meet each projects requirements.

    n Two control options are available for the operable systems SolTronic III formost projects and the ICS 4-link for very large projects with additional functionality.

    n All systems are durable with low maintenance needs.

    COLTS TRACK RECORD & CAPABILITIES

    Colt has more than 40 years experience inthe design and supply of solar shadinglouver systems. Colt was the first toincorporate electricity generatingphotovoltaic cells into solar shadingsystems. Colt continues to build on thisexperience and has been providing solarshading systems for the US market since2006.

    We offer an extraordinary range of solarshading systems from fixed to fullyoperable with a variety of carrier systems,materials and finishes.

    Colt is dedicated to innovation and hascomprehensive design capabilities. Whilethis brochure provides a general overviewof our capabilities, we welcome theopportunity to develop solutions to satisfyyour unique requirements.

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    Introduction

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  • SOLAR GEOMETRY

    The sun rises in the East and sets in theWest. The sun travels in an arc, reachingits highest altitude in the summer and itslowest altitude in the winter.

    NORTH FACING FAADES

    For predominately north facing faades inall but the lowest latitudes the faade willnot receive direct sunlight and solarshading is not required or beneficial froman energy perspective.

    Shading louvers may be used for anasthetic look complimentary with the othersouth, east and west facing faades.

    SOUTH, EAST AND WEST FACING FAADES

    For a predominately South facing faade, a small amount of solar shading can beachieved using a fixed horizontal brisesoleil sunshade. In winter such a device,however, cannot stop direct rays from thesun penetrating the buildings windowssince the sun is much lower.

    While passive solar heating at times isbeneficial, some might be surprised tolearn that the cooling loads on manysouthern-facing zones peak in the late fall/early winter due to the solarradiation.

    With a predominately East or West facingfaade, a fixed system will not performwell throughout the day as the altitude ofthe sun varies throughout the day.

    Effective solar shading on the South, Eastand West faades can be achieved only byusing an operable shading louver systemon the buildings faade. The angle of thelouvers is adjusted throughout the day toprovide optimal shading.

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    South North

    West

    East

    SE

    NW

    NE

    SW

    Solar Altitude for21st June

    Solar Altitude for21st Sept

    Solar Altitude for21st Dec

    Too much shading

    Optimum shading

    Too much glare,light passesthrough thelouver blades

    8 am (5 pm)9 am (4 pm)

    10 am (3 pm)

    11 am (2 pm)

    12 pm (1 pm)

    8 am (5 pm)9 am (4 pm)

    10 am (3 pm)11 am (2 pm)

    12 pm (1 pm)

    8 am (5 pm)

    9 am (4 pm)

    10 am (3 pm)

    11 am (2 pm)

    12 pm (1 pm)

    Summer

    Spring/Autumn

    Winter

    Vertical shadow angle (theprojected angle of the solar altitude)

    South facing(Northern Hemisphere)

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  • SHADOGLASS

    Shadoglass are fixed or operable exteriorsolar shading systems that incorporateglass louvers. The louvers can be installedeither horizontally or vertically on thebuildings faade. A Shadoglass shadingsystem can significantly reduce solar heatgain while providing unobstructed viewsand natural daylight. With todays glasstechnology, very effective shadingperformance can be achieved with glasslouvers.

    Glass louvers are available in variouscolors, surface finishes, patterns andcoatings to meet specific designrequirements. This enables the designer tocontrol the quality of light entering thebuilding.

    Features and benefits

    n Available in widths up to a nominal 24".

    n Available in unsupported spans up to a nominal 6.5', supported spans up to a nominal 13' (depending on wind loads and other design criteria).

    n Wide range of colors, surface finishes, patterns and coatings (i.e. fritted).

    n All principal support components are manufactured from corrosion-resistant extruded aluminum alloy with stainless steel fixings.

    n Fully operable or fixed.

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    Louver Materials& Finishes

    Colt offers a variety of materials and finishes for the shading louvers n Shadoglass Glass with various colors, surface finishes, patterns and coatingsn Shadovoltaic Glass with photovoltaic cells n Shadoprism Non-specular prismsn Shadotex Textile fabricsn Shadometal Metal - solid or perforatedn Shadotimber Timber wood

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  • SHADOVOLTAIC

    Shadovoltaic are fixed or operable exteriorsolar shading systems that incorporate glasslouvers with photovoltaic cells integratedinto the glass to generate electricity at thesame time as providing shading. Thelouvers can be installed either horizontallyor vertically on the buildings faade.

    Both monocrystalline and polycrystallinecells are available. The photovoltaic cellsmay be integrated into the glass, either byattaching them on the underside of theglass louver or by laminating them betweentwo layers of glass. The glass panels areheat soak tested toughened glass with theedges treated to remove stress. Glassthicknesses of between a nominal 0.3" and0.6" are available. The glass specificationcan be tailored to suit each application.

    Photovoltaic glass louvers are available invarious colors, surface finishes, patterns andcoatings to meet specific design requirements.

    Features and benefits

    n Combines the functions of solar shadingwith the generation of electrical power.

    n Available in widths up to a nominal 24".

    n Available in supported spans up to a nominal 13' (depending on wind loads and other design criteria).

    n All principal support components are manufactured from corrosion-resistant extruded aluminum alloy with stainlesssteel fixings.

    n Fully operable or fixed. An operable BIPV system which tracks the suns position typically generates about 20% more electricity than a fixed system.

    Louver Materials& Finishes

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  • 8SHADOPRISM

    Shadoprism are operable exterior solarshading systems that incorporate non-specular prismatic plates.

    The system is a transparent sun protectionsystem for faades and glass roofs thatprevents the ingress of the direct sun's heatinto the interior of the building and at thesame time lets through a maximum ofdiffuse daylight.

    Total reflection of the daylight occurswhere the prism angle is 90 relative to thedaylight. This total reflection functionsonly within a very narrow range of angle.As such, the operating prismatic louverswill track the sun's position reflectingthe maximum amount of direct sunlightwhile allowing in all the diffuse light.

    On overcast days, the prism louvers can beopened to allow unhindered vision andmaximum natural daylight through theglazing.

    Features and benefits

    n Highly effective shading performance with maximizing natural diffuse daylight into the building.

    n Available in w