SOLERA® Introduction: Architectural Daylighting
SOLERA® is a wide diffuser daylighting light redirecting glazing. It takes the daylight resource and redistributes the daylight deeply and uniformly into a space. It is a proven element of a successful daylighting system. It increases the daylighted area, and the daylight levels. SOLERA® plays an incremental role in some credits, and is the major contributor towards others. SOLERA® surpasses LEED requirements for daylighting and views in that it is able to achieve increased quality of daylighting. SOLERA® daylighting systems are also designed to function irrespective of shading systems and blinds (vision glass –based daylighting often are subject to post-occupancy changes which render the daylighting functionality ineffective).
The following credits are either directly or indirectly augmented by SOLERA® wide diffusion high performance glazing.
Indoor Environmental Quality
EQ Credit 6.1: Controllability of Systems: Lighting
EQ Credit 8.1: Daylight & Views: Daylight 75% of Spaces
Innovation and Design Process
ID Credit 1-1.4: Innovation in Design
Intent: Achieve increasing levels of energy performance above the baseline in the prerequisite standard to reduce environmental and economic impacts associated with excessive energy use. Requirements: Select one of the three compliance path options described below. Project teams documenting achievement using any of the three options are assumed to be in compliance with EA Prerequisite.
Application: SOLERA® daylighting technology, when used with a photo sensor and electric lighting controls, provides the means of reducing electrical usage by turning off electric lights. The electric lighting controls provides optimal control and ensures maximum a means of documenting the electricity reduction of electricity usage SOLERA® ’s wide diffusing capability increases daylighting effectiveness and thereby the number of lights that can be turned off. The diffuse illumination eliminates the high contrast between direct beam sunlight and shadow allowing proper photo sensor operation and appropriate dimming of electric lights.
SOLERA® can reduce HVAC loads by providing enhanced thermal insulation and controlling overall solar gain, and eliminating concentration of solar gain such as direct beam sunlight. SOLERA® Verification: Advanced Glazings Ltd. provides verification and documentation through Radiance lighting simulation. Verification of HVAC reduction can be determined by the R value (U-value)
of SOLERA® T & S along with energy modeling. Elimination of direct sunlight can be demonstrated through Radiance Modeling.
Intent: Provide for the ongoing accountability of building energy consumption over time.
Requirements: Develop and implement a Measurement & Verification (M&V) Plan consistent with Option D: Calibrated Simulation (Savings Estimation Method 2), or Option B: Energy Conservation Measure Isolation, as specified in the International Performance Measurement & Verification Protocol (IPMVP) Volume III: Concepts and Options for Determining Energy Savings in New Construction, April, 2003. The M&V period shall cover a period of no less than one year of post-construction occupancy.
SOLERA® Application: A SOLERA® daylighting system includes 1) a daylighting device that redirects daylight into a room above horizontal, 2) a photo sensor that measures the amount of light in the room, and 3) electric lighting controls that dim or shut off electric lights. The SOLERA® daylighting system increases the amount of light reaching the back of a room increasing the number of lights that can be turned off and also provides the means of measuring, recording, and verifying the energy savings of the system SOLERA® Verification: Advanced Glazings Ltd. provides verification and documentation through Radiance lighting simulation.
Intent: Provide a comfortable thermal environment that supports the productivity and well-being of building occupants.
Requirements: Design HVAC systems and the building envelope to meet the requirements of ASHRAE Standard 55-2004, Thermal
Comfort Conditions for Human Occupancy. Demonstrate design compliance in accordance with the Section 6.1.1 Documentation. SOLERA® Application: SOLERA® can offer enhanced insulation values over conventional vision glass thereby contributing to thermal
comfort through uniform interior surface temperature. In addition by uniformly distributing natural light, solar gain concentration such as direct beam sunlight is eliminated.
SOLERA® Verification: HVAC reduction can be determined by the R value (U-value) of SOLERA® T & S along with energy modeling. Elimination of direct sunlight can be demonstrated through Radiance Modeling.
Intent: Provide for the building occupants a connection between indoor spaces and the outdoors through the introduction of daylight and views into the regularly occupied areas of the building.
Option 1 – Calculation
Achieve a minimum glazing factor of 2% in a minimum of 75% of all regularly occupied areas. The glazing factor is calculated as follows:
Glazing Window Area [SF] Window Actual Tvis Window Factor = Floor Area[SF]x Geometry Factor x Minimum Tvis x Height Factor
Option 2 – Simulation
Demonstrate, through computer simulation, that a minimum daylight illumination level of 25 foot-candles has been achieved in a minimum of 75% of all regularly occupied areas. Modeling must demonstrate 25 horizontal foot-candles under clear sky conditions, at noon, on the equinox, at 30 inches above the floor
Option 3 – Measurement
Demonstrate, through records of indoor light measurements, that a minimum daylight illumination level of 25 foot-candles has been achieved in at least 75% of all regularly occupied areas. Measurements must be taken on a 10-foot grid for all occupied spaces and must be recorded on building floor plans. In all cases, only the square footage associated with the portions of rooms or spaces meeting the minimum illumination requirements can be applied towards the 75% of total area calculation required to qualify for this credit. In all cases, provide daylight redirection and/or glare control devices to avoid high-contrast situations that could impede visual tasks. Exceptions for areas where tasks would be hindered by the use of daylight will be considered on their merits.
SOLERA® Application: A SOLERA® daylighting system captures the daylight resource and redistributes the daylight more uniformly deep into a space. In so doing it eliminates direct beam penetration through the diffusing glazing and glare. The deep reaching diffuse daylight makes it possible to achieve the required 25 foot candles in 75% of spaces in many more types of interior configurations than would otherwise be possible. We provide the verification and documentation needed to gain this credit through lighting simulation with accepted software.
ID Credit 1-1.4: Innovation in Design
Intent: To provide design teams and projects the opportunity to be awarded points for exceptional performance above the requirements set by the LEED-NC Green Building Rating System and/or innovative performance in Green Building categories not specifically addressed by the LEED-NC Green Building Rating System.
Requirements: Credit 1.1 (1 point) In writing, identify the intent of the proposed innovation credit, the proposed requirement for compliance, the proposed submittals to demonstrate compliance, and the design approach (strategies) that might be used to meet the requirements.
SOLERA® Application: There is no requirement in LEED that daylight be comfortable or meet the requirements of good lighting design. As a result, building occupants may modify the glazing system or operating parameters by obstructing glazed openings with blinds or shading devices, thereby rendering daylighting and view systems ineffective. SOLERA® daylighting systems can be designed to provide superior levels of thermal and visual comfort beyond the requirements of LEED NC, and are therefore much more likely to retained in functional form during actual operation of the building. A well designed SOLERA® System may be eligible for Innovation in Design credits, subject to building specifics.
Verification: Radiance simulations. Advanced Glazings Ltd. provides verification and documentation through Radiance lighting.