Description
Lightpipe - Sunlight Capture System
| S.No. | Parameters | Specifications |
|---|---|---|
| 1 | Sunlight Collector Cover | The Transparent, Clear dome allows light to be collected across the sky from all directions. |
| 2 | Shape | It should be moulded, Single Piece, dome shaped. |
| 3 | Material | Clear, transparent polycarbonate. |
| 4 | Thickness | To be formed out of 3mm thick clear polycarbonate sheet. |
| 5 | UV coating thickness for Raw material sheet | 80 Microns |
| 6 | UV Block | Upto 99% (UV A&B) |
| 7 | Impact Strength | 600-800 J/M (ASTM D256) |
| 8 | Flame Redundancy | Limiting Oxygen index LOI -25(ISO 4589 ASTMD 2863) |
| 9 | Light Transmission | 83% Test Standard |
| 10 | Heat Resistance Temperative | 45º - 150º Celsius (DIN 53460)(VICAT VST/B) |
| 11 | Thermal Conductivity | 0.21 /m0c (DIN 52612) |
Lightpipe - Light Transfer System - 400mm
| S.No. | Parameters | Specifications |
|---|---|---|
| 1 | Diameter | 400 mm |
| 2 | Shape | Cylindrical Shape |
| 3 | Material | Aluminum |
| 4 | Total Reflectivity | 98% |
| 5 | Material Thickness | Not less than 0.4 mm |
| 6 | Protection Film | PE foil not UV Resistant |
| 7 | Bends (in degrees) | 90 & 45 |
| 8 | Universal Roof adopter | Two piece, adjustable, universal roof adopter of standard length (570mm - 600mm) |
| 9 | Adjustable angle | 0° - 30° pitch angle of roofs. For angles above 30°, customer to specify |
| 10 | Diameters | To match LPR 400mm |
Lightpipe - Light Diffuser
| S.No. | Parameters | Specification |
|---|---|---|
| 1 | Shape | It should be moulded, single piece flat/ Dome Shape (like a flat bowl) for better distribution of light. |
| 2 | Material | Polycarbonate Clear Bright Prismatic or Pigmented Soft White   |
| 3 | Thickness | To be formed out of 2mm Thick material. |
| 4 | Light Transmission | Not less than 80%. |
| 5 | Diffuser Ring | Injection molded ABS plastic ring - white color. |
| 6 | Double Glazing | Diffuser double glazed with 1.0mm thick clear polycarbonate with 90% Light Transmission. |
| 7 | Diffuser to pipe fixing | Locking provision of pipe into the diffuser ring with silicon seal. |
Lightpipe - Roof Kerb
| S.No. | Parameters | Specifications |
|---|---|---|
| 1 | Construction | Two piece box roof kerb; factory made universal roof kerb.  |
| 2 | Material | Roof kerb made of 0.5mm bare galvalume sheet of 240 MPA. |
| 3 | Surface finish | Powder coated |
| 4 | Water splash protection | Kerb top side pointed arrow design with water breaker arrangement. |
| 5 | Water proofing method | Two seal system; Primary Seal – Butyl Rubber sealant and Secondary seal–Dow corning 789 high coefficient expansion silicon sealant. |
| 6 | Roof Crest blocking caps | Factory made bare galvalume sheet metal caps. |
Lightpipe - Fixing Accessories
| S.No. | Parameters | Specifications |
|---|---|---|
| 1 | Light Collector dome fixing gasket | Self-adhesive 10mm thick cushion EPDM rubber gasket. |
| 2 | Light collector to roof kerb fixing | Bolting system is followed. (Direct drilling of screws into the Dome is prohibited strictly). |
| 3 | Aluminum Tape | 50mm width to cover all circumference joints and longitudinal joints of pipes. |
| 4 | Rivets | Aluminum |
| 5 | Flashing plate to roof screws | Self-driving screws with EPDM gasket washer or aluminum riveting. |
Advantages
- Light capture is high at low sun angles, i.e before 9am and after 3pm.
- Extended daylighting hours.
- No heat build up.
- Uniform light dispersion.
- Daylight can reach the false ceiling covered areas.
Key Benefits
- Low angle sunlight (morning & Evening) is boosted
- Light pipe delivers more uniform day lighting throughout the day
- Midnoon sun radiation is partially rejected
- Blocks UV radiation
- High impact strength
- No change of light color
- Durable & long life
- Maintenance free
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