A-150 mm cassette
for the 25 kW or larger solar system model S7, S8 and S9
- Area: Western Cape South Africa
- Type of roofing material: natural slate 200x270x8 mm covering the solar panels
- Batten size, mm: 35x35
- Battens spaced, mm: 153, plus 3 minus 0
- System principle: extruded aluminum profile / cassettes with fiber insulation
- System material: AlMgCu
- Weight solar cassettes, aluminum kg/m2: 12
- Weight fluid content, liter/m2: 2.5
- Weight BituSun glue, kg/m2: 4-5
- Max operating pressure, bar: 6
- Bursting pressure, bar: >30
- Pressure drop for 120 meter ex fittings, kPa/flow 500l/h: 48
- Concept max thermal efficiency: <0.55
- Max output, W/m2: 550
- Max water temp: 8 degree C less than roofing material surface temperature
- Power output, kWh/m2/y: 800-1050
- Lifetime with 20% glucol/water (exchanged every 5 year) year: >20
Savings/Rc50/kWh electricity: 400-525R/m2/y
All data limits: 1000 watt irradiation, no wind, 30 degree roof angle, straight north, extra insulation in roof, one layer natural stone slates
A-150 mm cassette
for the 25 kW or larger solar system model S7, S8 and S9
- Area: Western Cape South Africa
- Type of roofing material: natural slate 200x270x8 mm covering the solar panels
- Batten size, mm: 35x35
- Battens spaced, mm: 153, plus 3 minus 0
- System principle: extruded aluminum profile / cassettes with EPF insulation
- System material: AlMgCu
- Weight solar cassettes, aluminum kg/m2: 12
- Weight fluid content, liter/m2: 2.5
- Weight BituSun glue, kg/m2: 4-5
- Max operating pressure, bar: 3
- Bursting pressure, bar: <10
- Pressure drop for 120 meter ex fittings, kPa/flow 500l/h: 42
- Concept max thermal efficiency: <0.50
- Max output, W/m2: 500
- Max water temp: 12 degree C less than roofing material surface temperature
- Power output, kWh/m2/y: 700-950
- Lifetime with water year: >20
Savings/Rc50/kWh electricity: 350-500R/m2/y
All data limits: 1000 watt irradiation, no wind, 30 degree roof angle, straight north, extra insulation in roof, one layer natural stone slates
