|
Residential Wind Power
Solar Thermal Collectors
WINDerFUEL |
Typical performance for 20 tube array with 7 hours of sunlight 2 produces more than 20,000 Btu's which will raise 50 gallons of water by 60 deg F. Payback of system costs as soon as 5 years of usage. Vacuum tube: Length: 1800 mm (70.8") Outside dia.: 58 mm (2.28") Inside dia.: 47 mm (1.85") Wall thickness: 1.6 mm (0.063") Weight: 2 kg (4.4lbs) Material: borosilicate glass 3.3 Selective surface: Cu / SS / AL N triple deposition Absorbtance (a): +95% @ AM 1.5 Emissivity (e): 5% @ 80deg C Vacuum: P=5x10^-3 PA Thermal expansion: 3.3x10^-6 deg C Heat loss: 0.8 W/m2 deg C Hail resistance: 25 mm Warranty: 5 years Heat pipe: Dimensions: 8 x 1750 mm Efficiency: +95% Heat transfer fluid: non-toxic inorganic refrigerant 20 vacuum tube collector: Length: 1980 mm (77.9") Width: 1.65 M (65.25") Height: 170 mm (6.6") Gross area: 3.07 M^2 (33.1 sq ft) Net aperture: 2.01 M^2 (21.64 sq ft) Fluid capacity: 1,300 ml Flow rate: 1 - 1.5 gal/min Pressure rating: 65 psi max working Aperture efficiency: +70% Power - watts (Btu/hr): 1,024 W (3,493 Btu/h) * at STC = 1,000 W/m^2 insolation, Ti - Ta = 10 deg C. |
|
|