Description
The Pergola Solar Heating System Model by Dawtec merges functional outdoor architecture with sustainable energy production. Elegant wooden or aluminum pergola beams house selective-blue vacuum tubes that absorb solar radiation with 90% absorptivity and up to 70% efficiency. Using a 30% glycol–water mixture as the heat transfer fluid, the system operates at inclinations between 0° and 20°, with a maximum stagnation temperature of 220 °C. Integrated polyurethane insulation ensures minimal thermal losses, while natural or forced convection circulates thermal liquids. With a power output curve peaking at 600 W/m², this system can channel heat into water, space heating, air conditioning, or pool heating applications. Available in Oak, Cherry, Cedar, or Aluminum finishes, the pergola can be customized to suit any design aesthetic. Proudly engineered in Lebanon, Dawtec’s Pergola Solar System exemplifies green technology where form meets function.
Technical Specifications
| Item | Details |
|---|---|
| Absorber type A | Direct flow vacuum tube |
| Absorber type B | (P)-V-type copper pipe |
| Absorber material | Selective blue |
| Glass material | Treated borosilicate glass |
| Collector’s thermal insulation | Polyurethane insulation |
| Heat Transfer fluid | Glycol 30% – water 70% mixture |
| Absorptivity | 90% |
| Emissivity | 6% at 70 °C |
| Efficiency | Up to 70% |
| Stagnation temperature | 220 °C |
| System inclination | 0° to 20° |
| Thermal liquids circulation | Natural or forced convection |
| Maximum power output | 600 W/m² |
| Tube diameter | 5 cm or 6 cm |
| Material and structure | Aluminum, Wood, Stainless Steel |
