The solar collector comprises evacuated tubes that are optimized in geometry and performance. These tubes are constructed from two concentric glass tubes, half spherically closed on one side & fused together on the other side; the gap between them is evacuated & afterwards hermetically plugged (vacuum insulation).
The internal glass tube has a highly selective & eco friendly aluminium nitrite sputter layer on its external surface, that acts as an absorber, to effectively capture solar power.
The tubes are 3 layer target tubes with the following coating layers:
1. Metal Insulation Layer (Copper) Reduce heat loss and low emission rate
2. Absorption Layer (Stainless Steel & AI-N-AI Enameled Mirror) Anti-corrosion & Anti-oxidation
3. 3.3. Anti-reflection Layer (AI-N-AI) Ensure high absorption rate & low emission rate by reducing reflection
The tubes come in 2 different dimensions as follows:
58 mm diameter * 1800 mm length: 0.164 Sq M aperture area
70 mm diameter * 2100 mm length: 0.231 Sq M aperture area
58-1800MM ETC: 58 mm * 1800 mm 3 layer ETC Tubes
70-2100MM ETC: 70 mm * 2100 mm 3 layer ETC Tubes