Table 2 The geometric characteristic of the evacuated tube solar collector.
Specification | Dimensions/Material | Units |
|---|---|---|
Collector dimensions (LxW) | 1.8 × 2.5 | m2 |
No. of evacuated tubes | 30 | – |
Collector aperture area (Ac) | 3.78 | m2 |
Glass material | Borosilicate glass | – |
Glass tube outer / inner diameter | 58/51 | mm |
Glass tube length | 1800 | mm |
Glass transmittance | 0.9 | – |
Glass absorptance | 0.93 | – |
Emission factor | 0.075 | – |
Manifold material | Stainless Steel 316L | – |
Manifold diameter/ length | 450/2500 | mm |
