Evacuated glass solar tubes (EGT) in a passive solar water heating system. EGTs absorb and transfer energy from sunlight | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Tek Image |
Taille de l’image : | 4200 px × 5600 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |