A new approach in the field of solar desalination: Plate in tube technique
M.A. Anwar1,*, Q.H. Bari2, M.I. Matin1, T. Tarannum1
Plate in tube solar still is more efficient than conventional double slope basin type still.
Steel tray along with cement mortar plate provides a vast area for evaporation.
It can be fabricated easily from locally available materials.
It is comparatively more cost effective than other available techniques.
Desalinated water obtained from the plate in tube technique is suitable for drinking.
This study aimed to introduce a completely new technique in the field of solar desalination, which has been dubbed “Plate in Tube” technique. Obtaining fresh water is a major challenge nowadays, because fresh water resources are being depleted and often becoming salinized. Although ample amount of water exists in the oceans, its utilization is largely inhibited due to its extreme salinity. Under these circumstances, desalination using solar energy can be used to convert brackish and ocean water to pure drinking water through installation of an economical device. In “Plate in Tube” technique, a cement mortar plate covered with composite cloth placed in a steel tray is used to increase the evaporation area. The cloth along with the mortar plate additionally serves the function of absorption media for water and heat. The study shows that the fresh water production increased by nearly 100% compared to conventional methods, because of large temperature difference between the tube and the mortar plate. The system is very cost effective and requires little expertise to construct. Hence, it is very effective to meet the water demand of coastal, arid, remote and rural people.