Three-effect tubular solar desalination system with vacuum operation under actual weather conditions

Experimental study on three-effect tubular solar still under vacuum and immersion cooling

“…The total production of the still is increased with the reduced operating pressure, as listed in Table 6. The data in our previous study with natural air cooling at atmospheric pressure was also presented here as case (vi) [33]. The accumulated solar radiation for case (vi) is 16.8 MJ/m 2 , and the average wind velocity is 0.8 m/s, closely resembling Vavg of cases (iv) and (v).…”

“…The system is composed of a three-effect TSS, an immersion tank, a 12-W water pump, a solar collector, a solar PV panel and an 8-W vacuum pump. In our previous attempt [33], a 120-W vacuum pump was used in the experimental system, while it was too cumbersome and costly for small-scale solar stills. The water pump circulates hot water between the solar collector and TSS.…”

“…The outmost shell is 1.6 m in length. The detailed specifications of the TSS can also be referred to in [33]. Before the operation, saline water is fed into the TSS from the saline tank by gravity.…”

Drivers, challenges, and emerging technologies for desalination of high-salinity brines: A critical review

“…Reusing the latent heat of condensation is, therefore, crucial to improving both SEC and water productivity [191]. A few studies have investigated multi-stage designs for STD [416][417][418][419][420], but only one is focused on hypersaline streams or high water recoveries [419]. Furthermore, most research employs synthetic NaCl solutions as feeds; investigating STD with saline feeds that contain foulants (e.g., scalants, organics, and microbes) will be key to realizing the technique for treating recalcitrant hypersaline streams [18].…”

Potential of tubular solar still with rectangular trough for water production under vacuum condition

“…Gude et al [17] investigated a two-stage vacuum-operated still with a 60 °C heat source and found that the distillation efficiency was 1.5. Despite of a few research works was carried out for the case of tubular solar still operating with rectangular trough under vacuum condition [18][19][20], the influence of the variation of through position and its dimensions inside the tubular shell have not yet been studied. This is the objective of this study in particular with a rectangular trough having a square cross-section.…”