The performance parameters of the corrugated solar still (CrSS) and conventional solar still (CSS) are investigated
experimentally from another point of view. The authors' view concerns with using the double layer wick material
and also reflectors together inside the CrSS. In addition, the influence of saline water depth (1, 2, and 3 cm) on
CrSS performance was also investigated. Results indicated an enhancement in the total productivity and efficiency of the CrSS. During experimentations, the productivities of CrSS with wick and reflectors are about 145.5%
higher than the CSS, at a brine depth of 1 cm, and the daily efficiency of CrSS and CSS are approximately 59%
and 33%, respectively.

دراسة عملية لوحدة تقطير ذات ماص مموج مع خيش وعواكس / Experimental investigation of corrugated absorber solar still with wick and reflectors

Investigation and performance analysis of solar still with energy storage materials: An energy- exergy efficiency analysis

In this paper, effect of brackish water depth and wick material on the performance of modified basin type double slope multi-wick solar still (MBDSMS) has been studied at MNNIT, Allahabad, U.P., India. Modifications made in the conventional Multi-wick solar still leads to significant increase in the heat input, yield obtained and overall efficiency of the modified design. Total yield obtained shows increase with decrease in the depth of brackish water and black cotton as wick material is found to be more effective in comparision to jute wick.

Performance Analysis of Modified Basin Type Double Slope Multi-Wick Solar Still

Augmented performance of tubular solar still integrated with cost-effective nano-based mushrooms

Reverse osmosis desalination systems powered by solar energy: Preheating techniques and brine disposal challenges – A detailed review

Herein, five alternative combinations were applied on and under the still basin to enhance tubular solar still performance. Firstly, using a v-corrugated aluminum basin. Secondly, adding wick material to the v-corrugated aluminum basin. Thirdly, adding carbon black (CB) nanofluid on wick material located on the v-corrugated aluminum basin (heat localization). Fourthly, using phase change materials (pure paraffin wax) under the v-corrugated aluminum basin integrated with wicks and carbon black nanofluid (1.5 wt.%). Finally, the best case consists of the v-corrugated basin combined with wick, 1.5 wt.% CB nanofluid and CB nanoparticles with 3 wt.% were added to paraffin wax under the basin. The results showed that the productivity was enhanced by 21.4, 42.77, 58.48, 73.56, and 88.84% for the cases with the previous order. For the best case (fifth case), the thermal energy and exergy efficiencies were enhanced by 82.16 and 221.8%, respectively, whereas the cost could be saved by 22.47 %, compared to the conventional tubular solar still. Accordingly, the proposed materials and their combinations led to acceptable and feasible enhancement in the tubular solar still performance due to the improved heat transfer characteristics, and hence the increased evaporation rate.

Performance enhancement of tubular solar still using nano-enhanced energy storage material integrated with v-corrugated aluminum basin, wick, and nanofluid

The present study presents an enhancement in wick solar stills performance depending on using different aspect ratios with the same project area and wick materials, glass cover cooling, and external reflectors after practical knowledge of the best wick material type and dimensions. The proposed three stills (A), (B), and (C) have evaporation area dimensions of 1 × 0.85, 1.5 × 0.57, and 2 × 0.425 m2, with an aspect ratio of 1.18, 2.63, and 4.71, respectively. The results revealed that the solar still with medium dimensions set has the best performance. Also, adding a top and bottom reflector to type (B) solar still with cotton cloth wicks increased the freshwater productivity and energy efficiency by 37.99 and 39.96%, respectively, compared to type (A) solar still with cotton cloth wicks. Moreover, the cost of one liter of freshwater distillate was decreased by 1.82%. Applying glass cover cooling on type (B) solar still with cotton cloth wicks increased the freshwater productivity and energy efficiency by 30.59 and 33.13%, respectively, compared to type (A) solar still with cotton cloth wicks. Furthermore, we have a decrement in the cost of one liter of freshwater distillate by 7.69%. Moreover, adding reflectors and cover cooling together to wick solar still increased the freshwater productivity and energy efficiency by 52.36 and 58.5%, respectively. On the other hand, the cost per liter of freshwater was reduced by 9.8%.

S. M. El-Behery

Papers

Performance enhancement of tubular solar still using nano-enhanced energy storage material integrated with v-corrugated aluminum basin, wick, and nanofluid

Enhancement of solar still performance via wet wick, different aspect ratios, cover cooling, and reflectors