Experimental and numerical study of stepped solar still integrated with a passive external condenser and its application

Sivaram, P.M.; Kumar, S. Dinesh; Premalatha, M.; Sivasankar, Thirugnanasambandam; Appusamy, Arunagiri

doi:10.1007/s10668-020-00667-4

Cited by 22 publications

(9 citation statements)

References 38 publications

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“…The significance of adopting an external passive condenser was evaluated [41]. The proposed design included stepped solar still integrated with an external condenser consisting of 15 aluminium horizontal tubes and an aluminum air duct.…”

Section: Glass Cover Coolingmentioning

confidence: 99%

Solar Still Productivity Improvement Techniques and Recent Advancements: Review Study

Faisal

Hameed

2021

Al-Furat Journal of Innovations in Mechanical and Sustainable Energy Engineering

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The growing demand for freshwater is a challenging task facing human society due to the rapid rise of the global population. Solar distillation emerged as an economical, environmentally friendly practical technology to produce freshwater. Solar still is a proven technology to produce clean water and removing dissolved and solid impurities as well as chemical hazardous, organic bacteria, and non-organic contaminants. Rural and remote regions that suffer from impure water can beneficiate this technique. However, the daily productivity of single slope solar still SSSS is questionable. Hence, several researchers focused on enhancing the productivity and efficiency of SSSS through adopting a wide range of modifications. This review reports various modification techniques that have been investigated to improve SSSS efficiency and clean water productivity. It mainly considered modifying the absorption plate, thermal energy storage, utilization of reflectors, adopting nanotechnology, integrated condenser, cover cooling, Humidification-dehumidification HDH, and Basin water preheating technique.

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Section: Glass Cover Coolingmentioning

confidence: 99%

Solar Still Productivity Improvement Techniques and Recent Advancements: Review Study

Faisal

Hameed

2021

Al-Furat Journal of Innovations in Mechanical and Sustainable Energy Engineering

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“…Their result showed an increase in productivity also decreases cost per liter of water. Sivaram et al [25] studied on the effect of external condenser on the stepped solar still to improve productivity. Their results have shown an increase in the overall efficiency of still by 10.6% in summer and 12.2% in winter.…”

Section: Introductionmentioning

confidence: 99%

Effect of Steps Height and Glass Cover Angle on Heat Transfer Performance for Solar Distillation: Numerical Study

2022

IJE

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“…Another research was done on the stepped SS by Sivaram and his team. 42 They focused on the efficiency improvement using an external condenser (passive) that resulted in an overall efficiency of 10.6% in the summer season while reaching 12.2% in winter and made an improvement in the produced water, reaching 7% during summer and 12% in the winter.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of a stepped solar still employing a phase change material, a conical tank, and a solar dish

Dawood

Shehata

et al. 2022

Intl J of Energy Research

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The configuration of an external solar dish improves the performance of stepped slope solar still (SS) in an experimental setting. The use of an external solar dish raises the effects of the water basin, resulting in a higher rate of evaporation. The stepped still was designed, built, and tested in Ismailia, Egypt, using local weather conditions. The proposed SS had a 1 m 2 base area and eight steps, a solar dish with a concentration ratio of 80, a cone tank, two centrifugal pumps, four photovoltaic modules totaling 1000 W, a control unit, and solenoid valves. The impact of utilizing the storage material during the phases was investigated. A nozzle was installed at the top of the cone tank. Four mass flow rates of circulated water were examined 250, 350, 450, and 550 mL/min. The control unit receives inputs from the photovoltaic output, photodiodes, and water temperature inside the cone. The control unit outputs the signal for the two solar dish motors, centrifugal pumps, and solenoid valves. First, a standard stepped SS, second, a stepped SS using phase change material (PCM), and finally, a stepped SS using PCM combined with a solar dish were investigated. The conventional stepped SSs with PCM had an optimal mass flow rate of 250 mL/min, whereas the stepped SS integrated with the solar dish had 550 mL/min of mass flow rate (an optimum value). The highest daily freshwater productivity was 7.63, 9.18, 11.23, and 13.9 kg/d for water spraying mass flow rates of 250, 350, 450, and 550 mL/min, respectively, with 0.0161 $/L/m 2 of a maximum projected cost, according to data from an integrated stepped SS.

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Experimental and numerical study of stepped solar still integrated with a passive external condenser and its application

Cited by 22 publications

References 38 publications

Solar Still Productivity Improvement Techniques and Recent Advancements: Review Study

Solar Still Productivity Improvement Techniques and Recent Advancements: Review Study

Effect of Steps Height and Glass Cover Angle on Heat Transfer Performance for Solar Distillation: Numerical Study

Experimental investigation of a stepped solar still employing a phase change material, a conical tank, and a solar dish

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