Thermal analysis of a weir-type cascade solar still integrated with PCM storage

Dashtban, Mohammad; Tabrizi, Farshad Farshchi

doi:10.1016/j.desal.2011.06.044

Cited by 231 publications

(67 citation statements)

References 28 publications

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“…The rate of evaporative energy and freshwater productivity are given as [13,17]. and fg h are the evaporative heat transfer coefficient and the latent heat of water vaporisation, respectively.…”

Section: Energy Efficiencymentioning

confidence: 99%

“…Sadineni et al have shown experimentally that the freshwater productivity of a cascade solar still is 20% more than the basin solar still [8]. Dashtban and Farshchi Tabrizi have demonstrated that the reduction of air gap in the cascade solar still improved the freshwater productivity by 35% [13]. Alaudeen et al have pointed out that the connection of flat plate collector to stepped solar still caused a significant increase in freshwater productivity [14].…”

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confidence: 99%

“…The abovementioned literature review showed that the effects of various design and operating parameters (i.e. air gap [13], mass flow rate [7,17], wick material [15], internal reflector [19], baffle [17,20], inclined tray [21], steps geometry optimisation [22] and nanofluid [5,6]) on the freshwater productivity of stepped cascade solar still have been investigated. However, the effect of PV/T collector connection to stepped cascade solar still to enhance freshwater productivity is not investigated.…”

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confidence: 99%

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Energy analysis of a stepped cascade solar still connected to photovoltaic thermal collector

Hedayati-Mehdiabadi¹,

Baluchestan²,

Sarhaddi³

et al. 2017

Int. J. Automot. Mech. Eng.

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In this paper, the performance evaluation of a stepped cascade solar still connected to photovoltaic thermal (PV/T) collector was carried out. The governing equations of problem was a set of initial value ordinary differential equations which were obtained by writing energy balance for the various components of solar still system (i.e. glass cover, brackish water, absorber plate, and PV/T collector). The numerical model of problem was solved by the 4th-order Runge-Kutta method under real climatic conditions sample. The validation of numerical model was carried out by the experimental data of previous literature. Parametric studies showed that the energy efficiency of stepped cascade solar still maximised in the desired brackish water flow of 0.03 kg/min and the PV/T collector area of 1.3 m 2 . The daily energy efficiency and accumulated freshwater were about 26% and 5.71 kg/(m 2 .day), respectively. An increase of about 20% was obtained in freshwater productivity by the connection of PV/T collector to the stepped cascade solar still. Also, PV/T collector, in addition to providing pumping power, can supply electrical power of about 0.918 kW/day for other uses. In order to produce freshwater during the night time, the usage of the phase change materials below the absorber plate was suggested.

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Section: Energy Efficiencymentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Energy analysis of a stepped cascade solar still connected to photovoltaic thermal collector

Hedayati-Mehdiabadi¹,

Baluchestan²,

Sarhaddi³

et al. 2017

Int. J. Automot. Mech. Eng.

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show abstract

“…Dashtban and Tabrizi [8] investigated weir-type cascade solar still integrated with phase-changing martial to keep latent heat during sunshine hours on the lake till nightfall. In their experiment, they studied the system with and without PCM and recorded the productivity of both cases.…”

Section: Introductionmentioning

confidence: 99%

Performance study of an innovative heating technique for a modified solar still

2017

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Abstract. An experimental comparison of water productivity between a conventional single slope, solar still, and a modi ed one is introduced in this work. The modi ed solar still is incorporated with a new heating technique on the saline water surface using nned cover with holes. These ns are used to increase the heat transfer area between the cover and saline water; meanwhile, holes are used to allow evaporated water to go through. These experiments are held under the outdoor conditions of Tanta, Egypt. The performance of the two solar stills has been tested at a water depth of 0.05 m and a quantity of saline water of 50 L. The results indicated that the productivity of water per square meter per day for the modi ed design still is higher than the conventional still by about 30.6%.

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“…Having these incredible points of interest, researchers concerned to investigate such potential sources of energy. There are a few strategies utilized to enhance the efficiency of the still such as latent heat storage with phase change [4][5][6][7] for improving distilled water generation, sensible warmth storing materials like rock wicks, solid funnels, stones, charcoal and steel scraps [8][9][10][11]. Coupling the thermo-electric [12] and reflectors [13,14] tools enhances the proficiency of production of water.…”

Section: Introductionmentioning

confidence: 99%

Single Basin Solar Still with Varying Depth of Water: Optimization by Computational Method

Thakur¹,

Pathak²

2017

IJEE

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A B S T R A C TSolar still is a device, used to convert brackish water into distill water but the major issue low profitability and it is imperative to outline an ideal device. Computational Fluid Dynamics (CFD) simulation can help designers to improve the execution of a sun oriented still for a given cost. In this study, we examine the capacity of CFD simulation in calculation of heat and mass transfer in a single basin sun powered still. Experiments were performed in month of June in Jaipur, India. In this work, single basin solar still was fabricated and then optimized using CFD based methodology for water depth of 0.01m, 0.02m and 0.03 m. CFD based results help in a designing a solar still with maximum yield productivity of distilled water. It was concluded that maximum yield was achieved when water depth has minimum value i.e. 0.01 m. Total dissolved solid (TDS) value for sample water taken at water basin was in range of 500 PPM but after distillation water at output reaches below 50 PPM. Therefore, solar still was capable of improving the quality of water and brackish water of high TDS value can be reduced and used for drinking purpose.

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Thermal analysis of a weir-type cascade solar still integrated with PCM storage

Cited by 231 publications

References 28 publications

Energy analysis of a stepped cascade solar still connected to photovoltaic thermal collector

Energy analysis of a stepped cascade solar still connected to photovoltaic thermal collector

Performance study of an innovative heating technique for a modified solar still

Single Basin Solar Still with Varying Depth of Water: Optimization by Computational Method

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