Characteristic equation of a passive solar still

Dev, Rahul; Tiwari, G.N.

doi:10.1016/j.desal.2008.07.011

Cited by 147 publications

(39 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is observed that the overall productivity does not change significantly for 24 hours time but the productivities day and night at differ significantly as revealed by Figure 6 plotted for a given mass of PCM. The productivity of the solar still without PCM has also been compared see Figure 14 with the data of [4,9]. The observed data show the similar trend, however, the reason for the difference in the productivity may be attributed to the difference in the climatic conditions of two cities of INDIA: Varanasi and NewDelhi.…”

Section: Resultsmentioning

confidence: 64%

“…The double slope solar still did not prove superior to single slope solar still [4,5]. However, single slope solar still with a condenser in the shaded region slopped increases the still efficiency by 45% [6], bla-ck dye injection in basin water enhance the productivity by 29% [7], the maximum of the annual productivity attained when the condensing glass cover inclination is equal to the latitude of the place [8,9] were found that a lower water depth gives better efficiency, they were dependent on instantaneous gain and loss efficiency curves to give a better understanding of the performance of solar stills.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Water Distillation Using Solar Energy System with Lauric Acid as Storage Medium

Al-Hamadani¹,

Shukla²

2012

IJEE

View full text Add to dashboard Cite

An experimental investigation on a solar still with lauric acid as phase change material (PCM) is carried out to examine the effect of both the mass of PCM and basin water on the daily distillate productivity and efficiency of the system under outdoor condition. Basic energy balance equations are written to predict the water and glass temperatures, daily distillate productivity and instantaneous efficiency of the single slope solar distillation system with PCM. It is found that the higher mass of PCM with lower mass of water in solar still basin significantly increases the daily productivity and the efficiency. Therefore, the distillate productivity at night and on day for solar still with PCM increased by 127% and 30-35% respectively than without PCM one. Shukla et al. approach of the use of inner glass cover temperature for productivity prediction which has also been investigated, and the prediction shows relatively better agreement with the experimental data than outer glass cover temperature.

show abstract

Section: Resultsmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Water Distillation Using Solar Energy System with Lauric Acid as Storage Medium

Al-Hamadani¹,

Shukla²

2012

IJEE

View full text Add to dashboard Cite

show abstract

“…(1, 2) it has been observed that energy, exergy efficiencies and embodied energy of single slope solar still remain higher in comparison to that of the double slope solar still. Dev and Tiwari [12,13] have found better performances at water depth 0.01 m and an inclination angle 30º for single slope passive solar still. They have also developed the characteristic equation of single and double slope passive solar still and suggested the sum of instantaneous gain and loss efficiencies (η=η i + η iL ) remain lower than maximum efficiency under ideal i.e.…”

Section: Resultsmentioning

confidence: 99%

“…Torchia-Núñez et al [11] have found that for same exergy input a basin, brine and passive solar still have exergy efficiencies of 12.9%, 6%, and 5% respectively. Dev and Tiwari [12,13] developed the characteristic equation for single and double slope passive solar stills. In ideal solar still, the instantaneous loss efficiency is minimum (for zero depth of water mass) as analyzed by Cooper [6].…”

Section: Introductionmentioning

confidence: 99%

Comparative Energy and Exergy Analysis of Various Passive Solar Distillation Systems

Singh¹,

Dev²,

Hasan³

et al. 2011

Linköping Electronic Conference Proceedings

Self Cite

View full text Add to dashboard Cite

Abstract:In this communication, a comparative energy and exergy analysis of various conventional solar distillation systems has been presented. The study includes passive solar distillation systems such as single and double slope solar stills. In a single slope solar still category, three solar stills with inclination angles 15º, 30º and 45º and a 15º inclined single slope multi wick solar still have been considered. Whereas one double slope solar stills and one double slope multi wick solar still, both inclined at 15º with east-west orientation, have been considered in double slope solar still category. The embodied energy is an important factor which depends on locally available materials and their manufacturing technologies. Materials like concrete, wood, steel etc are considered to calculate the embodied energy for the solar still equivalent to the fibre reinforced plastic after deriving the formulae. It has been found that the energy, exergy and embodied energy of single slope solar still are found higher than that of double slope solar still. Those materials which have lower thermal conductivity and low embodied energy than that of FRP such as concrete, PVC, wood can replace the FRP to save the embodied energy for similar performance. The metals have high embodied energy hence these can not be considered in terms of embodied energy despite the use of insulation.

show abstract

“…Many studies have been done on it, with variations in parameters like the type of the material used, the inclination angle of glass cover and cooling, absorbing material inside the solar still, composition of feed water and type of basin liner [27][28][29][30][31][32][33][34][35][36][37][38][39].…”

mentioning

confidence: 99%