Browsing by Author "Sathyamurthy, Ravishankar"

Now showing 1 - 6 of 6

Effect of aluminum balls on the productivity of solar distillate
(Elsevier, 2020-08-01) Attia, Mohammed El Hadi; Driss, Zied; Manokar, A Muthu; Sathyamurthy, Ravishankar
Drinking water has become a real global problem, despite the abundance of unsaturated saltwater and colorless, which do not meet the requirements of the World Health Organization. The El Oued, in the southeastern part of Algeria, contains vast quantities of salt water and non-potable water. Solar distillation can be used as a solution to resolve this trouble. To provide drinking water, we use free sunlight to treat salt water. The traditional solar distillation device, which is one mile long (0.5×0.5 m), is designed to confirm the effectiveness of this solution. The traditional single slope solar distillation, its dimensions (0.5×0.5 m), is designed to confirm the effectiveness of this solution. Solar distillation is an environmental, economic and simple technique, but it needs some modifications to increase the distilled water production. In this work, we added aluminum balls inside the solar distillate box. In this work, we added 42 aluminum balls with a diameter of 2 cm inside a solar distillates box; positioned as follows (6 balls x 7 balls). The results showed that aluminum balls increased the distillation of distilled water by about 27.16 %.
Enhancing the solar still output using micro/nano-particles of aluminum oxide at different concentrations: An experimental study, energy, exergy and economic analysis
(Elsevier, 2021-09-01) Benoudina, Belkheir; Attia, Mohammed El Hadi; Driss, Zied; Afzal, Asif; Manokar, A Muthu; Sathyamurthy, Ravishankar
In this work, the use of micro/Nano-particles of aluminum oxide (Al2O3) with various concentrations in solar still has been reported. Three solar distillers has been fabricated and tested: first distiller is a Conventional Solar Still (CSS), the second distiller is a Modified Solar Still (MSS) contains micro-particles of Al2O3 (MSS – 0.1, 0.2 and 0.3% MP of Al2O3) and the third distiller is a MSS contains Nano-particles of Al2O3 (MSS – 0.1, 0.2 and 0.3% NP of Al2O3). In this experimental study, the micro/Nano-particles of the Al2O3 concentrations are prepared at the concentration ratio of 0.1, 0.2 and 0.3%. From the experimental outputs by adding Nano-particles of Al2O3 with concentrations of 0.1%, 0.2% and 0.3% in the CSS, the productivity of 4.9, 5.47 and 6.12 L/m2 has been observed. However, when using the micro-particles of Al2O3, the MSS productivity is equal to 4.07, 4.54 and 4.96 L/m2 for the concentrations equal to 0.1, 0.2 and 0.3%, respectively. While the maximum productivity of the CSS without micro/Nano-particles of Al2O3 was 3.02 L/m2 . Furthermore, the daily increase in yield of 62.25, 81.12 and 102.64% are obtained when using the Nano-particles of Al2O3 with the concentrations of 0.1, 0.2 and 0.3% respectively, as compared to the CSS. By using the micro-particles of Al2O3, the daily increase reaches only 34.77, 50.33 and 64.24% for the concentration equal to 0.1%, 0.2% and 0.3%, respectively as compared to the CSS.
Performance enhancements of conventional solar still using reflective aluminium foil sheet and reflective glass mirrors: energy and exergy analysis
(Springer Berlin Heidelberg, 2021-07) Selvaraj Chandrika, Vanitha; Attia, Mohammed El Hadi; Muthu Manokar, Athikesavan; Pedro Garcia Marquez, Fausto; Driss, Zied; Sathyamurthy, Ravishankar
Many researchers are seeking simple and successful solutions to increase the output from the solar distiller. In this research work, reflective mirrors and reflective aluminium foil sheet were fixed on inner surfaces of the single-slope solar distiller, leading to more water production. The presence of reflective mirrors and reflective aluminium foil sheet on inner surfaces of the solar distillate permits the reflection of solar radiation falling inside the basin. Experiments were carried out on three stills: the first distiller is conventional solar still with black painted walls (CSS-BPW); the second distiller is conventional solar still with reflective aluminium foil sheet walls (CSS-RAFW); and the third distiller is conventional solar still with reflective glass mirror walls (CSS-RGMW). The maximum total drinking water productions from the CSS, CSS-RAFW and the CSS-RGMW are 3.41, 5.1 and 5.54 kg/m2 , respectively. Compared to the CSSBPW, the production of drinking water was increased by 68.57% when using the reflective glass mirrors and 48.57% when using the reflective aluminium foil sheet.
Performance Evaluation of Modified Solar Still Using Aluminum Foil Sheet as Absorber Cover – A Comparative Study
(ASTM International, 2021-09-01) Attia, Mohammed El Hadi; Driss, Zied; Abdelgaied, Mohamed; Manokar, A Muthu; Sathyamurthy, Ravishankar; Hussein, Ahmed Kadhim
Solar desalination is one of the sustainable solutions to produce freshwater from brackish water. Unavailability of drinking water is a major socioeconomic problem in southeastern Algeria that affects a large population. In the face of the problem, local researchers are adopting solar distillation, which appears to be a suitable and inexpensive solution. Improving the productivity of a solar greenhouse still represents the subject of several studies around the world looking for ways to increase the yield of a solar still. The idea behind this paper is to use the aluminum foil sheet as the absorber cover to improve the productivity of a solar still. To obtain the influence of utilizing the aluminum foil sheet as the absorber cover on a yield of a solar still, the conventional still with the black absorber surface and modified solar still with the aluminum foil sheet as the absorber cover were compared at the same climate conditions. The experimental investigation was performed on different days. Experimental work shows that this technique has a negative effect on the productivity of the distiller, which is reduced by 1.5 to 2.5 times compared to the black absorber distiller. Therefore, it is not recommended to use an aluminum cover in regular solar distillation.
Sand dunes effect on the productivity of a single slope solar distiller
(Springer Berlin Heidelberg, 2020-04) Khechekhouche, Abderrahmane; Benhaoua, Boubaker; Manokar, Muthu; Sathyamurthy, Ravishankar; Kabeel, Abd Elnaby; Driss, Zied
Access to drinking water in many parts of the globe is shrinking over the years and much of the water resources are polluted or unpurified. North Africa is facing a huge water shortage due to drought and climate change. Water desalination has become very popular and serves as solar distillation which is proving to be an economical, simple and ecological technique, especially in rural and remote areas. Significant efforts have been made by many researchers in various laboratories to increase and improve the productivity of solar greenhouse distillation. In the present work, emphasis has been placed on the study of a single slope solar distiller having as dimension 50 × 50 cm, in the thickness of the impure water is 1 cm. Natural sand dunes from the El Oued South region of Algeria have been tested as a factor of efficiency improvement. A layer of this sand was deposited on the bottom of the distiller covering the whole surface on which the submit water is emerged. The results show that the productivity of distilled water has unfortunately decreased by 1.46 times.
Sustainable potable water production from conventional solar still during the winter season at Algerian dry areas: energy and exergy analysis
(Springer International Publishing, 2020-10-13) Attia, Mohammed El Hadi; Karthick, A; Muthu Manokar, A; Driss, Zied; Kabeel, Abd Elnaby; Sathyamurthy, Ravishankar; Sharifpur, Mohsen
The Algeria Sahara sufers from the scarcity of drinking water. Solar distillation is one of the simplest and generally inexpensive techniques to solve this problem. However, a second problem arises; this is low productivity in winter. The objective of this study is to overcome this difculty by modifying the experimental setup by adding nanoparticles that compensate for the weak solar radiation in winter. The experimental results show that the daily productivity of conventional solar still in summer is 3.5 kg m−2 and in winter is 2.2 kg m−2. Similarly conventional solar still with CuO nanoparticles in winter is 3 kg/m2 per day. The productivity of the conventional solar still without CuO nanoparticles in summer is best as compared to others. When comparing productivity during the winter season, it is found that the productivity of the modifed distillery was 1.4 times better than the productivity of the unmodifed distillery. The daily exergy efciency of the conventional solar still in summer and winter is equal to 1.2 and 1.58%, respectively. The use of CuO nanoparticles in winter season has exergy efciency equal to 2.41%. The daily exergy efciency of the solar still was increased by 52.5% when using CuO nanoparticles in the winter season