A Comparative Performance Study of Double Basin Single Slope Solar Still With and Without Using Nanoparticles

2018 ◽  
Vol 141 (3) ◽  
Author(s):  
Kalpesh V. Modi ◽  
Dhruvin L. Shukla ◽  
Dipak B. Ankoliya

In major region of the world, ample amount of fresh water is required for the drinking purpose as well as for the agricultural and industrial growth. Hence, it is necessary to investigate the alternate clean water extraction technologies to get the potable water from the saline water available at local area or inside the earth. One of the methods used to get the fresh water from the brackish water is solar distillation and the means used is called as a solar still. In the present work, single slope double basin solar still performance has been investigated with and without using Al2O3 nanoparticles at the location 20.61°N, 72.91°E. For the experimentation, two identical single slope double basin solar stills were fabricated with the same basin area. The yield of solar still, one without nanoparticles and the other with Al2O3 nanoparticles, has been measured for various weight concentrations of Al2O3 nanoparticles such as 0.01%, 0.05%, 0.10%, and 0.20%. The results show that the use of nanoparticles in solar still increases the distilled output by 17.6%, 12.3%, 7.2%, and 2.6% for weight concentrations of 0.01%, 0.05%, 0.10%, and 0.20%, respectively, in comparison to the solar still without nanoparticles.

2017 ◽  
Vol 67 ◽  
pp. 11-15 ◽  
Author(s):  
C. Jeyabalaji ◽  
K. Kalidasa Murugavel ◽  
T. Rajaseenivasan

Access to fresh water is a problem faced by both developed and under developed nations. Although seawater is plentiful, large amounts of energy is required to separate the potable water from the salts. Compared to other desalination processes utilising fossil fuels, solar distillation is inexpensive, environmentally friendly and employs clean and renewable energy. This paper seeks to explore the effect of the single slope solar still condenser plate material on the still production under Malaysian climate. 5 mm thick extra clear float glass condenser plate produced the highest amount of fresh water (63.5 ml) compared to 2 mm thick clear float glass and 5 mm thick bronze glass.


2019 ◽  
Vol 286 ◽  
pp. 08007
Author(s):  
M. Bouzaid ◽  
N. Mouhsin ◽  
M. Taha-Janan ◽  
M. Oubrek ◽  
O. Ansari

Morocco is considered as a water-stressed country and is among the countries that face fresh water scarcity. However Morocco has an important solar energy and a significant amount of seawater and ocean. Therefore converting saline water to fresh water using solar energy is the perfect and the cleanest solution. Solar still is the simplest, cleanest and cheapest technology of solar desalination. In this paper a novel solar still with stepped-slope absorber plate and baffles was proposed and developed in order to enhance the thermal performance of the conventional solar stills. In order to validate the performance of the developed technology a comparative study were elaborated. A mathematical model was developed. The energy balance equations for the various elements of the solar still are formulated and numerically solved using the dynamic simulation program Matlab/SimulinkTM and the Euler explicit method programmed by C++. Also, the experimental process of the new construction was evaluated and validates the new pattern performance. The thermal performance was investigated and shows considerable improvement through the new construction.


Author(s):  
Vikrant P Katekar ◽  
Sandip S Deshmukh

Solar still is a cost-effective and environment-friendly device to convert saline water into potable by employing solar energy in developing countries; however, it has an inferior thermal performance. This paper presents an attempt to improve energy efficiency and productivity of solar still by improving the design of the absorber plate. Modified solar still has been tested with a stepped-corrugated absorber plate. During the experimentation, it is found that the thermal performance of modified solar still is superior to conventional solar still. The average basin saline water temperature and the temperature difference between saline water and condenser glass cover are higher for stepped-corrugated solar still by 19.67 and 105.75%, respectively, as compared with conventional solar still. The average energy efficiency, exergy efficiency and productivity are found to be 259.61, 418.61 and 147.93% higher for stepped-corrugated solar still. Economic analysis indicates that the cost of distil water production is approximately Rs. 1.73 (0.023 $) per litre, and the payback period is 12 months, with carbon credits earned are approximately Rs. 11,998 (157.76 $).


2020 ◽  
Vol 8 (2) ◽  
pp. 94 ◽  
Author(s):  
Eduardo Rubio ◽  
José Luis Fernández-Zayas ◽  
Miguel A. Porta-Gándara

Solar distillation is a practical alternative for freshwater production in arid zones where seawater is abundant. The attractiveness of this approach resides in the simplicity of the solar still, equipment used to produce saline-free water for drinking, intensive agriculture, domestic use and other purposes. A solar still is an apparatus exposed to solar radiation that consists essentially of a basin with a solar collector where saline water is deposited and covered with a transparent inclined glass plate. The system operates as a greenhouse where the heated seawater evaporates and condensates on the inner surface of the cover. The distillate yield is collected in an external container. A research group in Mexico has been working for years doing research on the process of freshwater production with solar stills. Various research aspects have been addressed, among which are mathematical modeling of the physical phenomenon, practical research by building solar stills with different geometries and sizes, and the proposal of a process for mass-production manufacturing of solar stills with technology innovations. This paper is an overview of some of the most relevant results obtained by these research efforts.


2021 ◽  
Vol 216 ◽  
pp. 14-33
Author(s):  
Francisco Carranza ◽  
Claudia-Daniella Villa ◽  
José Aguilar ◽  
Hugo A. Borbón-Nuñez ◽  
Daniel Sauceda

2018 ◽  
Vol 5 (2) ◽  
pp. 124-133
Author(s):  
S.M. Atnaw ◽  
R.M. Ramli ◽  
S.A. Rusdah ◽  
T. Marimuthu ◽  
P. Mardarveran ◽  
...  

Direct sunlight has been utilized long back for desalination of water. Solar still is a device that converts saline water to potable water. This project mainly discussed about point-focus parabolic solar still (PPSS). Since lack of water supply has become a serious problem today, this prototype is design to produce fresh water from saline water to enable continuous supply of water. However, the current solar desalination generation capacity is generally low and has high installation cost. Hence, there is a need for the enhancement of the productivity which can be achieved through point focus parabolic solar still. Existing PPSS produces of 3.56 L/m2 fresh water of per day. In this project, we have some modifications which will increase the productivity of PPSS.


2021 ◽  
Vol 286 ◽  
pp. 02005
Author(s):  
Qahtan A Abed ◽  
Dhafer M Hachim ◽  
Wisam A Abd Al-Wahid

Solar distillation collectors are the device that runs on freshwater products. The solar still is one solar thermal technology for purification of water. This technique is employed to convert saline water into freshwater. At this time, the human being increased freshwater required consumption because of the increasing population density. The thermal analysis of a new design of cylindrical solar still (CSS) with hemispherical cover has been studied. A computer simulation model was improved to investigate its performance. The 2D symmetry simulation models of cylindrical solar still have been validated. The simulation model can emulate the temperature value of different points inside the CSS. The simulation results confirm an acceptable agreement with the experimental result was reported in the literature. From this simulation, it was noted that the freshwater product from the cylindrical solar still obtains the maximum daily productivity of 6.1 kg/m2 as compared to a traditional single slope solar still SSS as 3.18 kg/m2 during the day.


Pramana ◽  
2021 ◽  
Vol 95 (1) ◽  
Author(s):  
Nitesh K Chourasia ◽  
Ankita Srivastava ◽  
Vinay Kumar ◽  
Ritesh Kumar Chourasia

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