scholarly journals Comparative Study of Three Solar Desalination Units Based on Theoretical and Experimental Approach

2019 ◽  
Vol 01 (01) ◽  
pp. 112-118 ◽  
Author(s):  
Houcine Moungar ◽  
Ahmed Azzi ◽  
Youcef Sahli ◽  
Abdelkarim Haida
Keyword(s):  
Experimental Study ◽  
Comparative Study ◽  
Experimental Approach ◽  
Produced Water ◽  
Water Productivity ◽  
Water Layer ◽  
Water Quantity ◽  
Solar Still ◽  
Solar Desalination ◽  
Water Amount

This work presents a theoretical and experimental study of a double slope still with and without immersed fins compared to the single solar still monthly production. The influences of the distance between fins, fin heights, fin numbers and water layer thickness on the solar still production have been widely researched. From the obtained results, the distance between fins has no significant effect on the still productivity. Moreover, for fin heights from 2 to 5 cm, cause the productivity raising, when the fin heights are from 6 to 8 cm found an increasing in the still production. A larger fin numbers lead to a rising in the produced water amount. The water quantity augmentation in the basin makes the water productivity decreasing. The experimentally obtained results during the day June 11, 2016, show that the solar still with immersed fins productivity was about 15 to 27 % higher than that of the simple solar still, under the following conditions, i.e. mw = 42.61 kg, h1 = 3.6 cm, Vw = 3.5 m/s, lw = 5 cm and Nfins = 12.

scholarly journals A Study of Solar Desalination Still Combined with Air-Conditioning System

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Z. S. Abdel-Rehim ◽  
A. Lashine
Keyword(s):  
Fresh Water ◽  
Air Conditioning ◽  
Water Productivity ◽  
Integrated System ◽  
Maximum Efficiency ◽  
Present System ◽  
Solar Still ◽  
Combined System ◽  
Air Conditioning System ◽  
Solar Desalination

A study of solar desalination still combined with air-conditioning system is presented in this work. Combining the solar still with the air-conditioning system can increase the condensate output from the solar still while meeting the cooling load needs. The operation of the combined solar distillation and air-conditioning system, that utilized the heat rejected by the condenser and the heat sink of the evaporator, has been tested to obtain the distillate output from the solar still during the air-conditioning of a space application. Experimental work of the present system is carried out in June 2009 (summer month), in Cairo, Egypt. The present problem is tested to use the integrated system operation for already utilizing air-conditioning energy consumption; that is, meeting the hourly air-conditioning load and the daily fresh water production. The system is tested for day and nighttimes of operation of the combined system for the summer month: June 2009, Cairo, Egypt. Economic study evaluation is presented. The results show that the maximum fresh water productivity through June is 29 Liters in daytime of June 5 2009 and 37 liters in nighttime (nocturnal time) of June 3 2009. The present system more efficient in day time (8:00 AM–8:00 PM) and night time (8:00 PM–8:00 AM). Therefore, the maximum efficiency is recorded 40% for the present system in daytime, 36% in nighttime, and 25% for conventional solar still. COP increases with inside temperature (Ti), however it decreases with outside temperature (Tamb). The average cost of one liter of distillate water from the present combined system = 0.021441 (LE).

scholarly journals Exergy and Energy Analysis of a Tubular Solar Still with and without Fins: Comparative Theoretical and Experimental Approach

2021 ◽  
Author(s):  
Prof. Dr. Ravishankar Sathyamurthy ◽  
Abd Elnaby Kabeel ◽  
Ali Chamkha ◽  
Hemanth Arun Kumar ◽  
Hariprasath Venkateswaran ◽  
...  
Keyword(s):  
Experimental Study ◽  
Experimental Approach ◽  
Energy Analysis ◽  
Pure Water ◽  
Exergy Efficiency ◽  
Clean Water ◽  
Solar Still ◽  
Rapid Urbanization

Abstract Today, availability of clean water is hard as the residents are expanding and moving fast to achieve rapid urbanization as a result need for clean water has been raised. Solar stills are the solution to desalinate to obtain pure water. This paper represents the theoretical and experimental study of tubular solar still with and without fins. The reading was recorded from 8:00 AM to 6:00 PM. Efficiency of TSS with fins and without fins are 23.39% and 13.76% respectively. The rate of irreversibility from the basin of TSS with flat is higher than TSS with finned absorber. Similarly, the rate of irreversibility from water is significantly reduced using finned absorber. Also, the exergy efficiency of TSS with finned absorber is higher compared to TSS with flat absorber.

scholarly journals AN EXPERIMENTAL STUDY ON THE PERFORMANCE OF VERTICAL BASIN SOLAR STILL

2017 ◽  
Vol 13 (7) ◽  
pp. 6356-6362
Author(s):  
T.V. Arjunan ◽  
T.G. Sakthivel
Keyword(s):  
Experimental Study ◽  
Heat Loss ◽  
Experimental Approach ◽  
Experimental System ◽  
Outer Wall ◽  
Effective Area ◽  
Heat Energy ◽  
Optimum Thickness ◽  
Solar Still ◽  
Transparent Glass

In the present study, a new experimental approach is proposed to enhance the performances of the conventional single slope solar still using vertical basin at inner wall surfaces. Main objectives of this study are, to increase the distilled output of solar still by utilizing heat energy available inside vertical surfaces and to find out the optimum thickness of vertical basin experimentally. The experimental system involves six identical solar stills, one of the stills is conventional and remaining stills have vertical basin with different thicknesses (3, 6,9,12 and 15 mm). Solar stills are fabricated with an effective area of 0.009 m2 and the transparent glass angle is 11°. The experiments were conducted on 19.02.2016 with depth of water 20 mm. The results show that (i) productivity of vertical basin solar stills are higher than the conventional still, (ii) heat loss from inner wall surfaces to outer wall surfaces are reduced considerably in vertical basin still  (iii) optimum thickness of vertical basin is 12 mm. To conclude introducing vertical basin in conventional still improves the performance of the still.

scholarly journals Effect of glass thickness on performance of double slope inward solar desalination still for fresh water production

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
C.K. Sivakumar ◽  
Y. Robinson ◽  
K. Saravanakumar
Keyword(s):  
Solar Energy ◽  
Fresh Water ◽  
Water Productivity ◽  
Heat Losses ◽  
Water Production ◽  
Solar Still ◽  
Glass Material ◽  
Glass Thickness ◽  
Solar Desalination

This paper deals with the effect of thickness of glass material which covered on double slope solar desalination still, performance of the solar still affected by thickness of the glass, which result in to major heat losses in the system. Two inward double slope desalination still with different glass thickness were designed, constructed and experimentally tested their performance. The glasses are inclined 200 from the center of the still. The solar energy collecting area of still is 1m2.The result shows that the variation in glass thickness will affect the efficiency of the still, desalination still with 4mm thickness gives 48% higher fresh water productivity compare to 6mm glass thickness.

scholarly journals Experimental Study of Solar Still Under Influence of Various Conditions

2019 ◽  
Vol 25 (2) ◽  
pp. 57-71
Author(s):  
Mowaffaq Ali Hammadi ◽  
Najim Abid Jasim
Keyword(s):  
Experimental Study ◽  
Water Level ◽  
Thermal Insulation ◽  
Experimental Tests ◽  
Experimental Results ◽  
Solar Still ◽  
Solar Desalination ◽  
Level Increase ◽  
Passive Solar

In the present work, experimental tests was done to explain the effect of insulation and water level on the yield output. Linear basin, single slope solar still used to do this purpose. The test was done from May to August 2017 in Mosul City-Iraq (Latitude: Longitude: Elevation: 200 m, and  South-East face). Experimental results showed that the yield output of the still increased by 20.785% and 19.864% in case of using thermal insulation at 4cm and 5cm respectively, also the yield output decrease by 15.134% as the water level increase from 4 to 5cm, with the presence of insulation and 14.147% without it. It has been conclude that the insulation and water level play important role in the process of passive solar desalination, also the desalination process has significant value at night and cannot be ignored.  

scholarly journals An experimental study of the motion of ice past obstacles by the process of regelation

1976 ◽  
Vol 17 (75) ◽  
pp. 79-98 ◽  
Author(s):  
E. M. Morris
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Cross Sections ◽  
Transition Point ◽  
Water Layer ◽  
Single Object ◽  
Two Systems ◽  
Basal Sliding

AbstractThe results of regelation experiments, in which a single object is pulled through ice, cannot be applied directly to the problem of basal sliding in glaciers because the two systems have different geometries. When the force applied to a single object is small, impurities trapped in the regelation water-layer around the object inhibit the regelation process. At larger forces, above the Drake-Shreve transition point, impurities are shed in a trace behind the object. However, when ice moves over a series of obstacles a trace may exist above and below the transition point. The regelation velocity below the transition point is not reduced by the effect of trapped impurities. In an experiment in which brass cylingerrs of various cross-sections rotate in ice, the ratio between the expected regelation velocity, calculated using the basal-sliding theory of Nye, and the measured regelation velocity is 8±2, both above and below the transition point. The same ratio has been obtained by other workers with wires of similar thermal conductivity above the transition point. Measurements of température differences indicate that supercooling cannot be the main source of the unexpectedly low regelation velocities above the transition point.

scholarly journals Experimental study and analysis of single slope solar still integrated with Phase Change Material

2021 ◽  
Vol 1059 (1) ◽  
pp. 012010 ◽  
Author(s):  
N Boopalan ◽  
B Kalidasan ◽  
D Raj Kumar ◽  
E Ragupathi ◽  
M Gurumoorthy ◽  
...  
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Solar Still ◽  
Change Material
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