Solar desalination using solar still enhanced by PCM and nano fluid

2020 ◽  
Author(s):  
Karthikeyan Alagu ◽  
M. Siva Reddy ◽  
M. Narendra Kumar ◽  
Anderson Arul Gnana Dhas
Keyword(s):  
Solar Still ◽  
Nano Fluid ◽  
Solar Desalination

scholarly journals Production rate and cost comparison of ceramic block solar desalination unit (CBSDU) with basin type solar still (BSS)

2016 ◽  
Vol 4 (2) ◽  
pp. 72
Author(s):  
Md Hamidul Islam ◽  
Quazi Hamidul Bari ◽  
Md Shafiqul Islam
Keyword(s):  
Cost Comparison ◽  
Distilled Water ◽  
Solar Still ◽  
Daily Production ◽  
Ceramic Block ◽  
Solar Desalination ◽  
Concrete Base ◽  
Coastal Belt ◽  
Average Production ◽  
Installation Cost

Distilled water for drinking purposes is vital especially in semi or arid countries where surface water is limited and groundwater is saline. The ceramic block solar desalination unit (CBSDU) is significant for single household in developing countries like Bangladesh. The aims of this study are to monitor daily production and cost compared with basin type solar still (BSS). The materials and installation cost of the ceramic block solar unit was estimated Tk.40 per solar desalination unit. The field experiment was carried out on the roof top of the civil engineering building, KUET from 24th February to 11th June, 2012. The CBSDU was installed perpendicular to the surface, from 2 feet above the surface, on a concrete base. The collection bottle was put under the concrete base. The distilled water was collected every day at least two hours after sunset. The average production was found 4.26 lit/m2/day. The CBSDU offers 12% less cost than BSS. Single household can easily use CBSDU for their drinking water in coastal belt of Bangladesh.

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).

Thermal Modeling, Experimental Validation, and Comparative Analysis of Modified Solar Stills

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Piyush Pal ◽  
Rahul Dev
Keyword(s):  
Comparative Analysis ◽  
Thermal Modeling ◽  
Uttar Pradesh ◽  
Solar Still ◽  
Solar Desalination ◽  
Low Efficiency ◽  
Basin Area ◽  
Evaluation Parameters ◽  
Theoretical Results ◽  
Good Agreement

AbstractIn the present work, an effort is carried out to enhance the distillate yield of a single-slope basin-type solar still by increasing the heat input through its transparent walls and providing hanging wicks to increase the evaporation–condensation rates. A modified basin-type single-slope multi-wick solar still (MBSSMWSS) was proposed and fabricated to increase the productivity and improve the low efficiency of the recently designed modified basin-type single-slope solar still (MBSSSS). Experiments were conducted on both the solar stills to assess their performance, productivity, and efficiency (thermal and exergy) for the same basin area and water depth for the climatic condition of Prayagraj, Uttar Pradesh (U.P.), India. Results showed that the productivity, overall energy (thermal) efficiency, and maximum values of measured instantaneous exergy efficiency of the MBSSSS and MBSSMWSS systems were found to be 3.2 l/m2 day and 4.22 l/m2 day, 18.16% and 26.89%, and 4.28% and 5.31%, respectively. Furthermore, thermal modeling was also done using the energy balance equations, and then, a theoretical analysis was carried out to validate with the respective experimental observations. A good agreement was found between experimental and theoretical results. Finally, based on the results of the evaluation parameters and comparative analysis, the modified solar still with wick was found to be a better system compared with that of the system without wick and might be a good option as a solar desalination system.

A review on various designs of solar still

2021 ◽  
pp. 1-22
Author(s):  
Md. Raquibul Hasan
Keyword(s):  
Drinking Water ◽  
Brackish Water ◽  
Potable Water ◽  
Saline Water ◽  
Operating Parameters ◽  
Solar Still ◽  
Water Distillation ◽  
Solar Desalination ◽  
Drinking Purposes ◽  
Day By Day

The availability of drinking water is reducing day by day, whereas the freshwater necessity is tremendously increasing. There is a need for some sustainable water distillation (purification) to overcome this problem. Solar desalination is a technique used to convert brackish or saline water into potable water, and solar still is a useful device to distil brackish water for drinking purposes. Numerous designs of the solar still system have been developed worldwide. Many researchers outlined mathematical terms, performed experiments and validated the outcome from the various types of solar stills by varying the design and operating parameters. In this article, a review of the active and passive solar stills' performance has been carried out.

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