scholarly journals Experimentally Investigated the Development and Performance of a Parabolic Trough Solar Water Distillation Unit Concerning Angle-Wise

2021 ◽  
Author(s):  
Fahim Ullah
Keyword(s):  
Solar Radiation ◽  
Payback Period ◽  
Unit Price ◽  
Distillation Unit ◽  
Distilled Water ◽  
Solar Still ◽  
Water Distillation ◽  
Solar Water ◽  
Average Unit ◽  
And Performance

The PTC performance was evaluated at four (i.e., 25o, 35o, 45o, and 55o) different adjusting Angles and it clearly showed that the adjusting Angles is highly significant, affecting the efficiency of the collector. The PTC received mean solar radiation 513 kJ.m-2.hr-1 with the absorbing temperature of the absorber in PTC was noted 123oC, 115oC, and 113oC consecutively the months of the year with the adjusting angles of 25o, 35o, and 45o respectively. Distilled water from the solar water distillation unit was found to improve the laboratory’s quality and wash equipment in the hospital. PTC’s efficiency noted 26.9%, 26.3%, and 26.1% with the distilled water up to 217, 313, and 343 ml.m-2.day-1 for the adjusting Angles of 25o, 45o, and 35o respectively. From the result, it concluded that to obtain maximum distilled water, the PTC should be set on adjusting Angles of 25o, 35o, and 45o. The average unit price of distillate from the solar still is assessed as Rs. 2.64/L-m2 with a payback period is 365 days. The unit distillate cost is seen to reduce significantly from Rs. 4.92/L to Rs. 1.57/L. It concluded from results that the distilled water of PTC relatively decent quality.

scholarly journals AUGMENTATION OF SOLAR WATER DISTILLER PERFORMANCE WITH PV/T

2020 ◽  
Vol 5 (1) ◽  
pp. 46-52
Author(s):  
Nguyen Viet Linh Le ◽  
Tri Hieu Le ◽  
Thi Minh Hao Dong ◽  
Van Vang Le ◽  
Dinh Tung
Keyword(s):  
Solar Collector ◽  
Solar Photovoltaic ◽  
Solar Still ◽  
Photovoltaic Panel ◽  
Water Distillation ◽  
Solar Water ◽  
Photovoltaic Modules ◽  
Solar Distillation ◽  
Distillate Yield ◽  
Flat Plate Collector

Recently, due to global warming and urbanization, there are many major cities that may face the challenge of day zero next decades. Obviously, water is an indispensable component for maintaining life on the earth. Although portable water is required of the hour, the quantity of available freshwater is impacted significantly by sea-level rise and pollution from industrialization. As a consequence of the global water crisis, different methods for clean water production from brackish water have been studied and developed in practice, however, the solar distillation of water is the most economical and desirable approach due to this method utilize solar energy that is the environmentally friendly and economical resource. Over the last 15 years, the impressive price drop of the photovoltaic solar collector (PV/T) makes them popular and easy to access. As a result, the employment of PV/T in solar stills is emerging as a potential device for water distillation. Therefore, in this paper, an active solar distiller combined with a photovoltaic panel has been reviewed for improvement of the distillate yield and effectiveness of solar photovoltaic. This review work presents a variety of studies on various types of solar still (for example conventional solar still (CSS), double slope solar still (DSSS), stepped solar distiller, and cascade solar still) couples with different solar water collectors (such as flat plate collector (FPC) and evacuated tubes collector (ETC)) and solar photovoltaic modules. It is obtained that the hybrid PV/T active solar still improves the distillate yield, energy efficiency, and exergy efficiency as compared to passive mode. The cooling method enhances the performance of the photovoltaic solar collector as well as the productivity of solar still. Moreover, the environmental economic estimation reveals that the solar still coupled with the PV/T mitigated considerably the amount of CO2. It can be stated that it is suitable to commercialize the hybrid PV/T active solar still for supplying not only electricity but drinking water also. Finally, this review paper also suggests the scope for the research in the future.

scholarly journals Experimental Optimization of a Solar Distillation Unit

2019 ◽  
Vol 8 (2) ◽  
pp. 6238-6243
Keyword(s):  
Salt Concentration ◽  
Rural Areas ◽  
Base Plate ◽  
Incident Radiation ◽  
Distillation Unit ◽  
Solar Still ◽  
Water Distillation ◽  
Solar Distillation ◽  
Water Base ◽  
Energy Absorbing

Today global warming is a big issue. Ambient temperature have drastically increased, leading to severe droughts especially in those areas which receive less than average rainfall. Inadequate supply of quality drinking water especially in the rural areas have led to develop a distillation system with affordable cost and less maintenance in rural areas. Countries like India and South Africa are getting ample amount of solar energy almost throughout the year. Solar based water distillation unit- Solar still can be great solution to those kind of areas. Efficiency of the solar distillation can be improved by increasing evaporation rate which is a function of incident radiation. Further by increasing concentration of total dissolved salts in the water, base plate absorptivity and efficient energy absorbing material, by providing additional heat with solar water pre-heaters efficiency of solar still can be improved. Here experiments were carried out in order to find out optimum water bath depth and salt concentration in water in solar still for maximizing the yield. Experiments are also carried out by adding heat storage material and effect of salt concentration on yield.

scholarly journals Performance Evaluation and Economic Analysis of Stepped Solar Still with Wire Mesh

2020 ◽  
Vol 8 (10S2) ◽  
pp. 100-109
Keyword(s):  
Performance Evaluation ◽  
Economic Analysis ◽  
Water Purification ◽  
Salt Water ◽  
Wire Mesh ◽  
Distilled Water ◽  
Solar Still ◽  
Green Method ◽  
Water Distillation ◽  
Evaporation And Condensation

Pure and distilled water is now serving as a basic daily necessity for human being functionality. Solar energy is widely being used for purifying the salt water with basic fundamental of evaporation and condensation through a solar still which captures the sunrays, evaporates the seawater, condensate the vapors and purifies the water. This method is the widely used green method for water distillation via set ups. This paper concentrates at water purification by modified stepped solar still with wire mesh and comparing it with a conventional still. Still with 4 steps with depth of 5 mm and 120 mm wide were fabricated on modified still. The efficiency of stepped stiller was altered up to 30.72%and the amount of distillate obtained was 1932 ml/m2 /day in case of conventional distillerand 2800 ml/m2 /day was for stepped one.

scholarly journals Project and Implementation of an Educational Large-Scale Water Distillation Unit with a Closed-Circuit Condenser

2020 ◽  
Vol 12 (8) ◽  
pp. 3239
Author(s):  
Luís Carlos Matos ◽  
Ana Eulálio ◽  
Tiago Antunes ◽  
José Miguel Loureiro ◽  
Alexandre Ferreira ◽  
...  
Keyword(s):  
Fresh Water ◽  
Large Scale ◽  
Electrical Power ◽  
Closed Circuit ◽  
Distillation Unit ◽  
Distilled Water ◽  
Water Distillation ◽  
The World ◽  
Construction Optimization ◽  
Design Construction

Water is one of the scarcest resources in the world, and it is becoming rarer fast, year after year. Chemical engineers are particularly suited to addressing the challenges of saving water and producing more fresh water. Proper education is then critical to prepare them for the upcoming decades. All student laboratories need distilled water, which is typically produced using commercial distillation units, which consume up to 70 L of fresh water per liter of distillated water. This work reports the design, construction, optimization, and operation of a water distillation unit that produces 10 liters per hour at 4 µS∙cm−1 and wastes no fresh water. Developed by a committed team made up of students, lab technicians, and instructors, this unit saves ca. 550 m3 of fresh water annually while spending less electrical power.

scholarly journals Computer-Aided Design, Modeling and Simulation of a New Solar Still Design

2011 ◽  
Vol 2011 ◽  
pp. 1-5
Author(s):  
Jeremy (Zheng) Li
Keyword(s):  
Modeling And Simulation ◽  
Computer Aided Design ◽  
Pure Water ◽  
Computational Simulation ◽  
Water Desalination ◽  
Solar Still ◽  
Water Distillation ◽  
Solar Water ◽  
Distillation System ◽  
Computer Aided

The clean and pure drinking water is important in today's life but current water sources are usually brackish with bacteria that cannot be used for drinking. About 78% of water available in the sea is salty, 21% of water is brackish, and only 1% of water is fresh. Distillation is one of the feasible processes applied to water purification, and it requires the energy inputs, such as solar radiation. Water is evaporated in this distillation process and water vapor can be separated and condensed to pure water. Now, with the change from conventional fuels to renewable and environment friendly fuels sources, the modern technology allows to use the abundant energy from the sun. It is better to use solar energy to process the water desalination since it is more economical than the use of conventional energies. The main focus of this paper is applying computer-aided modeling and simulation to design a less complex solar water distillation system. The prototype of this solar still system is also built to verify its feasibility, functionality, and reliability. The computational simulation and prototype testing show the reliability and proper functionality of this solar water distillation system.

scholarly journals Experiments for calculating Properties of Distilled Water from Solar Still and Potable water from Reverse Osmosis Process

2019 ◽  
Vol 8 (4) ◽  
pp. 1780-1785
Keyword(s):  
Thermal Conductivity ◽  
Comparative Analysis ◽  
Solar Radiation ◽  
Reverse Osmosis ◽  
Potable Water ◽  
Ph Value ◽  
Total Dissolved Solids ◽  
Distilled Water ◽  
Solar Still ◽  
Absorber Plate

Solar stills absorb solar radiation convert brackish water into distilled water. In this project, a comparative analysis between the properties of distilled water from solar still and potable water from reverse osmosis process has been carried out. Two metals (Aluminium and GI sheet) and Granite stone are used as absorber plates. The water properties collected from three different absorber plates are compared with the potable water that obtained from reverse osmosis process. Based on the amount of water collected, thermal conductivity is analyzed between three absorber plate materials. An analysis on pH value, total dissolved solids, hardness dissolved oxygen between distilled water from solar still and potable water from reverse osmosis process is also evaluated.

scholarly journals PERFORMANCE ENHANCEMENT OF SOLAR STILL BY USING REFLECTORS-JUTE CLOTH-IMPROVED GLASS ANGLE

2019 ◽  
Vol 16 (1) ◽  
pp. 1 ◽  
Author(s):  
Bibhuti Sahoo ◽  
Chandana Subudhi
Keyword(s):  
Solar Radiation ◽  
Water Flow ◽  
Performance Enhancement ◽  
Water Productivity ◽  
Additional Cost ◽  
Solar Still ◽  
Flow Properties ◽  
Jute Cloth ◽  
And Performance

This paper is aimed to improve the productivity of an existing conventional single slope solar still with modifications. In this study, the conventional solar still is modified by using reflectors, jute cloth and improved glass angle. The modified still productivity and performance are investigated experimentally and compared to that of conventional solar still.  The results demonstrated that solar still performance is improved with the 10o glass angle due to better water flow properties and higher solar radiation fall on the still. The results reveal that, with all combined modifications, the water productivity and efficiency of modified solar still  increase by 72.18% and 41.51% respectively more than the conventional one. This implies that modified solar still could be adopted for higher water productivity at a lower additional cost.

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