Asymmetrical Solar Still with Various Basin Materials

2015 ◽  
Vol 812 ◽  
pp. 14-18 ◽  
Author(s):  
Malaiyappan Prakash ◽  
Elumalai Natarajan
Keyword(s):  
Renewable Energy ◽  
Economic Analysis ◽  
Low Cost ◽  
Weather Conditions ◽  
Insulation Material ◽  
Solar Still ◽  
Local Areas ◽  
Analysis Calculation ◽  
Basin Area

A solar still is efficient and attractive application of renewable energy (solar) in the distillate production. In this work, the solar still with different basin materials viz; plastic, glass, and galvanized iron (GI) with basin area of 1m x1m and slope of 13○ were fabricated and tested in Anna University, Chennai. The basin materials are taken according to the low cost that is easily available in the local areas. The bottom and side losses of the still are considerably reduced, due to the low cost insulation material (thermcol) beneath the basin liner. The stills are experimentally investigated on a clear day (03/04/2014). Comparison of the various basin materials under the same weather conditions is done. A model economic analysis calculation for the asymmetrical single-basin and single-slope solar still is verified.

Asymmetrical Solar still Coupled with the Mini Solar Pond: Performance Evaluation on Clear, Partially Cloudy and Cloudy Days

2015 ◽  
Vol 787 ◽  
pp. 22-26 ◽  
Author(s):  
Prakash Malaiyappan ◽  
Natarajan Elumalai
Keyword(s):  
Heat Transfer ◽  
Performance Evaluation ◽  
Porous Material ◽  
Economic Analysis ◽  
Transfer Rate ◽  
Solar Still ◽  
Black Paint ◽  
Solar Pond ◽  
Analysis Calculation ◽  
Basin Area

A single-slope solar still with the basin area of 1m x1m and slope of 13○ was fabricated and tested in Anna University, Chennai. Both the inner and outer walls were coated with black paint in order to improve the heat transfer rate. The bottom and side losses of the still are considerably reduced, due to the porous material beneath the basin liner. Effect of solar pond coupled with the still are experimentally investigated on a clear, partially cloudy and cloudy days and found that clear day has the maximum productivity. A model economic analysis calculation for single basin solar still coupled with pond is also done and the results are reported in this paper.

scholarly journals Factorial design of experiment (DOE) for modeling solar still parameters

2020 ◽  
Author(s):  
Malik Al-Abed Allah ◽  
Mohammad Abu Abbas ◽  
Moath Maqableh
Keyword(s):  
Solar Radiation ◽  
Water Depth ◽  
High Performance ◽  
Saline Water ◽  
Pure Water ◽  
Computing Time ◽  
Insulation Material ◽  
Solar Still ◽  
Effective Parameters ◽  
Basin Area

Abstract. Water scarcity is a major threat to the future due to the fact that the pollution rate of freshwater resources is getting increased rapidly. At the same time, the level of water usage is dramatically increased. Hence, to fulfill the water demand, converting the brackish, saline water into pure water is one of the viable solutions. Desalination using solar still is a simple technique among various techniques available for salinity removal. Researchers have consistently attempted to improve the performance of solar stills due to poor productivity. This article highlights various factors that have an impact on the performance of the solar still such as solar radiation, basin area, saline water depth, insulation material, the thickness of glass cover, and wind speed. In order to achieve high performance via optimization of the effected parameters required for solar still, the design of experiments (DOE) can determine the most effective parameters and eliminate the least important ones. Moreover, solar still is often complex and time-consuming due to the various parameters that must be taken into consideration. Furthermore, this research focuses on reducing the computing time and determines the most significant parameters of the solar still, such as Basin area, saline water depth, and solar radiation. The theoretical results demonstrate that the most important factor that affects solar still productivity is basin area, saline water depth, and solar radiation respectively. While the insulation thermal conductivity, ambient temperature, and glass thickness have no effect on the performance of still.

scholarly journals Marketing of renewable energy sources

2020 ◽  
Vol 175 ◽  
pp. 14006
Author(s):  
Yaroslav Lavrinenko ◽  
Victoria Tinyakova ◽  
Larisa Shishkina ◽  
Ruben Partevian
Keyword(s):  
Renewable Energy ◽  
Alternative Energy ◽  
Raw Materials ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Energy Sources ◽  
Utilization Rate ◽  
Installed Capacity

The article discusses the importance of marketing in the market of renewable energy sources. Alternative energy and its development significantly depend on the country and the climatic conditions of a particular area. In Russia, alternative energy, its development, lags behind world leaders. There are several reasons for this. The first reason is the large reserves of fuel and energy raw materials and their low cost. The second reason is the low utilization rate of the installed capacity of alternative energy. The third reason is that the weather conditions in Russia are nonhomogeneous and not very suitable for the development of alternative energy. A promising direction for the development of alternative energy is small alternative energy. Marketing is built on effective market segmentation, increasing end-user awareness and customer education efforts. The article also provides recommendations for improving the effectiveness of marketing, its special features, taking into account altruism, paternalism and moral satisfaction ofcustomers.

Mathematical modelling and experimental study of a solar distillation system

2011 ◽  
Vol 225 (5) ◽  
pp. 1203-1212 ◽  
Author(s):  
O Mahian ◽  
A Kianifar
Keyword(s):  
Mathematical Model ◽  
Wind Velocity ◽  
Low Cost ◽  
Solar Still ◽  
Solar Distillation ◽  
Distillation System ◽  
Insulation Thickness ◽  
The Mathematical Model ◽  
Basin Area ◽  
Good Agreement

The production of potable water from saltwater or brackish water using solar distillation has been practised for many years in different parts of the world. However, little attention has been paid to the feasibility of this technique in Iran. In this work, a solar still with a basin area of 0.9 m2 and a glass cover in the form of a pyramid has been designed and constructed, and its performance is studied experimentally in Mashhad, Iran. Also, the performance of the solar still is modelled where a small fan was utilized to enhance the daily productivity of freshwater. In addition to the effect of forced convection caused by a fan, the effects of the water depth, the insulation thickness of the basin base, and the wind velocity have been investigated. The empirical results have been compared with the results obtained from the mathematical model and good agreement has been obtained. The results show that the use of a low-cost fan with negligible power can be an effective and economical way of enhancing the evaporation rate and hence freshwater production. Based on the mathematical model, the daily productivity of freshwater increases up to ∼ 56 per cent at a Reynolds number of 35 000. Finally, an effective range for the wind velocity as well as insulation thickness is presented in order to optimize the production rate of freshwater.

scholarly journals Optimization analysis of active solar still using design of experiment method

2020 ◽  
Author(s):  
Mohammad Omar Abu Abbas ◽  
Malik Yousef Al-Abed Allah ◽  
Qias Nedal Al-Oweiti
Keyword(s):  
Water Temperature ◽  
Saline Water ◽  
Water System ◽  
Ambient Air ◽  
Insulation Material ◽  
Solar Still ◽  
Air Blowing ◽  
External Power ◽  
The Impact ◽  
Basin Area

Abstract. Mathematical model for different configurations of active solar still has been analyzed. Theoretical analysis of energy balance for the active solar still components has been developed. A statistical manner for examination, evaluation, and optimizing the performance of the active solar distillation system with known input factors has been performed using the Design of Experiments (DOE) method. Some processes with input variables (factors), and predicted output variables (responses) have been evaluated. Input factors influencing the responses have been identified. The impact of each variable (factor) and integration of two factors at the same time (called interactions) have been estimated. Influences of various factors on a particular study at a time rather than performing different separated studies have been investigated. 11 variables (basin area, depth of saline water, external power, air blowing system, condenser material, condenser thickness, condenser area, insulation thickness, insulation material, ambient air temperature, and make-up water system ) have been studied to show their effects on three responses (mass output, saline water temperature and condenser cover temperature). The statistical results showed that the most significant factors affected on mass output (distilled water), respectively, were the external power, the depth of the saline water and the basin area of the active still. While the most influence factors affecting the saline water temperature and the condenser cover temperature were the depth of saline water, external power and air blowing system respectively.

scholarly journals Economic Analysis of the Investments in Battery Energy Storage Systems: Review and Current Perspectives

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2503
Author(s):  
Paulo Rotella Junior ◽  
Luiz Célio Souza Rocha ◽  
Sandra Naomi Morioka ◽  
Ivan Bolis ◽  
Gianfranco Chicco ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Economic Analysis ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Residential Areas ◽  
Energy Storage Systems ◽  
Battery Energy Storage ◽  
Battery Energy Storage Systems ◽  
Battery Energy

Sources such as solar and wind energy are intermittent, and this is seen as a barrier to their wide utilization. The increasing grid integration of intermittent renewable energy sources generation significantly changes the scenario of distribution grid operations. Such operational challenges are minimized by the incorporation of the energy storage system, which plays an important role in improving the stability and the reliability of the grid. This study provides the review of the state-of-the-art in the literature on the economic analysis of battery energy storage systems. The paper makes evident the growing interest of batteries as energy storage systems to improve techno-economic viability of renewable energy systems; provides a comprehensive overview of key methodological possibilities for researchers interested in economic analysis of battery energy storage systems; indicates the need to use adequate economic indicators for investment decisions; and identifies key research topics of the analyzed literature: (i) photovoltaic systems with battery energy storage systems for residential areas, (ii) comparison between energy storage technologies, (iii) power quality improvement. The last key contribution is the proposed research agenda.

scholarly journals Technology Pathways and Economic Analysis for Transforming High Temperature to Low Temperature District Heating Systems

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3218
Author(s):  
Pedro Durán ◽  
Herena Torio ◽  
Patrik Schönfeldt ◽  
Peter Klement ◽  
Benedikt Hanke ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Renewable Energy ◽  
High Temperature ◽  
Low Temperature ◽  
Economic Analysis ◽  
District Heating ◽  
Heating System ◽  
District Heating System ◽  
Heating Systems ◽  
District Heating Systems

There are 1454 district heating systems in Germany. Most of them are fossil based and with high temperature levels, which is neither efficient nor sustainable and needs to be changed for reaching the 2050 climate goals. In this paper, we present a case study for transforming a high to low temperature district heating system which is more suitable for renewable energy supply. With the Carnot Toolbox, a dynamic model of a potential district heating system is simulated and then transformed to a low temperature supply. A sensitivity analysis is carried out to see the system performance in case space constrains restrict the transformation. Finally, an economic comparison is performed. Results show that it is technically possible to perform the transformation until a very low temperature system. The use of decentralized renewable sources, decentralized heat storage tanks and the placement of a heat pump on each building are the key points to achieve the transformation. Regarding the sensitivity analysis, the transformation is worth doing until the seasonal storage and solar collector field sizes are reduced to 60% and 80% of their values in the reference case, respectively. The economic analysis shows, however, that it is hard for highly efficient low temperature renewable based heat networks to compete with district heating systems based on a centralized fossile CHP solution. Thus, though the presented transformation is technically possible, there is a strong need to change existing economic schemes and policies for fostering a stronger promotion of renewable energy policies in the heat sector.

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