A new design of a stepped solar desalination system with a flashing chamber was. It also contains the basic material on matrices and their arithmetic properties. Chapter 1 deals with systems of linear equations, how to solve them, and some of their properties. Technical and economic assessment of adobe as the primary. High efficiency semiconductor based solar cells thesis of. A solar still is a simple way of distilling water, using the heat of the sun to drive evaporation from humid soil, and ambient air to cool a condenser film. That fact has not been truly changed since then, although some improvements have been made. An analysis of pv solar electrification on rural livelihood transformation a case of kisijupwani in mkuranga district, tanzania bernard matungwa thesis submitted in partial fulfillment of the requirements for the degree of master of philosophy in culture, environment and sustainability centre for development and the environment. Development of vertical diffusion solar still utilizing folded sheets technology by amr mohamed seleem b. Design of highefficiency dyesensitized nanocrystalline solar cells submitted by halil ibrahim yavuz in partial fulfillment of the requirements for the degree of doctor of philosophy in metallurgical and materials engineering department, middle east technical university by, prof. Previous studies have found that solar disinfection is affected by. So, the engineers try to create a new device that can convert the natural energy to an electrical energy like solar panel for sunlight energy, wind turbines for wind energy, water turbines. But these sources do not always prove to be useful due to the presence of excessive salinity in the water. In order to improve the productivity of a solar still of hotbox type, l.
The method has been shown to reduce the incidence of diarrhea in children living in a massai village in kenya conroy et al. Experimental investigation on a thermal model for a basin solar. In this thesis, a basintype solar still was designed to investigate the effect of sun tracking in the performance of conventional solar. Stationary doublebasin still with flowing water over upper basin. The developed solar desalination system consists of a purposely designed concentrating solar collector and the desalination core which consist of the humidification and dehumidification chambers. A cpc concentric tubular solar still design with a rectangular absorber is presented as shown in figures 11, 12, and 14 and the specification shown in table 1. Illustration of the overall energy balance 32 figure 6. Security and local governance in the interregnum, james robert mcconnell thesis. The novel concentrating vtrough solar collector which has its focal point at the bottom of the concentrator provides enough. Still other proofs are omitted completely, with emphasis placed on applying the theorem. In addition, the fresnel lens can aid in improving the overall efficiency of the solar still. In this thesis, a basintype solar still was designed to investigate the effect of sun tracking in the performance of conventional solar still using actual environmental conditions. Bohra, hereby grant permission to the wallace memorial library of the rochester institute of technology to reproduce this document in whole or in part that any.
Masters thesis thesis submitted in partial fulfilment of the requirements for the degree of master of science in engineering at the university of applied sciences technikum wien, vienna, austria course of studies. Solar pumping systems for surface sources or wells can. Experimental investigation of the performance of basin type singleslope solar still ibrahim u. It has been used for emergency situations including the introduction of inflatable stills for life boats by the navy. William marshal, 2nd earl of pembroke, and the commissioning of the history of william marshal, chloe faith massarello thesis. Solar energy research paper and reflection vanja babunski. Louis is determined by weather conditions and the amount of solar insolation that the area received throughout the year. The monocrystalline solar cells can be operated with same energy recovery in our region. Designing solar water pumping systems for livestock. One of their new and innovative technologies is the microinverter, which converts dc power to ac power on a permodule basis. The only reason solar panels were not implemented or further researched is because of budget limits.
Solar distillation of water florida solar energy center. Pdf performance study on solar still with enhanced condensation. There is a coherent link between the geographical position of the installed solar systems and the global highradiation areas in hngary. Part of theamerican studies commons, and theenvironmental engineering commons this thesis is brought to you for free and open access by the graduate school at scholar commons. Improving the performance of solar stills using sun tracking. Second draft of thesis, still much work is needed to complete it. Solar cooling used for solar air conditioning a clean solution for a big problem stefan bader based on a presentation by dr.
Masters thesis, izmir institute of technology, school of science, izmir, turkey, 2003. Economics for floridians interested in building a solar still, a good design should be capable of producing 2 to 1 gallon of fresh water per day. Solar still,a water purifying technique project report 1. Addi tional references are given in the bibliography at the end of this paper. Humankind has depended for ages on underground water reservoirs for its fresh water needs. Overviewoutline introduction necessity design system development water distillation working advantages disadvantages application 4. The modified solar still consists of five different sizes of glasses and the inside of the still was painted in black colour. Liquid phase epitaxy the most common of the epitaxy methods is the liquid phase epitaxy, if the target is a fast and costefficient development and production of a less complex hetero. The updated suns river solar still operated with nighttime recovery. The solar still technique will work just about anywhere, provided that there is enough sunlight to assist the process.
Nasa images solar system collection ames research center. A solar still desalination system with enhanced productivity. Wshape solar still on concrete with two channel low cost lshape solar still by using wooden strips and aluminum channel l shape solar still was developed with plastic glazing on soil for distilled water output through single channel. The solar industry still has not made its true impact on wider range use and distribution. The current work is concerned with development of a solar desalination still to increase water security in. The greatest potential of solar energy might be in the systems of cooling and heating of homes and industrial buildings. This thesis is concerned with developing and evaluating the two solar desalination unit concepts presented. Pdf water scarcity and pollution pose critical situation in all walks of life especially in the developing countries. Design, prototyping and field testing of solar stills in. Solar stills can be used for low capacity and selfreliance water supplying systems since they can produce drinking water by solar energy only, and. The novel concentrating vtrough solar collector which has its focal point at. Solar still,a water purifying technique project report.
It has been found that the single slope solar still produced 3. Therefore solar panels would be a great idea to research for my thesis. This cover is usually a glass or a plastic sheet where, in the inner face, condensation is produced the side. The use of a highly portable, efficient solar tracker can be very useful to applications of the military, industrial, or residential variety. Design and implementation of a solar power system in rural.
Madhlopa a 2009 development of an advanced passive solar still with separate condenser, phd thesis, university of strathclyde. Hong j 2009 the development, implementation and application of a demand side management and control algorithm for integrated microgeneration within the built environment, phd thesis, university of strathclyde. Solar cooling used for solar air conditioning a clean. Heavy consideration to the localized conditions during the winter has the strongest impact on determining the feasibility of using solar energy in the midwestern. Heat transfer modes for seawater interface 37 figure 6. I have arrived at developing the new high efficiency semiconductor based solar cell via high efficiency heterostructure light emitting devices. Here are simple instructions how to build a solar still to extract pure drinking water from the earth. The power is derived from five 120w photovoltaic bp solar panel units. Malaeb2 3 1civil and environmental engineering, faculty of engineering and architecture, 4 american university of beirut, bliss street, beirut, lebanon 5 2 water desalination and reuse research center, king abdullah university of science and technology. A thermal model for predicting the performance of a solar still with. Mechanical power engineering a thesis submitted in partial fulfillment of the requirements for the degree of master of science in mechanical engineering under the. The solar stills have often been used in the tropics where there is abundant supply of solar energy.
Process development for singlecrystal silicon solar cells. Passive solar still using a regenerative system the regenerative system consists on a flow of water, which runs over the cover of the solar still, aiming for the reduction of the temperature of the same. Horizontal concentric tube solar still 20 figure 5. This paper describes the design and implementation of a solar power system for a school and health center in petitanse, haiti. Renewable urban energy systems at the university of. A solar still will provide you with 100% pure water, and will not require purification or boiling prior to drinking. Development of an advanced passive solar still with separate. A thesis submitted in fulfilment of the requirements for the degree of doctor of.
Technical and economic assessment of adobe as the primary building material on the water yield of a single basin solar still. This thesis covers an extensive solar still product development process. Thesis by katsuaki tanabe in partial fulfillment of the requirements for the degree of doctor of philosophy california institute of technology pasadena, california 2008. Process development for singlecrystal silicon solar cells by mihir h.
Development of an advanced passive solar still with separate condenser. In this paper, the fabrication of seven solar still designs such as spherical solar still, pyramid solar still, hemispherical solar still, double basin glass solar still, concentrator coupled single. The inner and outer circular tubes are positioned with a 5 mm gap for the flowing water and air to cool the outer surface of the inner tube. Theoretical and experimental investigations on solar. Principles of capillary film distiller 26 figure 6. Therefore, three identical simple basin single slope solar stills a, b, and c were constructed and.
Solar disinfection is a water treatment method where a drinking water sample is exposed to solar radiation to inactivate pathogenic organisms. Figure 2 shows a schematic of a passive solar still with regenerative system. The maximum output was found in the fin type solar still. The thesis is the backbone for all the other arguments in your essay, so it has to cover them all. According to the obtained results, one can conclude that water temperature has an. Dualaxis solar tracker worcester polytechnic institute. Description of a singlebasin solar still the simplest design of a solar still consists of a rectangular box with a transparent upper cover as in figure 1. I would also express thanks to my coadviser of thesis prof.
Performance, solar still, experiment, productivity, efficiency, heat losses. The operated solar systems need continuous optimization, where operators have to use a working local pv model. Vacuum tube collectors introduction the global mission, these days, is an extensive reduction in the consumption of fossil energy without any loss in comfort or living standards. A thesis of in partial fulfillment of the requirements for. A project report on solar still submitted in partial fulfillment for the award of the degree of bachelor of technology in mechanical engineering from rajasthan technical university, kota session 2012 guided by. Modification and operation of a full solar distillation desalination. To produce an efficient solar generation system, a scaled down dualaxis solar tracker was designed, built and tested. My thesis explored and expanded beyond the scope of the aforementioned project to research different avenues for improving the efficiency of solar photovoltaic power system from the solar cell level to the solar array mounting, array tracking and dcac inversion system techniques. The enduse applications are lighting via a set of fluorescent and incandescent bulbs, and a coolbox for medical refrigeration at the health center. When these choices are compared, solar pump systems are often the best choice due to the operational conditions inherent to new mexico, which allows them to function effectively and economically foster et al. Masters thesis solar thermal energy research group. Solar stills are cheap and having low maintenance cost but the problem of solar still is the low productivity. Solar radiation can be harnessed and converted to electricity by photovoltaic pv technologies. Experimental investigation of a glass partitioned solar still.
There are two areas of the holiday inn where the use of solar panels could prove to be beneficial. Enphase energy is a solar energy company whose goal is to create intelligent and reliable solar energy systems that can easily be used by anyone who wants to benefit from solar energy. The thesis the battles of bleeding kansas directly affected the civil war, and the south was fighting primarily to protect the institution of slavery doesnt work very well, because the arguments are disjointed and focused on different ideas. An early largescale solar still was built in 1872 to supply a mining community in chile with drinking water. It describes the heat transfer model of a solar still, the energy balances and the results of distillation yield as a function of time. Solar irradiance, inlet and outlet air temperatures and water temperatures of 2 different types of solar stills, 5 different sizes of glasses temperatures and the. In this study, a single slope improved conventional solar still distillation system and simple single slope solar still are studied and compared theoretically and experimentally in mechanical engineering department at emu campus area. I would like to thank my colleague and friend, john carlin, who has a career experience in designing photovoltaic systems.
Also, there is an extensive description of systems, configurations and applications of solar stills along with certain aspects of engineering economics. Paso utep graduate engineer based his masters thesis on heat and material balances. Stability is one of the key points for real world application of solar cells and is mainly related to the processes that regulate the energy conversion, both in longterm degradation. Mayere, abdulkarim 2011 solar powered desalination. Development of vertical diffusion solar still utilizing.
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