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Letteratura scientifica selezionata sul tema "SOLAR DISTILLATION SYSTEM"

Autore: Grafiati

Pubblicato: 11 settembre 2023

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Articoli di riviste sul tema "SOLAR DISTILLATION SYSTEM"

Prabhakaran, R. "Solar Distillation System". International Journal for Research in Applied Science and Engineering Technology 7, n. 3 (31 marzo 2019): 2305–7. http://dx.doi.org/10.22214/ijraset.2019.3422.

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Hussain, Zawar, Anjum Munir, Junping Liu e Muhammad Sultan. "Experimental study on solar distillation system for oil extraction from eucalyptus plant leaves". Thermal Science, n. 00 (2021): 340. http://dx.doi.org/10.2298/tsci210905340h.

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Most of the industrial process requires a temperature level below 250?C which is easily achievable using solar energy. Pakistan is fortunate enough to have long sunlight hours and high intensity of solar insolation. The mean total irradiation falling on a horizontal plane is about 200-250 Watt per m2 per day. This precious source of natural energy has tremendous potential in the agro-based industry like the distillation of medicinal plants. The main objective of this study was to conduct a Quantitative and Qualitative analyses of solar distilled oil of the medicinal plant. Solar distillation systems had been installed at Agricultural Engineering Workshop, Faculty of Agricultural Engineering and Technology and Rosa Lab, Institute of Horticultural Sciences, University of Agriculture Faisalabad. This distillation system was designed according to the latitude of Faisalabad. This system comprised of primary reflector, secondary reflector, condenser, and Florentine flask. In this study Eucalyptus Camaldulensis and Eucalyptus Citriodora, essential oils were distilled by solar distillation system and by a conventional distillation system for comparing the results. GC-MS analysis of Eucalyptus Camaldulensis and Eucalyptus Citriodora essential oils were carried out at National Institute of Biotechnology and Genetic Engineering (NIBGE), Faisalabad. The results of quantitative and qualitative analyses of essential oils showed that the quantity and the quality of essential oils of same species of Eucalyptus, distilled by Solar distillation system and conventional controlled distillation system were same. So, it was concluded that the quality and quantity of essential oils of same species don?t differ significantly either distilled by solar distillation system or by conventional controlled distillation system.

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Benziger, Jay. "The Borexino purification system". International Journal of Modern Physics A 29, n. 16 (17 giugno 2014): 1442002. http://dx.doi.org/10.1142/s0217751x14420020.

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Purification of 278 tons of liquid scintillator and 889 tons of buffer shielding for the Borexino solar neutrino detector is performed with a system of combined distillation, water extraction, gas stripping and filtration. The purification system removed K , U and Th by distillation of the pseudocumene solvent and the PPO fluor. Noble gases, Rn , Kr and Ar were removed by gas stripping. Distillation was also employed to remove optical impurities and reduce the attenuation of scintillation light. The success of the purification system has facilitated the first time real time detection of low energy solar neutrinos.

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Al-Nimr, Moh'd A., Suhil M. Kiwan e Samer Talafha. "Hybrid solar-wind water distillation system". Desalination 395 (ottobre 2016): 33–40. http://dx.doi.org/10.1016/j.desal.2016.05.018.

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Koschikowski, J., M. Wieghaus e M. Rommel. "Solar thermal driven desalination plants based on membrane distillation". Water Supply 3, n. 5-6 (1 dicembre 2003): 49–55. http://dx.doi.org/10.2166/ws.2003.0149.

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In arid and semi-arid regions the lack of drinkable water often corresponds with a high solar insolation. These conditions are favourable for the use of solar energy as the driving force for water treatment systems. Especially in remote rural areas with low infrastructure and without connection to a grid, smallscale, stand-alone operating systems for the desalination of brackish water from wells or salt water from the sea are desirable to provide settlements with clean potable water. Fraunhofer Institut für Solare Energiesysteme is currently developing a solar thermally driven stand alone desalination system. The aim is to develop systems for a capacity range of 0.2 to 10 m3/day. Technical simplicity, long maintenance-free operation periods and high quality potable water output are very important aims for successful applications of the systems. The separation technique that the system is based on is membrane distillation. The implemented heat source is a corrosion-free, sea water resistant thermal collector.

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Caturwati, Ni Ketut, Imron Rosyadi, Yusvardi Yusuf e Ehsan Tri Saputra. "Lauric Acid as an Energy Storage Material to Increase Distillation Solar Productivity in Indonesia". Materials Science Forum 1057 (31 marzo 2022): 144–51. http://dx.doi.org/10.4028/p-11m66k.

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The use of energy storage materials in a solar distillation system is intended to increase condensate production by making changes in the temperature of the system change slowly, not following fluctuations in the intensity of solar radiation that can change quickly and drastically. One of the effective energy storage systems is the use of Phase Change Materials (PCMs), materials that involve a phase change process in storing and releasing heat, because the latent heat involved in the phase change process has a large enough value under constant temperature conditions so that temperature stability in the system is achieved. The choice of PCM type used in solar distillation is determined by the average temperature that can be reached by the water in the basin, which is strongly influenced by local environmental conditions. This study compares the productivity of the distillate produced by the double slope solar distillation system that uses Lauric Acid as PCM and that does not use PCM. Both studies were conducted at the same time. The optimal amount of LA that must be added to the solar distillation system to get the highest increase in condensate production value is 7.54 kg of Lauric Acid for 64.8 kg of raw water..

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Tiwari, G. N., Pankaj Saxena e K. Thakur. "Thermal analysis of active solar distillation system". Energy Conversion and Management 35, n. 1 (gennaio 1994): 51–59. http://dx.doi.org/10.1016/0196-8904(94)90081-7.

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Getachew, Seyoum, Addisu Bekele e Vivek Pandey. "Performance Investigation of Ethiopian Local Drinking Alcohol Distillation System Using Solar Dish Concentrator". Journal of Energy 2022 (11 aprile 2022): 1–8. http://dx.doi.org/10.1155/2022/8478276.

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In Ethiopia, in addition to the large quantity of biomass consumption per year for daily cooking, production of the traditional local “Areke” consumes large amounts of fire wood which further accelerates deforestation. This study introduces solar-based technology for distillation of the local “Areke” using an indirect heating system. A solar parabolic dish collector with an aperture diameter of 0.9 m and an improved truncated cone cavity absorber were installed. The heat transfer process is governed by the principle of natural circulation, boiling, and condensation between a receiver and a distillation column. The experiment was conducted in Debre Birhan city at 20°C ambient temperature and atmospheric pressure of 0.722 atm. The surface temperature of the truncated cone cavity absorber attained a maximum temperature of 300.3°C, and the thermal efficiency attained by the collector was 54.6%. The production efficiency of the solar thermal local alcohol “Areke” distillation system was found to increase by 1.67% compared to the traditional firewood distillation system.

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Zarzoum, K., M. M. Alquraish, K. Zhani e H. Ben Bacha. "Experimental validation of membrane distillation unit coupled with direct contact membrane using solar energy". International Journal of Low-Carbon Technologies 18 (2023): 542–53. http://dx.doi.org/10.1093/ijlct/ctad011.

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Abstract This paper presents an experimental validation of membrane distillation unit using solar energy which is coupled with direct contact membrane, which is placed at Kairouan University, Tunisia (35 N, 10 E) and tested on several sunny days. This unit is located as part of a cooperation project research and development between German Institute for Solar Energy Systems and Tunisian Electromechanical Systems Laboratory named: Solar driven membrane distillation for resource efficient desalination in remote areas. A theoretical model investigation as well as experimental is carried out. A mathematical model based on heat and mass transfers of the membrane distillation unit has been presented in this paper. The obtained global model of the membrane distillation unit has been converted to a set of algebraic system of equations to render them ordinary. To compare the experimental and numerical data of the mathematical model of the membrane distillation unit an example of the validation process that has been presented to assess the credibility of the obtained numerical model of membrane distillation unit, a laptop simulation program based on the global model of the unit is simulated by C++ software to solve the model of solar irradiation and all temperature on the journal productivity of the membrane distillation unit. It was shown by this study that the global mathematical model of the unit is able to predict accurately the trends of the thermal characteristic of the membrane distillation unit.

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Dardouch, J., M. Charia e A. Bernatchou. "Numerical study of a Solar Absorption Refrigeration Machine". E3S Web of Conferences 150 (2020): 01009. http://dx.doi.org/10.1051/e3sconf/202015001009.

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In this paper, we present a numerical study of a single-stage absorption refrigeration machine, operating with a couple of water-ammonia fluids, equipped with a distillation column and associated with a solar heating system using solar collectors. The study has showed the benefit of using the distillation column which is manifested by: The decrease of the operating temperature, The improvement of the coefficient of performance, Surface reduction of the solar collectors, The improvement of the solar coefficient of performance. The solar study shows that the absorption refrigeration machine equipped with a distillation column is better suited to solar energy with significantly better performance compared to the simple absorption refrigeration machine.

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Più fonti

Tesi sul tema "SOLAR DISTILLATION SYSTEM"

Al-Madhhachi, Hayder. "Solar powered thermoelectric distillation system". Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/107598/.

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An efficient thermoelectric distillation system was designed, constructed and tested. The unique aspect of this design is to use the waste heat from the hot side of thermoelectric module for heating of the feed water, to improve the evaporation while using the cold side of the module to cool the condenser and improve the condensation process. The developed thermoelectric distillation system produces 28.5 mL of distilled water (equivalent to 678 mL/m2) over a period of 1 hour. The corresponding electrical energy required for the water production is 0.0324 kWh, which gives a specific energy consumption of 0.00114 kWh/mL. The developed system in this research has significantly lower energy consumption than the existing thermoelectric distillation systems. The transient to steady state behaviour of the developed thermoelectric distillation system was investigated. It was found that the system reaches steady state after approximately three hours of the system operation. The water temperature in evaporation chamber was increased from 22.3 oC to 47.8 oC. Similarly, the vapour temperature was increased moderately from 20.3 oC to 30.4 oC. The steady state water production, humidity, energy consumption and COP of the thermoelectric distillation system were 15.3 mL/h, 81%, 0.0324 kWh and 1.04, respectively. Thermal models have been developed through water-vapour phase-change theory to interpret the evaporation and condensation processes involved in the fresh water production of the thermoelectric distillation system. The first model was related to the evaporation process to determine the vapour production in the system. A theoretical distillation ratio of 12% was obtained, with a predicted water temperature of 42.7 oC. This is in reasonable agreement with the 9.5% value experimentally obtained. The second ii model has been developed for the water condensation process. The developed model can be used for determining the key parameters that control the condensation processes and the system thermal performance. This model shows that the rate of water condensation is dependent upon the convection heat transfer coefficient of the cold-side heat exchanger. The fitted value of the convection heat transfer coefficient in the thermoelectric distillation system is 8 W/m2.K. Key factors that influence the total water production and water production rate have been investigated, including sample water temperature, vapour volume at sample water level, Peltier current and thermoelectric input power. The experimental data shows that an increase in sample water temperature from 30 oC to 60 oC gives a 47 % increase in total water production. Peltier current is demonstrated as a control factor in the design of an effective thermoelectric distillation system. The results show that the total water production increases by 61%, when the volume occupied by the vapour is reduced from 600 cm3 to 400 cm3 by increasing the sample water level from 10 mm to 30 mm in the system. The maximum water production is achieved by increasing sample water temperature and the corresponding optimised input power. Measurements of the distilled water show that it has similar quality to drinkable tap water in terms of pH, total dissolved solids and electrical conductivity values. Photovoltaic Geographical Information System was used to estimate the global irradiation per square meter and the solar electricity generation in kWh received by a solar panel in a specific region. Using the experimental prototype, the maximum monthly average water production is 4023.3 mL when using 8.52 kWh of electricity produced during March at the University of Kufa. The minimum average monthly water production is 2970.3 mL using 6.29 kWh of electricity produced during November.

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Mkhize, Mfanafuthi Mthandeni. "Multistage solar still desalination system". Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2848.

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Thesis (Master of Engineering in Mechanical Engineering)--Cape Peninsula University of Technology, 2018.
The present study was centred on the design of a thermal multistage solar still desalination system. The design is a multistage with new configurations such as direct vapour input into each stage using vapour make-up tubes and the integration of a multistage with a basin type solar still. The incorporation of float a valve in the secondary seawater tank to regulate the seawater in the assembly eliminated the need of pumps to the system. The circulation of seawater between the evaporator and the evacuated tube solar collector (ETC) was through the pressure difference and the flow back was controlled through the incorporation of oneway flow valve. The ETC was used as a heat source to supply the thermal energy into the multistage system. The system had no electrical connections and therefore, no forced circulation as no pumps or any electrical components were used. The system consisted of six stages in total, the evaporator supplied the vapour to five of the six stages of the system. The system was tested on the roof of Mechanical Engineering Department and this location was chosen because of less sun’s intensity obstructions. The system was tested for nine (9) days but the distillate collection was not performed for the whole each day. This was due to the controlled access to the roof and the minor repairs that had to occur before the tests were conducted. The duration on which the tests were conducted varied in each day. The data was supposed to be logged from 08h00 am to 18h00 pm but this was not so due to the controlled access to where the tests were conducted. This data logging period was chosen based on the assumptions that the sun’s intensity would be at maximum within this period. The longest period of test was approximately 7 hours and the system managed to produce about 1500 ml and the maximum temperature for the day was 28oC. The system produced a minimum of 225 ml in the space of 3 hours and the temperature of the day was 26oC. The total amount of distillate produced was about 7600 ml and this amount was produced within the period of 49 hours. The 49 hours is equivalent to two days and 1 hour. It is anticipated that the system would have produced more should there be no repairs involved during the tests. The system produced a maximum of 48 ml at night and a minimum of 8ml in some nights. The night tests were not controlled and monitored due to limited access. It was noticed that the system was empty in each morning of the first few days of the tests. This emptiness contributed to the leakage occurred to the evaporator. The leakage of the evaporator was caused by unmonitored heat supplied by the ETC. The evaporator was constructed using unsuitable material and this was another factor which contributed towards the failure of the evaporator.

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Alwaer, Ayad Almakhzum Mohamed. "A prototype desalination system using solar energy and heat pipe technology". Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2455.

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Thesis (DTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2016.
The water desalination process needs large quantities of energy, either directly from fossil fuel or electricity from the national grid. However, these sources of energy significantly contribute to problems such as global warming in addition to creating a drain on the economy, due to their high cost. This dissertation is a description of the research undertaken with the aim of producing a water desalination prototype; a novel approach that was designed using state-of-the-art solar water heating equipment, incorporating the technologies of evacuated tubes and heat pipes. During the execution of the project, various modifications to the original commercially-available solar water heating system were attempted, each aimed at increasing the production of pure water. Finally, the system proved capable of producing a reasonable amount of pure water after twelve lengthy indoor experiments conducted in a laboratory in the department of Mechanical Engineering at the Cape Peninsula University of Technology, Bellville Campus, Cape Town, South Africa. Each experiment lasted five days on the basis of seven hours of exposure to an average amount of simulated solar radiation, followed by seventeen hours daily of inactivity and partial cooling down of the system.

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Asim, Muhammad. "Experimental Analysis of Integrated System of Membrane Distillation for pure water with solar domestic hot water". Thesis, KTH, Energiteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-141141.

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In GCC countries, especially in UAE desalination of sea water is considered to be one of the most effective and strategic alternative for satisfying the current and future demand of water for domestic purposes. The depletion of ground water aquifers, rapid industrial development and increase of urban population in UAE lead to tremendous increase in fresh water demand during past decade. Although, desalinated fresh water is supplied to the consumers by local municipalities, people in the region rely mostly on bottled water for drinking purpose obtained through post desalination re-processing. Thousands of suppliers in UAE deliver bottled water to homes or offices thus leading to environmental unsustainability in the whole conversion chain from desalinated water to bottling, packaging and delivery. In fact, UAE is one of the leading countries in per capita bottle water consumption. Therefore, a need has been observed to provide safe drinking water for households in a sustainable way.In order to produce drinking water at homes, a concept of integrating Membrane Distillation (MD) based water purification with Solar Domestic Hot Water (SDHW) systems has been proposed and its feasibility has been evaluated in this research study. Present application is for a single family house/villa in UAE region that requires 20 l/day of drinkable water and 250 l/day of hot water for domestic purpose. An experimental pilot system has been installed at CSEM-uae for evaluating different operational parameters of such integrated system and also to determine overall thermal performance of the system. The study provides detailed design of experimental unit, procurement, installation and commissioning of the SDHW-MD integrated system along with estimated annual profiles of pure water and overall energy consumption.Experiments performed for one month during summer and distillate fluxes of around 4.5 – 12 l/m2/hour has been obtained with optimum MD hot and cold side flow rates of 6 and 3 l/min respectively and at hot side temperatures ranging from 50 - 70oC with cold side average temperature of 35oC. With recovery of cold side heat of MD unit, 25% of daily demand of DHW could be reduced and hence the estimated annual combined energy demand of 8220 kWh could be sufficiently fulfilled with either 8.5 m2 aperture area of Flat plate solar thermal collectors or with 7.5 m2 of Evacuated tubular collectors.

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Zhou, Zexing. "Engineering design of thermochemical energy storage system to provide hot water suitable for membrane distillation operation". Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/208079/1/Zexing_Zhou_Thesis.pdf.

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This thesis used Computational Fluid Dynamic Software Ansys Fluent to evaluate the design of a Zeolite 13X based Thermochemical Energy Storage System. The system is designed to provide constant hot water supply during night-time for a solar Membrane Distillation (MD) system. It overcomes the intermittent nature of solar energy to provide a sustainable energy solution for mining water treatment in Australia. The utilization of CFD also proposed a method to predict the performance of a designed TES which estimated the critical configurations such as optimal charging/discharging flow rate, temperature, relative humidity, and pipe arrangement configuration, etc.

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Munir, Anjum [Verfasser]. "Design, development and modeling of a solar distillation system for the processing of medicinal and aromatic plants / Anjum Munir". Kassel : Universitätsbibliothek Kassel, 2010. http://d-nb.info/1007323116/34.

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Ramos, Rafael Eug?nio Moura. "Estudo de um sistema h?brido de destila??o solar para polimento de ?guas produzidas". Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15830.

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Made available in DSpace on 2014-12-17T15:01:29Z (GMT). No. of bitstreams: 1 RafaelEMR_DISSERT.pdf: 3658891 bytes, checksum: 915aceff21c337d579cbf07b03a0e86a (MD5) Previous issue date: 2012-05-28
The oil industry, experiencing a great economic and environmental impact, has increasingly invested in researches aiming a more satisfactory treatment of its largest effluent, i.e., produced water. These are mostly discarded at sea, without reuse and after a basic treatment. Such effluent contains a range of organic compounds with high toxicity and are difficult to remove, such as polycyclic aromatic hydrocarbons, salts, heavy metals, etc.. The main objective of this work was to study the solar distillation of produced water pre-treated to remove salts and other contaminants trough of a hybrid system with a pre-heater. This developed apparatus was called solar system, which consists of a solar heater and a conventional distillation solar still. The first device consisted of a water tank, a solar flat plate collector and a thermal reservoir. The solar distillator is of simple effect, with 1m2 of flat area and 20? of inclination. This dissertation was divided in five steps: measurements in the solar system, i.e. temperatures and distillate flow rate and weather data; modeling and simulation of the system; study of vapor-liquid equilibrium of the synthetic wastewater by the aqueous solution of p-xylene; physical and chemical analyses of samples of the feed, distillate and residue, as well as climatology pertinent variables of Natal-RN. The solar system was tested separately, with the supply water, aqueous NaCl and synthetic oil produced water. Temperature measurements were taken every minute of the thermal reservoir, water tank and distillator (liquid and vapor phases). Data of solar radiation and rainfall were obtained from INPE (National Institute for Space Research). The solar pre-heater demonstrated to be effective for the liquid systems tested. The reservoir fluid had an average temperature of 58?C, which enabled the feed to be pre-heated in the distillator. The temperature profile in the solar distillator showed a similar behavior to daily solar radiation, with temperatures near 70?C. The distillation had an average yield of 2.4 L /day, i.e., an efficiency of 27.2%. Mathematical modeling aided the identification of the most important variables and parameters in the solar system. The study of the vapor-liquid equilibrium from Total Organic Carbon (TOC) analysis indicated heteroazeotropia and the vapor phase resulted more concentrated in p-xylene. The physical-chemical analysis of pH, conductivity, Total Dissolved Solids (TDS), chlorides, cations (including heavy metals) and anions, the effluent distillate showed satisfactory results, which presents a potential for reuse. The climatological study indicates the region of Natal-RN as favorable to the operation of solar systems, but the use of auxiliary heating during periods of higher rainfall and cloud cover is also recommended
A ind?stria do petr?leo, sentindo um grande impacto econ?mico e ambiental, tem investido crescentemente em pesquisas visando a um tratamento mais satisfat?rio de seu maior efluente: as ?guas produzidas em campos de produ??o. Estas s?o, em sua maioria, descartadas no mar, sem aproveitamento, ap?s serem tratadas. Esse tipo de efluente cont?m uma gama de compostos org?nicos de alta toxicidade e dif?cil remo??o, como hidrocarbonetos polic?clicos arom?ticos, al?m de sais, metais pesados etc. O objetivo principal desse trabalho foi estudar a destila??o solar da ?gua de produ??o pr?-tratada para remo??o de sais e contaminantes da mesma a partir do uso de um sistema h?brido com pr?-aquecimento. Este aparato desenvolvido foi denominado de sistema solar, que ? composto por um aquecedor solar convencional e um destilador solar; o primeiro constitui-se de uma caixa d'?gua, uma placa coletora solar plana e um reservat?rio t?rmico; o destilador solar ? de simples efeito, com 1m2 de ?rea ?til e 20? de inclina??o na cobertura. A metodologia consistiu em cinco etapas: experimentos no sistema solar, com medi??o de temperaturas e de destilado obtido e obten??o de dados climatol?gicos; modelagem e simula??o do sistema; estudo de equil?brio l?quido-vapor de um efluente modelo de solu??o aquosa de p-xileno; realiza??o de an?lises f?sico-qu?micas de amostras de alimenta??o, destilado e res?duo; e um estudo climatol?gico da cidade de Natal-RN. O sistema solar foi testado, separadamente, com ?gua de abastecimento, solu??o aquosa sint?tica de NaCl e ?gua produzida de petr?leo. Foram realizadas medi??es de temperatura, a cada minuto, no reservat?rio t?rmico, na caixa d??gua e no destilador (fases l?quida e vapor). Dados de radia??o solar e precipita??o pluviom?trica foram obtidos do INPE (Instituto Nacional de Pesquisas Espaciais). O pr?-aquecimento solar mostrou-se eficiente para os l?quidos testados e o fluido no reservat?rio t?rmico apresentou uma temperatura m?dia de 58 ?C, o que viabilizou a alimenta??o aquecida no destilador. O perfil de temperaturas no destilador solar apresentou comportamento similar ? radia??o solar di?ria, com temperaturas m?ximas pr?ximas a 70 ?C. Esse equipamento teve rendimento m?dio de 2,52 L/d e efici?ncia m?dia de 27,2%. A modelagem matem?tica permitiu identificar as vari?veis e par?metros mais influentes no sistema solar. O estudo do equil?brio l?quido-vapor, a partir de an?lise de TOC, indicou condi??o de heteroazeotropia, com o p-xileno se concentrando na fase vapor. As an?lises f?sico-qu?micas de pH, condutividade, STD, cloretos, c?tions (incluindo metais pesados) e ?nions, do efluente destilado apresentaram resultados satisfat?rios, o que evidencia um potencial de reuso. O estudo climatol?gico indica a cidade ou a regi?o de Natal-RN como favor?vel ? opera??o de sistemas solares, mas o uso de aquecimento auxiliar nos per?odos de maior pluviosidade e nebulosidade ? recomendado

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Nguyen, Bao The. "Feasibility of solar hot water and distillation systems in Vietnam". Thesis, Nguyen, Bao The (1998) Feasibility of solar hot water and distillation systems in Vietnam. PhD thesis, Murdoch University, 1998. https://researchrepository.murdoch.edu.au/id/eprint/52389/.

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This thesis studies the feasibility of solar hot water and distillation systems in Vietnam. The first part of the work involved investigating the available solar radiation data for Vietnam and developing procedures for producing hourly solar radiation and ambient temperature sequences for use in simulation studies. Two versions of the modified Angstrom formula were developed from long term records of measured monthly mean daily global solar radiation and sunshine hour values obtained from twelve meteorological stations across Vietnam. These formulae were then used to estimate solar radiation for additional stations where only sunshine records were available. The results from these two formulae were compared with those from eight other commonly used correlations between solar irradiation and sunshine duration. The distribution of the solar radiation throughout the country was then summarised in the form of monthly solar radiation maps, a useful approach for those interested in assessing the potential for the application of solar energy in Vietnam. A computer model to generate hourly solar radiation and ambient temperature sequences from monthly average daily radiation values, or monthly average daily sunshine hour data, and monthly average daily temperature values, was developed. This model can be used for a tropical country like Vietnam to overcome the difficulty of the scarcity of hourly solar radiation data for use in simulation packages. The resulting model was tested in a number of ways. A single purpose, user-friendly simulation program for solar hot water systems (SHWS) in Vietnam, called VIETSIM, was developed. This program has been validated by comparing the results of this program with those from the well-known TRNSYS program and is shown to be highly reliable. The feasibility of SHWS in Vietnam is studied for both the domestic and commercial sectors. For the domestic sector, the analysis focuses on medium size families in three locations, representing the main climatic types in this country. For the commercial sector, a case study of a hotel - office building is used as an indicator of the feasibility in this sector. The development of SOLSTILL, a simulation program for estimating the performance of basin type solar stills is described. Models for both the standard free convection solar still and a forced convection solar still with enhanced heat recovery were included in the program. The design, fabrication and testing of an experimental system set up at Murdoch University Energy Research Institute to validate SOLSTILL is detailed. The comparison of experimental and simulation results indicates that the program can predict distillate production at an acceptable level of accuracy. The results from a sensitivity analysis of SOLSTILL involving varying weather, design and operational parameters are also presented. The feasibility of such solar distillation applications in Vietnam is investigated through the use of the SOLSTILL program in a case study.

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Ma, Qiuming. "Etude de faisabilité d'un module plan intégrant distillation membranaire et collecteur solaire pour le dessalement autonome et décentralisé d'eau de mer : conception, modélisation et optimisation pour une application aux petites communautés isolées". Thesis, Toulouse, INSA, 2019. http://www.theses.fr/2019ISAT0006.

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Les petites unités de dessalement au point d’usage sont une alternative pour l’accès à l'eau potable des communautés isolées de zones côtières ou insulaires. Dans cette thèse, la distillation membranaire (MD) est le procédé de choix pour l’application visée. De plus, les lieux d’implantation ciblés souffrent souvent d’un manque d’accès à l’énergie, mais la plupart d’entre eux sont exposés à des niveaux élevés de radiation solaire. Afin de réduire les pertes de chaleur du système et d'intensifier le procédé, un module intégrant des membranes planes de MD sous vide (VMD) et un collecteur solaire à plaque plane (FPC) apparaît comme une technologie possible. Cette étude a pour objectifs d’étudier la faisabilité de ce concept et de déterminer les paramètres de l’équipement et les conditions opératoires les plus favorables pour l’application visée en cherchant à réduire la consommation d’électricité (par des panneaux photovoltaïques PV) et améliorer simultanément l’efficacité énergétique et la production d’eau dans l’ensemble du module VMD-FPC. Les analyses de sensibilité et les optimisations multi-objectifs sont effectuées à partir de séries de simulations. La productivité quotidienne peut atteindre 96 L pour une surface de module de 3 m2. Un coût énergétique quasi-constant d’une puissance PV de 4,2 à 5,0 W L-1 est observé, permettant d’ajuster la capacité du système. Pour une puissance PV limitée à 130 W (installation mobile), plus de 30 L de distillat peuvent être obtenus avec une surface de 0,83 m2 par une belle journée d'été à Toulouse, en tenant compte des paramètres de fonctionnement optimisés et des matériaux réels
Small-scale desalination at the point of use offers a potential access to drinking water to communities living in remote coastal areas or isolated islands. In this dissertation, Membrane Distillation (MD) is the applied technology for the aforementioned application scenario. Moreover, the target places are also often in the lack of stable and centralized heat and power supply, while most of them benefit from high solar radiations. In order to further reduce the system heat loss and to intensify the process, the integration in the same module of flat-sheet distillation membranes for Vacuum MD (VMD) and direct solar heating by flat-plate collector (FPC) appears as a possible option. This study aims to explore the feasibility of this concept and to determine the more favorable design and operating conditions for the target application. The main task in this regard is to reduce electricity consumption (provided by photovoltaic PV panels) and simultaneously improve the energy efficiency and water production throughout the VMD-FPC module. The sensitivity analyses and multi-objective optimizations are conducted based on series of simulations. Results show that the potential daily productivity of the system can reach up to 96 L for a module surface area of 3 m2. A quasi-constant power cost of PV of 4.2 - 5.0 W L-1 is observed, permitting a flexible adjustment of the system capacity. Under a limitation of an average PV power of 130 W, more than 30 L of distillate can be obtained with a surface area of 0.83 m2 on a sunny summer-day in Toulouse, taking the optimized operating parameters and real-world material properties into account

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Yadav, Jeetendra Kumar. "Energy and exergy analysis of active photovoltaic thermal solar distillation system". Thesis, 2017. http://localhost:8080/xmlui/handle/12345678/7310.

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Libri sul tema "SOLAR DISTILLATION SYSTEM"

Tiwari, G. N., e Lovedeep Sahota. Advanced Solar-Distillation Systems. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4672-8.

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Narayanan, Lakshmi. Design and Fabrication of Solar Water Distillation System. Independently Published, 2018.

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Tiwari, A. K., e G. N. Tiwari. Solar Distillation Practice For Water Desalination Systems. Anshan Publishers, 2008.

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N, Tiwari G., e Lovedeep Sahota. Advanced Solar Distillation Systems: Basic Principles, Thermal Modeling and Applications. Springer, 2017.

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Gaur, Manoj Kumar, Brian Norton e Gopal Tiwari, a cura di. Solar Thermal Systems: Thermal Analysis and its Application. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/97898150509501220101.

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This book encapsulates current information about the science behind solar energy and the solar thermal systems available to meet domestic needs. Several scholars have contributed to the chapters in the text in an effort to distill research-oriented topics for learners. The book starts with an explainer on the fundamentals of thermodynamics, heat transfer and solar energy in the first 2 chapters. The basics of some solar thermal devices along with their thermal modeling are covered in the next few chapters, along with solar distillation systems. This is followed by information about the design, development and applications of solar cookers along with their thermal modeling. Thermal modeling of semi-transparent PVT systems and their applications are discussed in Chapter 9. Chapter 10 covers the development in solar photovoltaic technology. Chapter 11 and Chapter 12 discusses thermal modeling of greenhouse solar dryers and presents a case study on a hybrid active greenhouse solar dryer. Chapter 13 covers the thermal analysis of photovoltaic thermal (PVT) air heaters employing thermoelectric modules (TEM). The applications of various solar systems in building sectors and the development in this field are covered in Chapter 14. Chapter 15 deals with energy and environ- economics analysis of bio-gas integrated semi-transparent photo-voltaic thermal (Bi-iSPVT) systems for Indian climates. The book has a broad scope and is intended as a resource for students, researchers and teachers in universities, industries, and national and commercial laboratories to help learn the fundamentals and in-depth knowledge of thermal modeling and recent developments in solar heating systems.

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N, Tiwari G., e Lovedeep Sahota. Advanced Solar-Distillation Systems: Basic Principles, Thermal Modeling, and Its Application. Springer, 2017.

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N, Tiwari G., e Lovedeep Sahota. Advanced Solar-Distillation Systems: Basic Principles, Thermal Modeling, and Its Application. Springer, 2018.

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Capitoli di libri sul tema "SOLAR DISTILLATION SYSTEM"

Zheng Li, Jeremy. "Solar Energy System for Water Distillation". In CAD, 3D Modeling, Engineering Analysis, and Prototype Experimentation, 17–25. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05921-1_2.

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Khandelwal, Neelam, Jatin Singh, Ishita Singh, Manikant Singh e Raj Kumar Kesharwani. "Design Analysis of Solar Water Distillation System by Using Flat Plate Collector". In Lecture Notes in Mechanical Engineering, 169–78. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3498-8_15.

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Ahmad, Nordila, Norhasirah Mohd Isa, Zuliziana Suif, Maidana Othman, Jestin Jelani e Jaafar Adnan. "Productivity Enhancement of Solar Still Distillation System Using Immersion-Type Water Heater". In Sustainable Development of Water and Environment, 27–37. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75278-1_3.

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Joshi, Sandeep, Shubham Tagde, Aboli Pingle, Nikhil Bhave e Tushar Sathe. "Performance Analysis of Corrugated Inclined Basin Solar Distillation System Coupled with Parabolic Trough Collector". In Advances in Mechanical Engineering, 9–15. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3639-7_2.

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Meena, Pankaj Kumar, Shivanshu Sharma e Namrata Sengar. "Development of Pyramid-Shaped Solar Distillation System and Experiments with Different Absorber Coating Materials". In Lecture Notes in Electrical Engineering, 285–94. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1186-5_24.

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Hanoin, M. A. H. M., N. M. Mokhtar, N. S. Abu, F. N. Zainuddin, L. K. Yi e M. S. Hadi. "Integration of Parabolic Solar Thermal Collector with Direct Contact Membrane Distillation System for Seawater Desalination". In Lecture Notes in Mechanical Engineering, 267–77. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9505-9_26.

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Tiwari, G. N., Arvind Tiwari e Shyam. "Solar Distillation". In Energy Systems in Electrical Engineering, 519–53. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0807-8_13.

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Tiwari, G. N., e Lovedeep Sahota. "Solar Collectors". In Advanced Solar-Distillation Systems, 157–210. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4672-8_4.

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Tiwari, G. N., e Lovedeep Sahota. "Economic Analysis of Solar-Distillation Systems". In Advanced Solar-Distillation Systems, 361–401. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4672-8_10.

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Tiwari, G. N., e Lovedeep Sahota. "History of Passive Solar-Distillation Systems". In Advanced Solar-Distillation Systems, 121–55. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4672-8_3.

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Atti di convegni sul tema "SOLAR DISTILLATION SYSTEM"

Beitelmal, Abdlmonem, Drazen Fabris e Reece Kiriu. "Solar-Powered Water Distillation System". In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63786.

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Future water demand is predicted to increase while current resources are continuously depleted. In this paper, a standalone off-the-grid water purification system is designed to provide an economically sustainable model for delivering clean drinking water is presented. This system utilizes concentrated heat generated by solar parabolic troughs to boil brackish water for the distillation process. The water vapor is then condensed into clean drinkable water in a water collection tank. The process of designing and optimizing the solar-powered distillation system (Heat exchanger, boiler, parabolic troughs, tracking and control system, photovoltaic panels and vapor and the heat transfer fluid pumps) and specifically the process of fabricating the parabolic trough is presented and discussed in details. Two troughs were designed and fabricated each with an area of 1.5 m2 (16 ft2). Each trough provides approximately 125 watts/ft. Duratherm 450, a non-toxic, non-hazardous heat transfer fluid (HTF) is selected for the solar trough hot loop. Additional system performance analysis was conducted through experimental testing and through a virtual system model utilizing the Engineering Equation Solver (EES). EES is used to model the heat transfer process of the overall distillation system and a range of optimum HTF flow rates were determined. The experimental results show an increase in water temperature within the boiler for the new range of HTF flow rates. In addition, the results show that the solar troughs are more robust, less expensive to manufacture, operate at a higher temperature and provide a higher performance when compared to a system that utilizes thermal panels. The overall system manufacturing cost is approximately $6000, which includes tracking, a control system and other required distillation components. This system is designed to fit into a standard 20-foot shipping container for ease of transportation worldwide.

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Badran, Omar O., Ismail M. A. Arafat e Salah A. Abdallah. "Parabolic Sun Tracking Solar Distillation System". In ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/es2009-90222.

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The main aim of the present study is to draw attention to the possibilities and to the measures of appropriate utilization of renewable energy to achieve what is called “water self-sufficient” for arid regions in Jordan. Also to put efforts of increasing the use of renewable energy sources to lower cost of potable water pumping and gives more economical benefits. Another aim of the current research is to utilize the new control algorithm and the developed computer capabilities in the field of sun tracking in order to improve the efficiency of solar distillers. The new tracking method is utilized for water distillation taking advantage of high possible concentration of parabolic trough collector to reach high levels of daily yield per square meter. The present research utilizes the techniques of image processing to catch the core of the sun as the target, also used artificial intelligence techniques to predict the sun position in abnormal conditions (i.e. cloudy, dusty, rainy). The results of sun tracking using image processing found to be accurate and reliable according to the self monitoring of the focus point validated by the solar radiation results. Water distillation yield shows high percentage output of distillate of about 65% of water supplied to distiller. Mechanical design was tested for high ability to withstand the extra loading. It was found that the output yield reached to noticeable levels, because of the use of the parabolic collector that promoted the solar still efficiency.

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Sleiti, Ahmad K., Wahib A. Al-Ammari e Mohammed Al-Khawaja. "Novel Solar driven Cooling System Integrated with Solar Still System". In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0055.

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Novel integrated solar cooling and solar distillation system is introduced to meet the high cooling and fresh water demands in hot and arid regions such as Qatar. The system is composed of a solardriven ejector cooling system coupled with a single-slope solar still. The introduced novel system is the first study that integrates two solar systems for cooling and water production with outputs significantly higher than any existing system. The results show that the productivity of the solar still is improved by enhancing the evaporation rate (using heating coil) and by increasing the condensation rate (using cooling coil). Simultaneously, this improved the COP of the ejector system by increasing its entrainment ratio with a slight increase in the required solar collector area. The performance of four different scenarios of integration between the proposed cooling and distillation systems is investigated. The results showed that the productivity of the still is five times higher than that of the conventional solar still. The annual produced water considering the hourly variation of the radiant flux was 5067 kg/year, which is 5.7 times more than the conventional systems. The estimated cost of one-liter distilled water per 1 m2 area of the present solar still is $0.04, which is only 18% of the water cost of other still technologies.

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Juárez-Trujillo, Armando, Ignacio Martin-Dominguez e Maria Teresa Alarcón-Herrera. "Using TRNSYS Simulation to Optimize the Design of a Solar Water Distillation System". In ISES Solar World Congress 2011. Freiburg, Germany: International Solar Energy Society, 2011. http://dx.doi.org/10.18086/swc.2011.05.04.

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Yang, S. Y., H. Mohamed e Z. F. Mohamad Rafaai. "Design and development of passive solar water distillation system". In ADVANCES IN MATERIAL SCIENCE AND MANUFACTURING ENGINEERING. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0119885.

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Bamasag, Ahmad, Talal Alqahtani, Shahnawaz Sinha e Patrick Phelan. "Experimental Investigation of a Membrane Distillation System Using Solar Evacuated Tubes". In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11486.

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Abstract Membrane distillation (MD) has been studied as a promising solution in the desalination industry but it has not been widely accepted or commercialized due to energy and cost concerns. MD is considered as a hybrid method that involves phase-change thermal processes and the use of membrane separation. Unlike conventional pressure-driven membrane methods such as reverse osmosis (RO), MD does not require intensive pre-treatment and can operate at lower pressure with higher salinities; but more importantly, it can utilize low-grade heat sources such as solar energy or waste heat for its operation. In this paper, an innovative MD module to directly employ solar thermal energy to assist in desalination is studied. MD systems that use solar energy as an external heater is investigated experimentally and theoretically. The proposed system, however, integrates hollow-fiber distillation membranes inside evacuated tubes solar collectors. As a result, the temperature is more uniformly distributed, minimizing the effect of temperature polarization, one of the key challenges of MD operation, thus can enhance the MD performance. The technical performance of the system is measured experimentally. The results of the proposed system are compared with a conventional MD process to investigate improvements in water production.

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Gonza´lez, R., P. Pieretti e H. Diaz. "Design Algorithm of a Multi-Effect Humidification–Dehumidification Solar Distillation System". In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-13051.

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Water is an abundant resource; however, there is an upcoming water shortage. In order to face this situation, conventional desalination plants have been built; nevertheless, these plants contribute to the emission of greenhouse gases. A way to stop this trend is to use renewable sources, especially in coastal areas where solar irradiation is abundant. Due to the large coastal line of Venezuela, and the particular troubles with water distribution in these areas, the Energy Institute of the Simon Bolivar University proposed to develop and test a solar humidification–dehumidification (MEH) distillation pilot unit to provide small communities of the isolated or insular regions of Venezuela with 25 liters of drinking water per day. This project initiates a research branch that aims to produce a commercial size solar humidification desalination plant for these areas. Considering the lack of a known design procedure for solar desalination systems, and in view to optimize future developments in the field, a design algorithm was proposed for single stage MEH units which, by setting some of the design temperatures, gives the entire flux diagram of the unit, providing the designer the possibility to start the sizing process with a strong empirical basis.

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Prasanna, Y. S., e Sandip S. Deshmukh. "Solar Distillation Systems Enriched With Machine Learning Techniques: A Review". In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-71174.

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Abstract Solar stills have the advantage of using solar radiation as they are the simple thermal energy source for saline water and industrial water desalination. This paper focuses on a detailed review of how a solar distillation system performance evaluation can be made with ongoing higher-end Machine learning techniques explicitly helpful in optimising and evaluating the still performance. Complete research on the implementation of ML models is made in this study to draw the feasibility of implementing the appropriate supervised or unsupervised machine learning methods. A comparison of the two of deep learning models applied in the advancement of the solar distillation process is explained in this study. The need for performance assessment of solar distillation system with Machine Learning Techniques is analyzed, and further significant features and components of ML and DL Methods are clearly explained. Keeping the importance of the study in front, a comparative analysis is made from the observations found in the literature review. We conclude that the Classification ML Techniques with ANN are the most appropriate models to predict the solar distillate while the ANN-MLP, ANN-FF models are more accurate than the other models. Instead of a traditional statistical approach, a DNN Hybrid model with more hidden layers can be used in optimising the water depth.

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Shabgard, Hamidreza, Ben Xu e Ramkumar Parthasarathy. "Solar Thermal-Driven Multiple-Effect Thermosyphon Distillation System for Waste Water Treatment". In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72492.

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A solar thermal-driven multiple-effect thermosyphon distillation (METD) system is proposed for waste-water treatment. The METD system consists of a series of cascaded thermosyphons that are connected by embedding the condenser section of each thermosyphon in the evaporator section of the following device. The input thermal energy is supplied by a solar collector integrated with a latent heat thermal energy storage unit. A thermal network model is developed to predict the heat transfer rates through the METD system and distilled water production rates. METD systems with various number of effects and hot end temperatures are investigated. It is found that the ratio of distilled water production to the input thermal energy increases by increasing the number of effects with no dependence on the hot end temperature. Quantitatively, a METD system with 5 effects can produce 11 kg of fresh water per hour with an input heat of 1.4 kW.

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Garmoud, Eman A. "Practical Investigation of Some Characteristics of the Solar Distillation System for Solar Water Desalination". In 2021 IEEE 1st International Maghreb Meeting of the Conference on Sciences and Techniques of Automatic Control and Computer Engineering MI-STA. IEEE, 2021. http://dx.doi.org/10.1109/mi-sta52233.2021.9464380.

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Rapporti di organizzazioni sul tema "SOLAR DISTILLATION SYSTEM"

Nenoff, Tina M., Sarah E. Moore, Sera Mirchandani, Vasiliki Karanikola, Robert G. Arnold e Eduardo Saez. Multi-objective Optimization of Solar-driven Hollow-fiber Membrane Distillation Systems. Office of Scientific and Technical Information (OSTI), settembre 2017. http://dx.doi.org/10.2172/1395756.

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