Observational study of modified solar still coupled with oil serpentine loop from cylindrical parabolic concentrator and phase changing material under basin
TL;DR: In this paper, the performance of a cylindrical parabolic concentrator with focal pipe coupled with a developed solar still with (oil heat exchanger, Phase Change Material (PCM)) have been experimentally investigated to improve the freshwater productivity.
About: This article is published in Solar Energy.The article was published on 2017-03-01. It has received 166 citations till now. The article focuses on the topics: Solar still & Photovoltaic thermal hybrid solar collector.
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TL;DR: In this paper, a state-of-the-art review on phase change materials (PCMs) and their applications for heating, cooling and electricity generation according to their working temperature ranges from (−20°C to +200°C).
381 citations
TL;DR: In this paper, an experimental study on water desalination using a solar still having phase change material (PCM) and connected to a solar collector was carried out, where the PCM is used to store solar thermal energy collected by the system at daytime as latent heat, to provide heat during night time thus continuous operation.
229 citations
TL;DR: In this paper, the thermal conductivity of graphene oxide nanoparticle in PCM acts as the key role in improving the thermal performance of a tubular solar still, as compared to that of PCM without nanoparticle.
Abstract: Storing of energy in the form of latent or sensible heat is the best method in improving the performance of any thermal application. Desalination using renewable energy is the best method in getting potable water and due to its lower performance and yield it is not commercially available. The present investigation deals with improving potable water produced using nanomaterial in phase change material from a tubular solar still. Three different solar still namely TSS, TSS with PCM and TSS with NPCM were used in the present study and tested under the climatic conditions of Chennai, India. The thermal conductivity of graphene oxide nanoparticle in PCM acts as the key role in improving the thermal performance as the thermal conductivity of NPCM improved by 52% compared to that of PCM without nanoparticle. There is no significant improvement in the thermal conductivity of nano enhanced PCM with concentration beyond 0.3%. With a significant improvement in the thermal conductivity of NPCM, the water temperature increased by 7 °C and 3 °C as compared to TSS loaded with PCM and TSS without PCM respectively. The maximum enhancement in temperature of NPCM is found as 24% and the temperature is higher during off shine hours compared to that of PCM without nanoparticle. Similarly, with improved water temperature using NPCM as energy material, the evaporation rate from the absorber is improved by 41.3%, whereas, the average EHTC for TSS and TSS loaded with PCM alone is improved by 32.76 and 34.32% respectively. The total cumulative yield produced per m2 area from TSS, TSS with PCM, and TSS with NPCM is found to be 2.59, 3.35 and 5.62 kg respectively. Results also revealed that the daily efficiency of TSS with NPCM is improved to about 116.5% and comparatively higher than TSS with PCM and conventional tubular solar still.
170 citations
TL;DR: A modified pyramid solar still with both v-corrugated absorbers plate and PCM was designed, constructed and fabricated under the same ambient conditions of Tanta city, Egypt as mentioned in this paper.
152 citations
TL;DR: In this paper, a single-basin still with graphite as a sensible storage material is compared to a traditional single basin still with sand, black gravel, and glass balls.
131 citations
References
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Book•
20 Mar 2002
TL;DR: In this article, the authors present the resources and need for water desalination, and present an economic analysis of the desalinization process, including factors affecting product cost and economic calculations.
Abstract: Introduction - Resources and need for water desalination, Composition of seawater Single Effect Evaporation - Single effect evaporation, Evaporators Single Effect Evaporation - Vapor Compression, Single effect thermal vapor compression, Single effect mechanical vapor compression Multiple Effect Evaporation - Developments in multiple effect evaporation, Forward feed multiple effect evaporation Multiple Effect Evaporation - Vapor Compression, Parallel feed multiple effect evaporation, Forward feed multiple effect evaporation with thermal vapor compression Multi Stage Flash Distillation - Developments in MSF, MSF flashing stage Reverse Osmosis - Historical background, Elements of membrane separation Reverse Osmosis Feed Treatment, Biofouling, and Membrane Cleaning - Nee for pretreatment processes in RO, Testing methods Associated Processes - Venting of non-condensable gases, Steam jet ejectors Economic Analysis of Desalination Processes - Factors affecting product cost, Elements of economic calculations. Appendices: Thermodynamic Properties Thermodynamic Losses Heat Transfer Coefficients Computer Package.
790 citations
TL;DR: In this article, to augment evaporation of the still basin water, fins were integrated at the basin of the solar still to accelerate the production rate, and for further increase in exposure area sponges were used.
385 citations
TL;DR: In this article, a single slope-single basin solar still with and without phase change material (PCM) under the basin liner of the still has been investigated by computer simulation.
341 citations
Book•
01 Jan 1967
TL;DR: This book is designed as a laboratory workbook, introducing simple ideas within the reader's experience and building upon them in order to enable students to present results in a clear and accurate manner, before mastering the underlying theory.
Abstract: Undergraduate students of physics and engineering need to develop an understanding of the nature of random experimental errors and of how to present experimental results, taking proper account of these errors. This book is designed as a laboratory workbook, introducing simple ideas within the reader's experience and building upon them in order to enable students to present results in a clear and accurate manner, before mastering the underlying theory. Confidence in using statistical methods in practical situations is established by this 'common sense' approach, encouraging the student to progress to more complex theoretical concepts. All the mathematical techniques required are developed in the book so reference to other texts is not necessary. Problems and examples are provided at the ends of sections, in order not to disturb the flow of the narrative, and a summary of the main results needed for practical purposes is given at the end of the book.
262 citations
TL;DR: In this paper, the authors presented an analytical study as well as thermal and economic comparisons between two solar still configurations: the pyramid and the single slope, and the main performance parameters such as still productivity and efficiency are presented for the whole year.
260 citations