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Journal Article•DOI•

Mass and heat transfer model of Tubular Solar Still

Amimul Ahsan1, Teruyuki Fukuhara2•
Universiti Putra Malaysia1, University of Fukui2
01 Jul 2010-Solar Energy (Elsevier)-Vol. 84, Iss: 7, pp 1147-1156
About: This article is published in Solar Energy.The article was published on 2010-07-01 and is currently open access. It has received 111 citations till now. The article focuses on the topics: Water vapor & Humidity.

Summary (1 min read)

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Summary

  • A new mass and heat transfer model of a Tubular Solar Still (TSS) was proposed incorporating various mass and heat transfer coefficients taking account of the humid air properties inside the still.
  • The heat balance of the humid air and the mass balance of the water vapor in the humid air were formulized for the first time.
  • As a result, the proposed model enabled to calculate the diurnal variations of the temperature, water vapor density and relative humidity of the humid air, and to predict the hourly condensation flux besides the temperatures of the water, cover and trough, and the hourly evaporation flux.
  • The validity of the proposed model was verified using the field experimental results carried out in Fukui, Japan and Muscat, Oman in 2008.
  • The diurnal variations of the calculated temperatures and water vapor densities had a good agreement with the observed ones.
  • Furthermore, the proposed model can predict the daily and hourly production flux precisely.
  • Mass heat transfer model; Humid air; Tubular Solar Still (TSS).

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Citations
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Journal Article•DOI•
Solar stills: A comprehensive review of designs, performance and material advances

[...]

D. Dsilva Winfred Rufuss1, S. Iniyan1, L. Suganthi1, Philip A. Davies2•
Anna University1, Aston University2
01 Sep 2016-Renewable & Sustainable Energy Reviews
TL;DR: In this paper, a detailed review about various types of solar stills, covering passive and active designs, single and multi-effect types, and various modifications for improved productivity including reflectors, heat storage, fins, collectors, condensers, and mechanisms for enhancing heat and mass transfer.
Abstract: The demand for fresh water production is growing day by day with the increase in world population and with industrial growth. Use of desalination technology is increasing to meet this demand. Among desalination technologies, solar stills require low maintenance and are readily affordable; however their productivity is limited. This paper aims to give a detailed review about the various types of solar stills, covering passive and active designs, single- and multi-effect types, and the various modifications for improved productivity including reflectors, heat storage, fins, collectors, condensers, and mechanisms for enhancing heat and mass transfer. Photovoltaic-thermal and greenhouse type solar stills are also covered. Material advances in the area of phase change materials and nanocomposites are very promising to enhance further performance; future research should be carried out in these and other areas for the greater uptake of solar still technology.

170 citations

Cites background from "Mass and heat transfer model of Tub..."

  • ...However, a number of other shapes have been reported for use in passive solar stills as discussed below [69-94]....

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Journal Article•DOI•
Parameters affecting the performance of a low cost solar still

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Amimul Ahsan1, Monzur Alam Imteaz2, Ukwuani A Thomas1, M Azmi1, Ataur Rahman3, Nik Norsyahariati Nik Daud1 •
Universiti Putra Malaysia1, Swinburne University of Technology2, University of Western Sydney3
01 Feb 2014-Applied Energy
TL;DR: A triangular solar still (TrSS) was designed and developed with cheap, lightweight, local and available materials, and field experiments were carried out to evaluate the effects of solar radiation intensity, ambient air temperature and the initial water depth on the daily water production of the TrSS as discussed by the authors.

162 citations

Cites background from "Mass and heat transfer model of Tub..."

  • ...In addition, a water pipe line distribution system is not available in these regions, and the road network and transportation system are insufficient to carry a large amount of potable water regularly from desalination plant area to the consumers [1]....

    [...]

Journal Article•DOI•
Productivity enhancements of compound parabolic concentrator tubular solar stills

[...]

Thirugnanasambantham Arunkumar1, Ramalingam Velraj1, David Denkenberger2, Ravishankar Sathyamurthy3, K. Vinoth Kumar, Amimul Ahsan4 •
Anna University1, Tennessee State University2, Hindustan University3, Universiti Putra Malaysia4
01 Apr 2016-Renewable Energy
TL;DR: In this article, the performance of compound parabolic concentrator assisted tubular solar still (CPC-TSS) with different augmentation systems was studied. And the results showed that, the productivity of un-augmented CPCTSS and CPC-CTSS were 3710 ml /day and 4960 ml/day, respectively.

147 citations

Journal Article•DOI•
Effect of water and air flow on concentric tubular solar water desalting system

[...]

Thirugnanasambantham Arunkumar1, R. Jayaprakash1, Amimul Ahsan2, David Denkenberger, M. S. Okundamiya3 •
Ramakrishna Mission1, Universiti Putra Malaysia2, Ambrose Alli University3
01 Mar 2013-Applied Energy
TL;DR: In this article, the authors reported an innovative design of tubular solar still with a rectangular basin for water desalination with flowing water and air over the cover, and the daily distillate output was increased by lowering the temperature of water flowing over it (top cover cooling arrangement).

146 citations

Journal Article•DOI•
Parameters influencing the productivity of solar stills – A review

[...]

P. Prakash1, V. Velmurugan2•
Anna University1, University of Cambridge2
01 Sep 2015-Renewable & Sustainable Energy Reviews
TL;DR: In this article, a review is made on the various parameters influencing the productivity of the solar stills, including area of absorption, minimum depth of water, water-glass cover temperature difference, inlet water temperature, heat storage, phase change materials, vacuum technology and other methods such as using reflectors, condensers, multi effect distillation, etc.
Abstract: In this paper, a review is made on the various parameters influencing the productivity of the solar stills. The researches on the factors improving productivity such as area of absorption, minimum depth of water, water–glass cover temperature difference, inlet water temperature, heat storage, phase change materials, vacuum technology and other methods such as using reflectors, condensers, multi effect distillation, etc. are discussed here. The review showed that the productivity increases when the area of the absorption is increased. The basin water depth is the main parameter that affects the productivity of the still. The increase of the water–glass cover temperature difference (Tw−Tg) also plays a vital role in increasing the productivity. Preheating the feed water to the still basin shows a considerable improvement in the productivity. The studies showed that solar stills with heat storage medium and phase change materials can produce distillate during off-shine hours (nocturnal distillation) and thereby, enhance the productivity. Maintaining vacuum conditions and the use of reflectors and condensers improves the performance of the solar stills. Various modifications in the solar stills such as weir type stills, multi effect distillation, thermoelectric cooling, inclined type stills, etc. enhanced the productivity of the solar stills.

137 citations

References
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Handbook of heat transfer

[...]

Warren M. Rohsenow, J. P. Hartnett, Young I. Cho
01 Jan 1997
TL;DR: In this article, the analogy between heat and mass transfer is covered and applied in the analysis of heat transfer by conduction, convection and radiation, and the analysis is performed by using the handbook of numerical heat transfer.
Abstract: Handbook of Numerical Heat Transfer Free Full Download Links from Multiple Mirrors added by DL4W on 2015-04-10 02:13:35. Handbook of heat transfer / editors, W.M. Rohsenow, J.P. Hartnett. Y.I. Cho. m 3rd ed. p. cm. Includes bibliographical references and index. ISBN 0-07053555-8. Students investigate heat transfer by conduction, convection and radiation. The analogy between heat and mass transfer is covered and applied in the analysis.

1,644 citations

Book•
Advances in Heat Transfer

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J. P. Hartnett, Thomas F. Irvine, Young I. Cho, George Alanson Greene
15 Aug 2003
TL;DR: Advances in Heat Transfer as mentioned in this paper provides in-depth review articles over a broader scope than in traditional journals or texts, which serve as a broad review for experts in the field and are also of great interest to non-specialists who need to keep up to date with the results of the latest research.
Abstract: Advances in Heat Transfer fills the information gap between regularly scheduled journals and university-level textbooks by providing in-depth review articles over a broader scope than in traditional journals or texts. The articles, which serve as a broad review for experts in the field are also of great interest to non-specialists who need to keep up-to-date with the results of the latest research. This serial is essential reading for all mechanical, chemical, and industrial engineers working in the field of heat transfer, or in graduate schools or industry. * Compiles the expert opinions of leaders in the industry* Fills the information gap between regularly scheduled journals and university-level textbooks by providing in-depth review articles over a broader scope than in traditional journals or texts* Essential reading for all mechanical, chemical, and industrial engineers working in the field of heat transfer, or in graduate schools or industry

1,591 citations

Journal Article•DOI•
Seawater desalination using renewable energy sources

[...]

Soteris A. Kalogirou1•
Higher Technical Institute of Cyprus1
01 Jan 2005-Progress in Energy and Combustion Science
TL;DR: In this article, the authors present a review of various systems that use renewable energy sources for desalination, including solar collectors, photovoltaics, solar ponds and geothermal energy.

949 citations

Journal Article•DOI•
On a derivable formula for long-wave radiation from clear skies

[...]

Wilfried Brutsaert
01 Oct 1975-Water Resources Research
TL;DR: In this article, a derivation for the effective atmospheric emissivity to predict downcoming long-wave radiation at ground level under a clear sky and for a nearly standard atmosphere is presented.
Abstract: A derivation is presented for the effective atmospheric emissivity to predict downcoming long-wave radiation at ground level under a clear sky and for a nearly standard atmosphere. The results are in good agreement with those obtainable with empirical formulae based on water vapor pressure and temperature. However, the proposed formulation has the advantage that its simple functional form is based on physical grounds without the need for empirical parameters from radiation measurements. Also, in contrast to the empirical equations, it may be adjusted in a simple way to reflect changes in climatic and atmospheric conditions.

914 citations

Book Chapter•DOI•
The Overall Convective Heat Transfer from Smooth Circular Cylinders

[...]

Vincent T. Morgan1•
Commonwealth Scientific and Industrial Research Organisation1
01 Jan 1975-Advances in heat transfer
TL;DR: In this paper, it was shown that the error due to heat conduction to the supports is particularly important with natural convection, especially where the heat loss and the temperature rise of the cylinder are calculated from the voltage drop across it.
Abstract: Publisher Summary Accurate knowledge of the overall convective heat transfer from circular cylinders is of importance in a number of fields, such as boiler design, hotwire anemometry, and the rating of electrical conductors. The wide dispersion in the published experimental data for the heat transfer from smooth circular cylinders by natural and forced convection is attributed to various factors associated with the experiments. The error due to heat conduction to the supports is particularly important with natural convection, especially where the heat loss and the temperature rise of the cylinder are calculated from the voltage drop across it. A common cause of error is the use of too small a space ratio, so that the temperature and velocity fields are distorted. To reduce this error to less than l%, the space ratio D c /D for natural convection or D T /D for forced convection should exceed 100. The error caused by blockage with wind tunnel measurements can be calculated depending on the type of tunnel. One of the greatest sources of error with forced convection is the failure to allow for the effect of stream turbulence.

761 citations

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Single basin solar still with fin for enhancing productivity

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01 Oct 2008-Energy Conversion and Management
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01 Oct 2009-Energy
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Frequently Asked Questions (1)
Q1. What are the contributions in this paper?

In this paper, a new mass and heat transfer model of a Tubular Solar Still ( TSS ) was proposed incorporating various mass and heat transfer coefficients taking account of the humid air properties inside the still. Furthermore, the proposed model can predict the daily and hourly production flux precisely.