Research Papers

Design and Fabrication of a Multistage Solar Still With Three Focal Concentric Collectors

[+] Author and Article Information
Fayadh M. Abed

College of Engineering,
Tikrit University,
Al-Qadysia 34001, Iraq
e-mail: Fayadh_mohamed@tu.edu.iq

1Corresponding author.

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received November 3, 2017; final manuscript received February 4, 2018; published online March 13, 2018. Assoc. Editor: Gerardo Diaz.

J. Sol. Energy Eng 140(4), 041003 (Mar 13, 2018) (9 pages) Paper No: SOL-17-1442; doi: 10.1115/1.4039351 History: Received November 03, 2017; Revised February 04, 2018

This research is intended to design and manufacture a multilayer solar distiller at a promising cost. The solar distiller manufactured has the same design as simple water distillers, which are based on the principle of evaporation and condensation with a different energy cycle, where the processes of evaporation and condensation are completely isolated. The obtained results showed that the amount of produced water has increased by 60% compared to the traditional solar distillers, where the system is not isolated. No catalysts were used, and the areas of the evaporation and condensation have also been increased leading to the production of distilled water under natural conditions and low cost. A comparison between the theoretical and experimental results is performed. The productivity was as follows: 8.45, 11.04, 12.20, 21.44, 18.69, 16.15, and 14.49 L/day in January, February, March, September, October, November, and December, respectively.

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Fig. 1

Multistage water desalination system processing

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Fig. 2

Multistage water still thermal losses and gain process

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Fig. 3

Mean monthly variation of ambient temperature and relative humidity in Kirkuk

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Fig. 4

Tracking and collector system

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Fig. 5

Mean monthly variation of solar radiation and ambient temperature in Kirkuk

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Fig. 6

Effect of distill length on productivity

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Fig. 11

Effect of mass flow rate on the distillate production

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Fig. 10

Effect of temperature difference between the evaporator and condenser surfaces on the hourly distillate for the first stage

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Fig. 9

Hourly variation of temperature in the stages

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Fig. 8

Variation of distillate productivity with time

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Fig. 7

Effect of collector's area and HTF on productivity

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Fig. 12

Comparison of hourly productivity of the system during Sept. 14, 2016

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Fig. 13

Comparison of hourly space temperature of the system at the first during Sept. 14, 2016



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