0
Research Papers

Productivity Enhancement of Solar Still Using Water Heater and Cooling Fan

[+] Author and Article Information
Ahmed Z. Al-Garni1

 Professor and ChairmanAerospace Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabiaalgarni@kfupm.edu.sa

1

Corresponding author.

J. Sol. Energy Eng 134(3), 031006 (Apr 04, 2012) (8 pages) doi:10.1115/1.4005760 History: Received November 15, 2011; Revised November 16, 2011; Published April 03, 2012; Online April 04, 2012

In the present work, an attempt is made to enhance the productivity of a double slope solar still by using an immersion type water heater. The effect of using an external fan to cool the glass surface is also examined. Experiments were carried out for winter season in Saudi Arabian climatic conditions at latitude 26 deg N. A solar still with 35 deg glass slope angle is chosen in our study. Since the yield of a solar still is more for low water depths, the water level in the base tank was maintained at 1 cm. The experimental results showed that the productivity increased by a significant 370% when two water heaters each having 500 W capacities was used. When external cooling fan was used the productivity was found to decrease by 4% and 8% for wind speeds of 7 m/s and 9 m/s, respectively. Thermal modeling was also done using the heat and mass transfer relations, and then, numerical simulations were carried out to validate with the experimental results. A good agreement between experimental and numerical results was found. The present study is partial implementation of two patents submitted in this field.

Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Schematic diagram of solar still with immersed water heater and external fan

Grahic Jump Location
Figure 2

Solar still with 35 deg glass slope angle

Grahic Jump Location
Figure 3

Solar still with immersed water heater in the base tank

Grahic Jump Location
Figure 4

Solar still with external cooling fan

Grahic Jump Location
Figure 5

Temperature profiles for solar still with and without water heater

Grahic Jump Location
Figure 6

Productivity of solar still with and without water heater

Grahic Jump Location
Figure 7

Glass temperatures of solar still for different fan speeds

Grahic Jump Location
Figure 8

Water temperatures of solar still for different fan speeds

Grahic Jump Location
Figure 9

Productivity of solar still for different fan speeds

Grahic Jump Location
Figure 10

Comparison of experimental and numerical temperature profiles for solar still with immersed water heater

Grahic Jump Location
Figure 11

Comparison of experimental and numerical productivities for solar still with immersed water heater

Grahic Jump Location
Figure 12

Comparison of experimental and numerical temperature profiles for solar still with external cooling fan (7 m/s)

Grahic Jump Location
Figure 13

Comparison of experimental and numerical daily productivities for solar still with external cooling fan (7 m/s)

Grahic Jump Location
Figure 14

Comparison of experimental and numerical temperature profiles for solar still with external cooling fan (9 m/s)

Grahic Jump Location
Figure 15

Comparison of experimental and numerical daily productivities for solar still with external cooling fan (9 m/s)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In