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Exploring Fog Water Harvesting Potential and Quality in the Asir Region, Kingdom of Saudi Arabia

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Abstract

During the last decade, the exploitation of the existing water resources in the Asir region of the Kingdom of Saudi Arabia has considerably increased due to both the decrease in annual precipitation and the added population pressures from the growing tourist industry. To face the conventional water shortage, attention has been mainly focused on desalination of water. To save the region from severe water shortage, additional new water sources that are low-cost and renewable must be identified. There exists an alternative source of water such as fog water harvesting. Fog forms in the Asir Region more frequently between December and February compared to the other months of the year. This paper presents the study of the climatic conditions in the Asir region of the Kingdom to identify the most suitable location for fog water collection as well as design and testing of two large fog collectors (LFCs) of size 40 m2 along with standard fog collectors (SFCs) of 1 m2 in that region. During the period from 27 December 2009 to 9 March 2010, a total of 3,128.4 and 2,562.4 L of fog water were collected by the LFC at two sites in the Al-Sooda area of the Asir region, near Abha. Experimental results indicate that fog water collection can be combined with rain water harvesting systems to increase water yield during the rainy season. The quality of the collected fog water was analyzed and compared to the World Health Organization (WHO) drinking water standards and found to be potable. An economic analysis was carried out for the proposed method of obtaining fresh water from the fog. The study suggests a clear tendency that in terms of both quality and magnitude of yield, fog is a viable source of water and can be successfully used to supplement water supplies in the Asir region of the Kingdom.

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Abbreviations

CRF:

Capital recovery factor

FAC:

First annual cost, SR

M :

First annual cost of the system, SR

n :

Life of the system, years

N :

First annual salvage value, SR

P′:

Capital cost of the system, SR

r :

Interest rate, %

S :

Salvage value, SR

Y :

Yield, m3/year

References

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Acknowledgments

The authors are grateful for the financial support provided by King Abdulaziz City for Science and Technology (KACST) through Project No. AR-26-25 and the facilities provided by the King Fahd University of Petroleum and Minerals (KFUPM).

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Authors and Affiliations

  1. Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia

    P. Gandhidasan & H. I. Abualhamayel

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  1. P. Gandhidasan
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  2. H. I. Abualhamayel
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Correspondence to P. Gandhidasan.

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Gandhidasan, P., Abualhamayel, H.I. Exploring Fog Water Harvesting Potential and Quality in the Asir Region, Kingdom of Saudi Arabia. Pure Appl. Geophys. 169, 1019–1036 (2012). https://doi.org/10.1007/s00024-011-0341-z

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  • DOI: https://doi.org/10.1007/s00024-011-0341-z

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