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Experimental Study of Underground Irrigation by Condensation of Humid Air in Perforated Pipes
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0001-7144-9778
2012 (English)Report (Other academic)Alternative title
Experimental Study of Underground Irrigation by Condensation of Humid Air in Perforated Pipes (English)
Abstract [en]

A small scale Condensation Irrigation (CI) system was constructed to investigate the flow patterns of water, air and heat in the soil surrounding a perforated pipe from which water, heat and humid air was transferred. A 0.2 m long cross-section of sand and pipe was used to emulate a two-dimensional section of a CI system. Under these downscaled conditions, the mean irrigation rate in the sand box was 1.03 mm d-1. The major heat transfer mechanism in the sand profile was gas advection, which greatly reduced the sand temperature around the pipe.Nearly 50% of the vapour leaving the airflow inside the pipe, was transported to the sand surface by gas advection.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2012. , 22 p.
Series
Technical report / Luleå University of Technology, ISSN 1402-1536
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-23306Local ID: 66d3d152-2f89-4008-a6ca-2c3ac9e23adeISBN: 978-91-7439-513-6 (print)OAI: oai:DiVA.org:ltu-23306DiVA: diva2:996355
Note
Godkänd; 2012; 20121105 (jeli)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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