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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.ORCID iD: 0000-0002-8564-4360
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. , p. 22
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, id: diva2:996355
Note
Godkänd; 2012; 20121105 (jeli)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-06-26Bibliographically approved

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