The combined use of shade-cloth covers and monolayers to prevent evaporation in irrigation reservoirs
Poster
Paper/Presentation Title | The combined use of shade-cloth covers and monolayers to prevent evaporation in irrigation reservoirs |
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Presentation Type | Poster |
Authors | Gallego-Elvira, B. (Author), Martinez Alvarez, V. (Author), Pittaway, Pam (Author), Symes, Troy (Author) and Hancock, Nigel (Author) |
Number of Pages | 9 |
Year | 2010 |
Conference/Event | International Conference on Agricultural Engineering: Towards Environmental Technologies (2010) |
Event Details | International Conference on Agricultural Engineering: Towards Environmental Technologies (2010) Event Date 06 to end of 08 Sep 2010 Event Location Clermont-Ferrand, France |
Abstract | One of the most efficient techniques to prevent evaporation is suspended shade covers, reported to reduce evaporation up to 85%, although at considerable cost. Another option is the application of a chemical monolayer which creates a film over the water surface that can reduce evaporation, but performance of these is limited by environmental exposure. In this study, a detailed trial was conducted in southern Queensland (Australia) to assess the benefits of the combined use of monolayers and shade-cloth covers. Three experimental tanks were monitored to measure evaporation, water temperature profile and the meteorological factors driving evaporative demand. Tanks 1 and 2 were covered with a black polyethylene mesh; a monolayer was added to Tank 2; and Tank 3 was uncovered and used as a control. The comparison of Tanks 1 and 2 with Tank 3 provided the evaporation reduction factors. The differences between the reduction factors of Tanks 2 and 3 allowed assessment of the performance of the combination of the two evaporation-suppression methods. |
Keywords | polyethylene meshes, storage efficiency, water management |
ANZSRC Field of Research 2020 | 370199. Atmospheric sciences not elsewhere classified |
Public Notes | Unrefereed paper. No evidence of copyright restrictions. |
Byline Affiliations | Polytechnic University of Cartagena, Spain |
National Centre for Engineering in Agriculture |
https://research.usq.edu.au/item/q01q3/the-combined-use-of-shade-cloth-covers-and-monolayers-to-prevent-evaporation-in-irrigation-reservoirs
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