Assessing the Effectiveness of Air-Bubble Plume Aeration in Reducing Evaporation from Farm Dams in Australia Using Modelling

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Title Assessing the Effectiveness of Air-Bubble Plume Aeration in Reducing Evaporation from Farm Dams in Australia Using Modelling
Author Helfer, Fernanda; Lemckert, Charles James; Zhang, Hong
Book Title Water Resources Management VI
Editor C.A. Brebbia, V. Popov
Year Published 2011
Place of publication United Kingdom
Publisher WIT Press
Abstract This paper aims to assess the effectiveness of artificial destratification by air-bubble plumes in reducing evaporation from farm dams in Australia. A one-dimensional model was applied to simulate the change in water temperature and evaporation rates of a real farm dam in Queensland under aeration conditions. Results show that destratification systems can reduce surface temperature, but the highest reduction in evaporation for the studied reservoir would be only 2.5%. The main conclusion is that it is unlikely that the technique will be feasible for small farm dams, given the high costs involved with the operation of an aeration system and the small quantity of water saved through evaporation reduction. The results also indicate that the technique may be effective for reservoirs that experience long periods of accentuated thermal stratification, such as large, deep dams, in which the mixing process would lead to higher reductions in surface temperature and, consequently, in evaporation rates.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.witpress.com/home.html
Chapter Number 8
Page from 485
Page to 496
ISBN 9781845645144
Date Accessioned 2011-06-14; 2012-02-28T04:26:10Z
Date Available 2012-02-28T04:26:10Z
Research Centre Centre for Infrastructure Engineering and Management
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Water Resources Engineering
URI http://hdl.handle.net/10072/43075
Publication Type Book Chapters
Publication Type Code b1

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