This paper aims to assess the effectiveness of artificial destratification by airbubble plumes in reducing evaporation from farm dams in Australia. A onedimensional 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.
|Title of host publication||Water Resources Management VI|
|Number of pages||12|
|Publication status||Published - 2011|
|Event||6th International Conference on Sustainable Water Resources Management, WRM 2011 - Riverside, Riverside, United States|
Duration: 23 May 2011 → 25 May 2011
|Conference||6th International Conference on Sustainable Water Resources Management, WRM 2011|
|Period||23/05/11 → 25/05/11|