Alternative methods for the reduction of evaporation: practical exercises for the science classroom

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Title Alternative methods for the reduction of evaporation: practical exercises for the science classroom
Author Schouten, Peter William; Putland, Sam; Lemckert, Charles James; Parisi, Alfio V; Downs, Nathan
Journal Name Physics Education
Year Published 2012
Place of publication United Kingdom
Publisher Institute of Physics Publishing Ltd.
Abstract Across the world, freshwater is valued as the most critically important natural resource, as it is required to sustain the cycle of life. Evaporation is one of the primary environmental processes that can reduce the amount of quality water available for use in industrial, agricultural and household applications. The effect of evaporation becomes intensified especially during conditions of drought, particularly in traditionally arid and semi-arid regions, such as those seen in a number of countries over the past ten years. In order to safeguard against the influence of droughts and to save water from being lost to the evaporative process, numerous water saving mechanisms have been developed and tested over the past century. Two of the most successful and widely used mechanisms have included floating hard covers and chemical film monolayers. This article describes a laboratory based project developed for senior high school and first year university classes, which has been designed to introduce students to the concepts of evaporation, evaporation modelling and water loss mitigation. Specifically, these ideas are delivered by simulating the large scale deployment of both monolayers and floating hard covers on a small water tank under numerous user defined atmospheric and hydrodynamic conditions, including varying surface wind speeds and underwater bubble plumes set to changing flow rates.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1088/0031-9120/47/2/202
Volume 47
Issue Number 2
Page from 202
Page to 210
ISSN 0031-9120
Date Accessioned 2012-07-11; 2012-09-20T23:06:42Z
Date Available 2012-09-20T23:06:42Z
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Secondary Education; Surfacewater Hydrology
URI http://hdl.handle.net/10072/46961
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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