Int. J. Simul. Multisci. Des. Optim.
Volume 5, 2014
|Number of page(s)||6|
|Published online||04 February 2014|
Low-grade waste heat driven desalination technology
School of Mechanical and Chemical Engineering, The University of Western Australia, 35 Stirling Hwy, Crawley
WA 6009, Australia
2 School of Earth and Environment, The University of Western Australia, 35 Stirling Hwy, Crawley WA 6009, Australia
3 School of Engineering, The University of Tasmania, Hobart TAS 7001, Australia
4 School of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province, P.R. China
* e-mail: email@example.com
Accepted: 13 November 2013
Low-grade heat driven multi-effect distillation (MED) desalination is a very promising environmentally friendly, low emission technology. Many countries, such as Australia, are water short and conventional desalination technology is energy intensive. If a primary fossil fuel source is used, then desalination will significantly contribute to carbon dioxide emission. Low-grade waste heat from process plants and power plants generate minimal additional carbon dioxide. This source of energy is typically abundant at a temperature around 65–90 °C, which dovetails with MED technology. In this paper, we report on a new MED technology that couples perfectly with low grade waste heat to give at least a 25% freshwater yield improvement compared with conventional MED design. Typical applications and their expected improvement will also be reported.
Key words: Distillation / MED / Waste heat / Low-grade heat / Sensible heat / Evaporator
© A. Christ et al., Published by EDP Sciences, 2014
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