The AQUASOL system: Solar collector field efficiency and solar-only mode performance

Blanco, Julian, Alarcón, Diego, Guillén, Elena and Gernjak, Wolfgang (2011) The AQUASOL system: Solar collector field efficiency and solar-only mode performance. Journal of Solar Energy Engineering, 133 1: 011009.1-011009.6. doi:10.1115/1.4003291

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Author Blanco, Julian
Alarcón, Diego
Guillén, Elena
Gernjak, Wolfgang
Title The AQUASOL system: Solar collector field efficiency and solar-only mode performance
Journal name Journal of Solar Energy Engineering   Check publisher's open access policy
ISSN 0199-6231
Publication date 2011-02
Sub-type Article (original research)
DOI 10.1115/1.4003291
Volume 133
Issue 1
Start page 011009.1
End page 011009.6
Total pages 6
Place of publication New York, NY, U.S.A.
Publisher American Society of Mechanical Engineers
Collection year 2012
Language eng
Formatted abstract
Water scarcity is a global problem that will be of capital importance during the first half of this century, when seawater desalination will often be the only way to achieve sustainable development. Despite significant energy efficiency improvements during recent years, seawater desalination is still an intensive energy consumer; therefore, in the current instability of oil prices and environmental requirements, the sustainability of this technological solution inevitably passes through continued improvement of energy efficiency of the physical processes involved, as well as the use of renewable energy resources such as solar energy. In 2006, the "Enhanced Zero Discharge Seawater Desalination Using Hybrid Solar Technology" Project (AQUASOL) concluded with the erection of a complete solar desalination facility at the Plataforma Solar de Almeria (Spain) for the main purpose of developing an improved-cost, energy-efficient multi-effect distillation (MED) solar desalination technology. The system was designed to make the following three desalination operating modes feasible: (a) solar-only: the energy to the first distillation effect comes exclusively from thermal energy from the solar collector field, (b) fossil-only: a double-effect absorption heat pump powered by gas supplies all of the heat required by the distillation plant, and (c) hybrid: the energy comes from both the heat pump and the solar field. In this paper, solar-only mode system performance is presented and discussed. Optimum working conditions achieved in the solar-only mode were in the range of 64-67°C of MED first cell inlet temperature, which implies specific thermal energy consumption from around 58 kW hth / m3 to 62 kW hth / m 3 and a performance ratio of 11.1-10.4, respectively. © 2011 American Society of Mechanical Engineers.
Keyword Solar desalination
Multi-effect distillation
CPC solar collectors
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ
Additional Notes Article number 011009

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Advanced Water Management Centre Publications
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Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 14 Feb 2011, 11:30:42 EST by Dr Wolfgang Gernjak on behalf of Advanced Water Management Centre