State Water Resources Research Institute Program

Project ID: 2008HI231B
Title: Experimental Study of Humidification-Dehumidification (HDH) Seawater Desalination Driven by Solar Energy
Project Type: Research
Start Date: 3/01/2009
End Date: 2/28/2010
Congressional District: First
Focus Categories: Water Supply
Keywords: freshwater supply, seawater desalination, humidification-dehumidification
Principal Investigator: Qu, Weilin
Federal Funds: $ 19,090
Non-Federal Matching Funds: $ 33,846
Abstract: The project explores the various thermal/fluid transport processes in humidification-dehumidification (HDH) seawater desalination systems driven by solar energy. The focus of the project is on experimental study of thermal/fluid transport processes in the following three critical system components: diffusion tower, direct contact condenser, and seawater solar heater. The proposed experiment study will complement the on-going theoretical modeling to provide a fundamental understanding and accurate predictive tools that are of paramount importance to design and optimization of HDH seawater desalination systems. HDH is a relatively new seawater desalination technology that relays on hot seawater evaporation and fresh water condensation. Major advantages of the technology include operation under near ambient pressure and low temperature, and utilization of renewable solar energy as well as other low-temperature thermal energy sources.

Progress/Completion Report, 2008, PDF
Progress/Completion Report, 2009, PDF
Progress/Completion Report, 2010, PDF

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