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Innovative Fresh Water Production Process for Fossil Fuel Plants. (Report for September 3, 2003 to September 2004).

DE2005835262

Publication Date	2004
Page Count	62
Abstract	This report describes the annual progress made in the development and analysis of a Diffusion Driven Desalination (DDD) system. A combined thermodynamic and dynamic analysis demonstrates that the DDD process can yield a fresh water production of 1.03 million gallon/day by utilizing waste heat from a 100 MW steam power plant based on a condensing steam pressure of only 3'' Hg. Throughout the past year, the main focus of the desalination process has been on the diffusion tower and direct contact condenser. Detailed heat and mass transfer analyses required to size and analyze these heat and mass transfer devices are described. An experimental DDD facility has been fabricated, and temperature and humidity data have been collected over a range of flow and thermal conditions. The analyses agree quite well with the current data and the information available in the literature. Direct contact condensers with and without packing have been investigated. It has been experimentally observed that the fresh water production rate is significantly enhanced when packing is added to the direct contact condensers.
Keywords	Desalination Diffusion Fresh water Energy sources Fossil fuels Thermodynamics Mass transfer Waste heat Power plants
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Florida Univ., Gainesville. Dept. of Mechanical and Aerospace Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200604

Innovative Fresh Water Production Process for Fossil Fuel Plants. (Report for September 3, 2003 to September 2004).

Innovative Fresh Water Production Process for Fossil Fuel Plants. (Report for September 3, 2003 to September 2004).
DE2005835262

Publication Date	2004
Page Count	62
Abstract	This report describes the annual progress made in the development and analysis of a Diffusion Driven Desalination (DDD) system. A combined thermodynamic and dynamic analysis demonstrates that the DDD process can yield a fresh water production of 1.03 million gallon/day by utilizing waste heat from a 100 MW steam power plant based on a condensing steam pressure of only 3'' Hg. Throughout the past year, the main focus of the desalination process has been on the diffusion tower and direct contact condenser. Detailed heat and mass transfer analyses required to size and analyze these heat and mass transfer devices are described. An experimental DDD facility has been fabricated, and temperature and humidity data have been collected over a range of flow and thermal conditions. The analyses agree quite well with the current data and the information available in the literature. Direct contact condensers with and without packing have been investigated. It has been experimentally observed that the fresh water production rate is significantly enhanced when packing is added to the direct contact condensers.
Keywords	Desalination Diffusion Fresh water Energy sources Fossil fuels Thermodynamics Mass transfer Waste heat Power plants
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Florida Univ., Gainesville. Dept. of Mechanical and Aerospace Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200604