Effect of Makeup Water Properties On the Condenser Fouling In Power Plant Cooling System

Monday, October 17, 2011: 4:15 PM
211 D (Minneapolis Convention Center)
Iman Safari1, Michael E. Walker1, Javad Abbasian1, Hamid Arastoopour2, Ming-Kai Hsieh3, David A. Dzombak3 and David C. Miller4, (1)Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, (2)Department of Chemical and Biological Engineering, Wanger Institute for Sustainable Energy Research (WISER), Illinois Institute of Technology, Chicago, IL, (3)Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, (4)U.S. Department Of Energy, National Energy Technology Laboratory, Morgantown, WV

The thermoelectric power industry in the U.S. uses a large amount of fresh water. As available freshwater for use in thermoelectric power production becomes increasingly limited, use of nontraditional water sources is of growing interest. Utilization of nontraditional water, in cooling systems increases the potential for mineral precipitation on heat exchanger surfaces. In that regard, predicting the accelerated rate of scaling and fouling in condenser is crucial to evaluate the condenser performance. To achieve this goal, water chemistry should be incorporated in cooling system modeling and simulation.

This paper addresses the effects of various makeup water properties on the cooling system, namely pH and aqueous speciation, both of which are important factors affecting the fouling rate in the main condenser. Detailed modeling of the volatile species desorption ( i.e. CO2 and NH3),  the formation of scale in the recirculating system , and the relationship between water quality and the corresponding fouling rates is presented.

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See more of this Session: Sustainable Water Use and Management
See more of this Group/Topical: Sustainable Engineering Forum