Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Reexamination Certificate
2008-04-15
2008-04-15
Nguyen, Hoang (Department: 3748)
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
C060S653000, C060S671000
Reexamination Certificate
active
07356993
ABSTRACT:
The invention provides a method of converting heat energy to a more usable form using a multi-component working fluid mixture that contains ammonia and water. The working fluid is operated in a thermodynamic cycle that includes liquid compression (30), vaporization (33), expansion through a turbine (34) and condensing (36). The multi-component fluid varies in temperature during phase change allowing for the use of counter-flow heat exchangers for the heater (33), cooler (36), recuperator and pre-heater (32). Significant recuperation is possible due to the temperature change during phase change. A pre-heater (32) can be applied to ensure only single-phase vapour exists within the heater. The invention can be used in conjunction with a biomass combustor or with waste flue gas from an existing industrial process. The coolant exits at a temperature sufficient to allow use in external heating applications or to minimize the size of external heat rejection equipment.
REFERENCES:
patent: 4346561 (1982-08-01), Kalina
patent: 4422297 (1983-12-01), Rojey
patent: 4489563 (1984-12-01), Kalina
patent: 4548043 (1985-10-01), Kalina
patent: 5440882 (1995-08-01), Kalina
patent: 5557936 (1996-09-01), Drnevich
patent: 5664419 (1997-09-01), Kaplan
patent: 5822990 (1998-10-01), Kalina et al.
patent: 5953918 (1999-09-01), Kalina et al.
patent: 6347520 (2002-02-01), Ranasinghe et al.
patent: 6629413 (2003-10-01), Wendt et al.
patent: 6751959 (2004-06-01), McClanahan et al.
patent: 6941757 (2005-09-01), Kalina
patent: 6968690 (2005-11-01), Kalina
patent: 7007453 (2006-03-01), Maisotsenko et al.
patent: 2003/0000213 (2003-01-01), Christensen et al.
Advanced Power Cycles with Mixtures as the Working Fluid, Maria Jonsson, Doctoral Thesis, Department of Chemical Engineering and Technology, Energy Processes, Royal Institute of Technology, Stockholm, Sweden, 2003.
Power Cycles With Ammonia-Water Mixtures as Working Fluid, Eva Thorin Doctoral Thesis, Department of Chemical Engineering and Technology, Energy Processes, Royal Institute of Technology, Stockholm, Sweden, 2000.
Bonar Laurence C.
Nguyen Hoang
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