Method and system power production and assemblies for retroactive mounting in a system for power production
First Claim
1. A method for power production comprising the successive steps of pressurizing a working fluid containing oxygen, preferably air, supplying a first amount of heat to the working fluid by substantially complete combustion of a fuel in the working fluid, allowing the working fluid to expand for production of mechanical work, diverting a second amount of heat from the thus expanded working fluid at a pressure above atmospheric pressure, and, following the diversion of the second amount of heat, further expanding the working fluid, preferably to atmospheric pressure, preferably for production of additional mechanical work.
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Accused Products
Abstract
In a method which, owing to improved environmental properties, allows production of power, power and thermal energy, power and cold, or power, thermal energy and cold, a system includes a compression unit is used for pressurizing a working fluid containing oxygen, preferably air. The system further comprises a combustion unit which downstream of the compressing unit, as seen in the direction of flow of the working fluid, is arranged to supply a first amount of heat to the working fluid by substantially complete combustion of a fuel in the working fluid. An expansion unit is arranged to produce mechanical work during expansion of the working fluid. A heat recovery unit is arranged downstream of the expansion unit to divert a second amount of heat from the working fluid at a pressure above atmospheric pressure. The production of cold is made possible by further expansion of the working fluid in a subsequent, secondary expansion unit, by which the temperature of the working fluid can be made to be significantly below the ambient temperature. Assemblies are also provided for retroactive mounting in existing systems for power production including a gas turbine or an internal combustion engine.
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Citations
28 Claims
- 1. A method for power production comprising the successive steps of pressurizing a working fluid containing oxygen, preferably air, supplying a first amount of heat to the working fluid by substantially complete combustion of a fuel in the working fluid, allowing the working fluid to expand for production of mechanical work, diverting a second amount of heat from the thus expanded working fluid at a pressure above atmospheric pressure, and, following the diversion of the second amount of heat, further expanding the working fluid, preferably to atmospheric pressure, preferably for production of additional mechanical work.
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10. A system for power production comprising a compression unit (C1, C2;
- C1, E) for pressurizing a working fluid containing oxygen, preferably air, a combustion unit (CC;
E) which downstream of the compression unit (C1, C2;
C1, E), as seen in the direction of flow of the working fluid, is arranged to supply a first amount of heat to the working fluid by substantially complete combustion of a fuel in the working fluid, an expansion unit (T1;
E) which is arranged to produce mechanical work during expansion of the working fluid, and a heat recovery unit (HR) which downstream of the expansion unit (T1;
E) is arranged to divert a second amount of heat from the working fluid at a pressure above atmospheric pressure, and a secondary expansion unit (T2), which is arranged to receive the working fluid from the heat recovery unit (HR) and to further expand the working fluid, preferably to atmospheric pressure, preferably for production of additional mechanical work. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- C1, E) for pressurizing a working fluid containing oxygen, preferably air, a combustion unit (CC;
- 21. An assembly for retroactive mounting in a system for power production, said system comprising an internal combustion engine (E) which is arranged to pressurize a working fluid containing oxygen, to supply a first amount of heat to the working fluid by combustion of a fuel in the working fluid and to produce mechanical work during expansion of said working fluid, said assembly comprising a heat recovery unit (HR) which is connectable downstream of the internal combustion engine (E) for diversion of a second amount of heat from the working fluid at a pressure above atmospheric pressure and which is connectable to at least one turbine (T2), said turbine (T2) being arranged to drive at least one compressor (C1) arranged upstream of the internal combustion engine (E) through further expansion of the working fluid.
- 25. An assembly for retroactive mounting in a system for power production, said system comprising at least one compressor (C1, C2) which is arranged to pressurize a working fluid containing oxygen, at least one combustion chamber (CC) which is arranged downstream of said at least one compressor (C1, C2) to supply a first amount of heat to the working fluid by combustion of a fuel in the working fluid, at least one first and one second turbine (T1, T2) which are arranged downstream of said at least one combustion chamber (CC) for production of mechanical, work through expansion of the working fluid, said assembly comprising a heat recovery unit (HR) which is connectable downstream of said at least one first turbine (T1) and upstream of said at least one second turbine (T2) for diversion of a second amount of heat from the working fluid at a pressure above atmospheric pressure.
Specification