Abstract:
Systems and methods for storing and releasing energy comprising directing inlet air into a vertical cold flue assembly, a portion of moisture being removed from the air within the cold flue assembly. The air is directed out of the cold flue assembly and compressed. The remaining moisture is substantially removed and the carbon dioxide is removed from the air by adsorption. The air is cooled in a main heat exchanger such that it is substantially liquefied using refrigerant loop air. The substantially liquefied air is directed to a storage apparatus. The refrigerant loop air is cooled by a mechanical chiller and by a plurality of refrigerant loop air expanders. In energy release mode, working loop fluid warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the working loop fluid such that the working loop fluid is substantially liquefied. A portion of the released liquid air is directed to the at least one generator and used as bearing air for the at least one generator. The substantially vaporized air is directed to a combustion chamber and combusted with a fuel stream. Combustion gas may be directed from the combustion chamber to at least one expander and expanded in the expander, the expanded combustion gas split into a first portion and a second portion, the first portion being relatively larger than the second portion. The first portion may be directed to a first heat exchanger, and the second portion may be directed to a second heat exchanger such that the second portion heats and substantially vaporizes the released liquid air.
Abstract:
A gaseous hydrocarbon stream (10) is cooled against a first refrigerant and a second refrigerant, to produce a liquefied hydrocarbon stream (20). The first refrigerant is cycled in a first refrigerant circuit (100), comprising compressing in a first compressor train (110) comprising one or more first compressors on a common drive shaft (215). The second refrigerant is cycled in a second refrigerant circuit (200), comprising compressing in a second compressor train (210) comprising one or more second compressors on said common drive shaft (215). The common drive shaft (215) is driven with one single gas turbine (220). The single gas turbine (220) is a multiple shaft gas turbine with a shaft power for mechanical drive of at least 40 MW, comprising at least one auxiliary turbine (180) and at least one inlet air compressor (156) mechanically connected to the auxiliary turbine (180) via a first internal shaft (22), and a power turbine (190) drivingly engaged with the common drive shaft (215), which power turbine (190) is separately rotatable from the first internal shaft (22).
Abstract:
Systems and methods for storing and releasing energy comprise directing inlet air into a vertical cold flue assembly, cooling the air and removing a portion of moisture. The air is directed out of the cold flue assembly and compressed. The remaining moisture is substantially removed. The air is cooled in a main heat exchanger such that it is substantially liquefied using refrigerant loop air. The substantially liquefied air is directed to a storage apparatus. In energy release mode, working loop air warms the released liquid air such that the released liquid air is substantially vaporized, and the released liquid air cools the working loop air such that the working loop air is substantially liquefied. The substantially vaporized air is directed to a combustion chamber and combusted with a fuel stream. A portion of expanded combustion gas may be used to heat and substantially vaporize the released liquid air.
Abstract:
A reduced carbon dioxide emission system and method for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process.
Abstract:
A turbine includes a rotor (2) rotatable within a rotor chamber including a plurality of blades (5) about its periphery. Drag surfaces are created by the plurality of disc surfaces in the rotor (2), five discs being shown, and these receive a working fluid which is caused to flow spirally towards a central aperture (7) in the rotor (2). The working fluid may be provided at hypersonic or lower speeds and may be provided by a fuel burning means. A thermoelectric generator utilising the turbine is also disclosed.
Abstract:
Cogeneration of electricity and saleable refrigeration is achieved by passing pipeline gas with added methanol through a turbo-expander (17) coupled to an electrical generator (20) so that moisture in the gas forms an aqueous methanol condensate separable from the cold, expanded gas. The condensate is distilled (30) to separate discard water from recycle methanol (42). After recovering refrigeration therefrom, the expanded gas is warmed to a temperture above 32°F by adding all the required heat as reboiler (31) heat for the distillation (30) and passing the expanded gas in heat exchange (38) with distilled methanol vapor which is liquified and used partly as reflux (41) and partly as recycle methanol (42).
Abstract:
A heat exchanging system with electric power generation capability driven by temperature differences is formed by connecting a generator (66) instead of a compressor (4) to a heat exchanging system which has a heating cycle part (A) and a thermal power cycle part (B), wherein the heating cycle part (A) is formed by providing a compressor (4) driven by the thermal power cycle part (B) in a heating medium circulation line connecting a radiator (1) and an evaporator (2) and the thermal power cycle part (B) is formed by providing a turbo engine (12) in a thermal power medium circulation line connecting a condenser (11) and an evaporator (13), by connecting the output shaft (15) of the turbo engine (12) to the compressor (4) and, further, by providing a constant-temperature heat source (17) which heats the evaporator (13) of the thermal power medium circulation line. Without providing the turbo engine (12), compressor (4), or generator (66) with a special type of pressure-resistant construction, these are placed in a pressure vessel (20).