摘要:
A fogging device (26) for introducing water and/or vapor into an intake air flow (10, 27) of a gas turbine (1–3) includes a sound-absorbing device (31, 35). This device may in particular be designed in the form of Venturi tubes (31), the water (29) being fed to the air flow (27) via nozzles (33) arranged at the narrowest location. In this way, the spraying of water for increasing the power output or for generally regulating the gas turbine can at the same time be combined with a silencer, and this in a comparatively simple construction.
摘要:
In a method for the operation of a power plant with a closed or quasi-closed cycle, the power plant substantially comprises at least one compressor unit (1) or a pump, at least one combustion chamber (2), at least one turbine (3) and at least one heat sink (4). In the combustion chamber (2), a fuel mass flow (14) reacts with at least one oxygen flow (12), the excess combustion products which are formed as a result (CO2, H2O) are removed from the cycle at a suitable location (5, 6), and the oxygen stream (12) fed to the combustion chamber is obtained by means of an air fractionation installation (11). Means (9) for coarse fractionation of the supplied air (8) are connected upstream of the air fractionation installation (11) in order to supply oxygen-enriched air (10) to the air fractionation installation (11).
摘要:
In a method for operating a power plant by means of a CO2 process, isentropic compression first takes place, subsequently an isobaric heat supply, then isentropic expansion, and finally isobaric heat discharge. The CO2 process broken down here takes place with internal combustion, a fuel (21) and the oxygen (18) necessary for oxidization being supplied. After the charging of the CO2 circuit (23) has been carried out, the excess CO2 formed from combustion is discharged continuously, in that this gas is led through a cooler (14), in which said gas is condensed. In order to dispose of this condensed CO2 (15), there are available here, for example, the possibilities of storing this CO2 on the ocean floor or of introducing the condensed CO2 into a worked-out deposit of natural gas.
摘要:
In a method of operating a power station plant with a closed or virtually closed CO2 process, a fuel quantity (21) and oxygen (18) required in this regard for the oxidation are introduced into the cycle for the internal combustion. A recuperator (8) acts on the downstream side of a turbine (2) belonging to the power station plant, at least one heat sink (24) operating downstream of this recuperator before the cycle medium (6) flows back into a compressor (1) which likewise belongs to the power station plant. A partial quantity of the compressed cycle medium (10) is directed into a condensing plant, the liquid CO2 formed here being disposed of in the best possible way.
摘要:
In a method of operating a gas-turbine group, an exhaust-gas flow (9) of the gas-turbine group is admitted to a heat-exchange stage (14, 18), through which a liquid fuel (12) and a water quantity (16) flow. The thermally processed media (12, 16) are then brought together, whereby an emulsion (19) is formed, and this emulsion (19) is used to operate a burner of a combustion chamber. In this way, the spraying of this very hot emulsion (19) into the combustion air ensures good mixing.
摘要:
In a turbocharged diesel engine, the charge air is cooled in a charge air cooler designed as an injection intercooler. The water which has been introduced into the working medium of the diesel engine in the charge air cooler, after the working medium has been expanded, is condensed out of the exhaust gas by means of a condenser and a separator and is returned to the charge air cooler. According to the invention, the engine is started without injection of externally supplied water into the charge air cooler. Water which forms during the combustion in the diesel engine is condensed out of the exhaust-gas stream and returned to the charge air cooler. Additional water vapor formed continuously during operation through combustion of diesel fuel is likewise condensed out and introduced into the charge air cooler. In this way, the working medium is laden with moisture until the water mass flow that can be separated out of the exhaust gas is sufficient for the set cooling power of the charge air cooler. Further combustion water that is formed can be used for other purposes. In this way, engines with internal combustion in which water is introduced into the working medium can be operated without an external supply of water.
摘要:
In a method of operating a power station plant, which consists of a gas-turbine group (I), a steam-generating stage (II) consisting of a waste-heat steam generator (15), and a steam cycle (III), a liquid quantity increased above 100% circulates in a heat-exchange stage (15a), operating in the low temperature range, of the waste-heat steam generator (15). The portion above 100% of this liquid quantity is diverted at the end of said heat-exchange stage (15a) and is evaporated in at least one pressure stage (26). Steam (37) arising herein is then fed to a steam turbine (17) at a suitable point. A still hot liquid quantity (36) from the pressure stage (26) is fed into a feed-water tank and deaerator (22), and steam (33) arising herein is fed to a further steam turbine (18) at a suitable point.
摘要:
In a method of operating a combined-cycle plant which is based on a gas-turbine group, the compressor unit of this same gas-turbine group is equipped with an intercooler (9). By detecting parameters which comprise at least the ambient temperature (T), the air humidity (.phi.) of intake air (7) and the outlet pressure (Pic) of the intercooler (9), and by feeding the same to a computer (15), regulation is initiated by the latter, which regulation acts on members (17, 18) in the coolant circuit (13, 13a) between the intercooler (9) and a heat sink (14). The dew-point temperature of the cooled air (10), compressed to an intermediate pressure, downstream of the intercooler (9) is thereby influenced.
摘要:
In a power generation unit, especially in a gasturbo group, a gaseous process fluid is guided in a closed cycle. The gaseous process fluid flows through a compression device (1), a heater (6) and an expansion device (2), especially a turbine. Downstream from the expansion device at least one heat sink (11, 13) is arranged in which the gaseous process fluid is cooled before it is returned to the compressor device (1). At least one heat sink includes a waste heat steam generator in which an overheated amount of steam (26) is generated that is added to the compressed gaseous process fluid. Together with the gaseous process fluid the steam flows through the heater (6) if necessary and is expanded together with it. The expanded steam condenses in the waste heat steam generator (11) and another heat sink (13); the condensate is processed in a filter (16) and is returned to the waste heat steam generator (11) under pressure via a feed pump (18). Due to the closed process any kind of process fluid and process filling for controlling performance can be used.
摘要:
In a power generation plant having at least one gas turbine cycle with heat-recovery boiler (4) and at least one steam turbine cycle operated via the heat-recovery boiler (4), the gas turbine cycle being designed to be semi-closed and essentially free of emissions and essentially comprising a compressor (1), a combustion chamber (2) arranged downstream of the compressor (1), a gas turbine (3) arranged downstream of the combustion chamber (2), a heat-recovery boiler (4) arranged downstream of the gas turbine (3), and at least one generator (8) coupled to the gas turbine (3), modes of operation with the gas turbine cycle stopped and start-up using fresh air are made possible by first means (12) being arranged which alternatively or additionally allow hot gas to be fed into the hot-gas path (23) between gas turbine (3) and heat-recovery boiler (4), and by second means (15) being arranged which alternatively or additionally allow exhaust gas to be expelled from the exhaust-gas path (40) downstream of the heat-recovery boiler (4).