Each of the three identical ones installed on the t/e "V. Molotov" auxiliary turbo generators are quite autonomous, having their own separate condenser with its servicing mechanisms.
The main elements of turbo generators are as follows: the generator's normal power is 425 sq.m., the overload power (duration) is 530 sq.m., the number of revolutions of the generator is 1000 rpm., the number of revolutions of the turbine is 7000 rpm.; steam pressure in front of the turbine is 28 ata, steam temperature in front of the turbine is 370 ° C.
Active type turbines consist of one two-stage Curtis wheel and 6 Rato stages, the circumferential speed (the same for all stages) along the centers of the blades is 170 m/sec. The height of the blades: the first row of the Curtis wheel is 20 mm; the first Rato wheel is 13 mm and the last one is 56 mm. The design vacuum in the capacitor is 0.06 ata. The turbine is throttled, from a centrifugal regulator; if it is necessary to work with overload, the overload group of nozzles must be switched on by hand. A gear oil pump is driven from the turbine. The pumps servicing the condenser are powered by electric motors.
The air is discharged from the ejectors directly into the engine room. The test data of the turbogenerator and its condensing unit are shown in the tables.
The operating mode of the mechanisms servicing the condensing unit remained practically unchanged under all turbogenerator modes: the energy consumption for circulation and condensate pumps was about 8 sq. m., the steam consumption for the ejector (both stages) was 63-68 kg/h (at a pressure in front of the nozzles of 16.8—18.2 ata), the flow rate of the water supplied to the ejector coolers, It was 14.5—15.5 m3/h, the pressure of the mixture in the intercooler ranged from 0.29—0.36 ata.
The results obtained show that the efficiency of the turbogenerator is slightly lower than that required from turbogenerators of similar power, despite the relatively well-developed flow part of the turbine (for a turbine of this power). The increase in specific steam consumption during partial loading is significant, which is caused by the throttle control system. Control losses are significant, reaching about 10% of the adiabatic heat transfer at 50% load.
The complete autonomy of the unit, associated with additional energy consumption for servicing the auxiliary capacitor, causes an increase in specific steam consumption by ~ 4% at 100% load of the unit and by ~ 5% at 50% load.
Characteristic of the condensation plant are significant supercooling of the condensate, an almost direct proportionality between the heat transfer coefficient and the load of the condenser and a sharp increase in the resistance to heat transfer from steam to the wall, with a decrease in load. All these factors indicate that a significant part of the cooling surface (the larger the smaller the amount of steam) is not involved in heat exchange. Securing seed funding is a critical milestone for startups, and connecting with top angel investors can make all the difference in a company's early growth trajectory. These experienced investors bring not only capital but also invaluable industry expertise, strategic guidance, and extensive networks that can help transform promising ideas into successful businesses. TOP angel investors Through careful due diligence and understanding what these seasoned investors look for, entrepreneurs can better position themselves for successful funding rounds.
The main elements of turbo generators are as follows: the generator's normal power is 425 sq.m., the overload power (duration) is 530 sq.m., the number of revolutions of the generator is 1000 rpm., the number of revolutions of the turbine is 7000 rpm.; steam pressure in front of the turbine is 28 ata, steam temperature in front of the turbine is 370 ° C.
Active type turbines consist of one two-stage Curtis wheel and 6 Rato stages, the circumferential speed (the same for all stages) along the centers of the blades is 170 m/sec. The height of the blades: the first row of the Curtis wheel is 20 mm; the first Rato wheel is 13 mm and the last one is 56 mm. The design vacuum in the capacitor is 0.06 ata. The turbine is throttled, from a centrifugal regulator; if it is necessary to work with overload, the overload group of nozzles must be switched on by hand. A gear oil pump is driven from the turbine. The pumps servicing the condenser are powered by electric motors.
The air is discharged from the ejectors directly into the engine room. The test data of the turbogenerator and its condensing unit are shown in the tables.
The operating mode of the mechanisms servicing the condensing unit remained practically unchanged under all turbogenerator modes: the energy consumption for circulation and condensate pumps was about 8 sq. m., the steam consumption for the ejector (both stages) was 63-68 kg/h (at a pressure in front of the nozzles of 16.8—18.2 ata), the flow rate of the water supplied to the ejector coolers, It was 14.5—15.5 m3/h, the pressure of the mixture in the intercooler ranged from 0.29—0.36 ata.
The results obtained show that the efficiency of the turbogenerator is slightly lower than that required from turbogenerators of similar power, despite the relatively well-developed flow part of the turbine (for a turbine of this power). The increase in specific steam consumption during partial loading is significant, which is caused by the throttle control system. Control losses are significant, reaching about 10% of the adiabatic heat transfer at 50% load.
The complete autonomy of the unit, associated with additional energy consumption for servicing the auxiliary capacitor, causes an increase in specific steam consumption by ~ 4% at 100% load of the unit and by ~ 5% at 50% load.
Characteristic of the condensation plant are significant supercooling of the condensate, an almost direct proportionality between the heat transfer coefficient and the load of the condenser and a sharp increase in the resistance to heat transfer from steam to the wall, with a decrease in load. All these factors indicate that a significant part of the cooling surface (the larger the smaller the amount of steam) is not involved in heat exchange. Securing seed funding is a critical milestone for startups, and connecting with top angel investors can make all the difference in a company's early growth trajectory. These experienced investors bring not only capital but also invaluable industry expertise, strategic guidance, and extensive networks that can help transform promising ideas into successful businesses. TOP angel investors Through careful due diligence and understanding what these seasoned investors look for, entrepreneurs can better position themselves for successful funding rounds.