261 |
CONTROLLING TURBOPUMP THRUST IN A HEAT ENGINE SYSTEM |
US14774337 |
2014-03-12 |
US20160017759A1 |
2016-01-21 |
Suyash Gayawal; Michael Louis Vermeersch |
A heat engine system and a method are provided for generating energy by transforming thermal energy into mechanical and/or electrical energy, and for controlling a thrust load applied to a turbopump of the heat engine system. The generation of energy may be optimized by controlling a thrust or net thrust load applied to a turbopump of the heat engine system. The heat engine system may include one or more valves, such as a turbopump throttle valve and/or a bearing drain valve, which may be modulated to control the thrust load applied to the turbopump during one or more modes of operating the heat engine system. |
262 |
RECOVERY SYSTEM USING FLUID COUPLING ON POWER GENERATING SYSTEM |
US14848520 |
2015-09-09 |
US20150377075A1 |
2015-12-31 |
Hiroshi OGATA |
A power generating system can recover exhaust heat from a working fluid of a fluid coupling and utilize the recovered exhaust heat to generate power. In the power generating system, water is supplied to a boiler by a feed pump to generate steam, a steam turbine is driven by using the generated steam to generate power, the steam discharged from the steam turbine is condensed in a condenser, and then the condensed water is resupplied to the boiler by the feed pump. The power generating system includes a fluid coupling provided between the feed pump and a motor to transmit a torque from the motor to the feed pump by a working fluid, and the condensed water supplied from the condenser is heated by the working fluid discharged from the fluid coupling. |
263 |
Recovery system using fluid coupling on power generating system |
US13520641 |
2010-09-28 |
US09188027B2 |
2015-11-17 |
Hiroshi Ogata |
A power generating system can recover exhaust heat from a working fluid of a fluid coupling and utilize the recovered exhaust heat to generate power. In the power generating system, water is supplied to a boiler by a feed pump to generate steam, a steam turbine is driven by using the generated steam to generate power, the steam discharged from the steam turbine is condensed in a condenser, and then the condensed water is resupplied to the boiler by the feed pump. The power generating system includes a fluid coupling provided between the feed pump and a motor to transmit a torque from the motor to the feed pump by a working fluid, and the condensed water supplied from the condenser is heated by the working fluid discharged from the fluid coupling. |
264 |
AERO BOOST - GAS TURBINE ENERGY SUPPLEMENTING SYSTEMS AND EFFICIENT INLET COOLING AND HEATING, AND METHODS OF MAKING AND USING THE SAME |
US14419853 |
2013-10-03 |
US20150240713A1 |
2015-08-27 |
Robert J. Kraft |
The invention relates generally to electrical power systems, including generating capacity of a gas turbine, and more specifically to pressurized air injection that is useful for providing additional electrical power during periods of peak electrical power demand from a gas turbine system power plant, as well as to inlet heating to allow increased engine turn down during periods of reduced electrical demand. |
265 |
SYSTEM FOR STORING AND OUTPUTTING THERMAL ENERGY HAVING A HEAT ACCUMULATOR AND A COLD ACCUMULATOR AND METHO FOR THE OPERATION THEREOF |
US14394094 |
2013-03-27 |
US20150136351A1 |
2015-05-21 |
Daniel Reznik; Henrik Stiesdal |
A system for storing and outputting thermal energy and a method for operating the system are provided. The system has a heat accumulator and a cold accumulator. The heat accumulator and the cold accumulator are discharged in two separate discharging circuits, wherein the thermal energy is converted into electrical energy, for example by a generator. The residual heat from the process in the circuit can be advantageously fed to the process in the circuit by a first heat exchanger, whereby the total efficiency is advantageously improved. Furthermore, the heat from the heat accumulator can be advantageously transferred into the first circuit by a waste-heat steam generator. The heat accumulator and the cold accumulator can be charged, for example, with excess energy from the electric network by a motor. Excess energy reserves of alternative energy resources, for example, can thus be stored. |
266 |
SYSTEMS, METHODS, AND DEVICES FOR LIQUID AIR ENERGY STORAGE IN CONJUNCTION WITH POWER GENERATING CYCLES |
US14524815 |
2014-10-27 |
US20150113940A1 |
2015-04-30 |
STANISLAV SINATOV; LEON AFREMOV; ARNOLD J. GOLDMAN |
Systems, methods, and devices are provided for liquid air energy storage in conjunction with power generating cycles. A system can comprise a power generation apparatus and an energy storage apparatus. The energy storage apparatus can comprise a thermal energy storage unit, and the power generation apparatus and energy storage apparatus can be interconnected via the thermal energy storage unit enabling energy transfer from a first cycle of one of the power generation apparatus and energy storage apparatus to a second cycle of the other apparatus. |
267 |
Organic rankine cycle system |
US14375667 |
2012-03-15 |
US09003798B2 |
2015-04-14 |
Hideharu Yanagi |
The application discloses an organic Rankine Cycle system with a generating unit, a condenser for condensing an organic work fluid, a feeder pump for circulating the organic work fluid and an evaporator (14) for evaporating the organic work fluid. The generating unit comprises a high-pressure screw expander and a low-pressure screw expander, which are connected in series, wherein the high-pressure screw expander and the low-pressure screw expander are mechanically connectable to a generator, which is provided between the high-pressure screw expander and the low-pressure screw expander. The ORC system comprises a by-pass line for bypassing the high-pressure screw expander. The bypass line comprises a control valve for opening and closing the by-pass line. |
268 |
Compressed air energy system integrated with gas turbine |
US14037217 |
2013-09-25 |
US09003763B2 |
2015-04-14 |
Michael Coney |
An apparatus performs a power cycle involving expansion of compressed air utilizing high pressure (HP) and low pressure (LP) air turbines located upstream of a gas turbine. The power cycle involves heating of the compressed air prior to its expansion in the HP and LP air turbines. Taking into consideration fuel consumption to heat the compressed air, particular embodiments may result in a net production of electrical energy of ˜2.2-2.5× an amount of energy consumed by substantially isothermal air compression to produce the compressed air supply. Although pressure of the compressed air supply may vary over a range (e.g. as a compressed air storage unit is depleted), the gas turbine may run under almost constant conditions, facilitating its integration with the apparatus. The air turbines may operate at lower temperatures than the gas turbine, and they may include features of turbines employed to turbocharge large reciprocating engines. |
269 |
Apparatus and method for increasing power plant efficiency at partial loads |
US13412155 |
2012-03-05 |
US08955322B2 |
2015-02-17 |
Lucien Y. Bronicki; David Machlev |
For increasing power plant efficiency during periods of variable heat input or at partial loads, a motive fluid is cycled through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission. A percentage of a superheated portion of the motive fluid is adjusted during periods of variable heat input or at partial loads while virtually maintaining the inlet temperature and power plant thermal efficiency. |
270 |
SOLAR CHIMNEY WITH EXTERNAL VERTICAL AXIS WIND TURBINE |
US14366091 |
2012-04-05 |
US20140373537A1 |
2014-12-25 |
Pitaya Yangpichit |
The solar chimney of the present invention comprises an elongated chamber having an inlet end and an outlet end, the chamber defining a path for fluid, such as air, from the inlet to the outlet. Air updrafts in the chamber drive an internal turbine which is connected to an electric generator, or to some other machine.The chamber has the general configuration of an hourglass; the diameter of the chamber becomes progressively smaller with distance from the inlet end, until the diameter reaches a minimum value, then becomes progressively larger, as one proceeds towards the outlet end.Disposed within the chamber are one or more means for heating air in the chamber by solar and/or wind energy. In particular, there may be a solar collector inside the chamber which receives direct solar radiation from outside the chamber. The solar collector may also be configured to function as a heat exchanger. There may also be a heat exchanger, located inside the chamber, wherein the heat exchanger receives heat energy transferred from a solar collector located outside the chamber. There may also be a heat exchanger, located in the chamber wherein the heat exchanger receives heat energy transferred from wind energy storage system located outside the chamber. Any or all the above alternatives may be part of the present invention.The solar chimney of the present invention includes an external vertical axis wind turbine mounted for rotation relative and around the solar chimney or using the chimney as a shaft. This external vertical axis wind turbine is surrounded by an outer annular cylindrical cage with a set of vanes, forming a series of ducts, resulting in higher pressure and faster rotation of the wind turbine. This wind turbine captures energy of wind in the surrounding environment. This wind energy is used to generate electrical power, which may be amalgamated with output from the internal turbine, or it can be stored in the wind energy storage system for later use. |
271 |
POWER GENERATING SYSTEM AND METHOD BY COMBINING MEDIUM-AND-LOW TEMPERATURE SOLAR ENERGY WITH FOSSIL FUEL THERMOCHEMISTRY |
US14345465 |
2012-11-13 |
US20140373536A1 |
2014-12-25 |
Hongguang Jin; Qibin Liu; Hui Hong; Jun Sui; Wei Han |
The present invention provides a power generating system by combining medium-and-low temperature solar energy and fossil fuel with thermochemical process, the system comprising: a material supply device configured to store fossil fuel; a material mixing device configured to mix the fossil fuel with non-reacted reactant; a material metering device configured to control an amount of material fed to a material preheating device in unit time; a material preheating device configured to heat the material; a solar energy absorption and reaction device configured to drive the fossil fuel by using solar thermal energy absorbed to make a decomposition reaction or reforming reaction, through which the solar energy is converted to chemical energy of hydrogen-rich fuel, obtaining solar-energy fuel; a solar energy heat collecting device configured to collect the solar energy with low energy flux density to medium-and-low temperature solar thermal energy with high energy flux density, so as to provide heat to decomposition reaction or reforming reaction; a condenser configured to cool reaction products; a gas-liquid separating device configured to perform gas-liquid separation for the cooled mixture; a fuel bypassing device configured to adjust a proportion of solar-energy fuel for storage to that for generating; a gas storing tank to store solar-energy fuel; a power generating apparatus to burnt the solar-energy fuel to output power. The invention achieves a higher efficiency of usage of solar energy. |
272 |
Rankine cycle integrated with organic rankine cycle and absorption chiller cycle |
US12949865 |
2010-11-19 |
US08904791B2 |
2014-12-09 |
Matthew Alexander Lehar; Sebastian Walter Freund; Thomas Johannes Frey; Gabor Ast; Pierre Sebastien Huck; Monika Muehlbauer |
A power generation system is provided. The system comprises a first Rankine cycle-first working fluid circulation loop comprising a heater, an expander, a heat exchanger, a recuperator, a condenser, a pump, and a first working fluid; integrated with a) a second Rankine cycle-second working fluid circulation loop comprising a heater, an expander, a condenser, a pump, and a second working fluid comprising an organic fluid; and b) an absorption chiller cycle comprising a third working fluid circulation loop comprising an evaporator, an absorber, a pump, a desorber, a condenser, and a third working fluid comprising a refrigerant. In one embodiment, the first working fluid comprises CO2. In one embodiment, the first working fluid comprises helium, air, or nitrogen. |
273 |
SYSTEM AND METHOD OF WASTE HEAT RECOVERY |
US13905811 |
2013-05-30 |
US20140352308A1 |
2014-12-04 |
Matthew Alexander Lehar; Pierre Sebastien Huck; Christian Vogel |
A novel Rankine cycle system configured to convert waste heat into mechanical and/or electrical energy is provided. In one aspect, the system provided by the present invention comprises a novel configuration of the components of a conventional Rankine cycle system; conduits, ducts, heaters, expanders, heat exchangers, condensers and pumps to provide more efficient energy recovery from a waste heat source. In one aspect, the Rankine cycle system is configured such that an initial waste heat-containing stream is employed to vaporize a first working fluid stream, and a resultant heat depleted waste heat-containing stream is employed to aid in the production of a second vaporized working fluid stream. The Rankine cycle system is adapted for the use of supercritical carbon dioxide as the working fluid. |
274 |
ENERGY STORAGE INSTALLATION WITH OPEN CHARGING CIRCUIT FOR STORING SEASONALLY OCCURRING EXCESS ELECTRICAL ENERGY |
US14364380 |
2012-11-13 |
US20140338330A1 |
2014-11-20 |
Christian Brunhuber; Carsten Graeber; Gerhard Zimmermann |
An energy storage device for storing thermal energy, with a charging circuit for a working gas, is provided, having a compressor, heat accumulator and expansion turbine, the compressor and expansion turbine arranged on a common shaft, and the compressor connected on the outlet side to the inlet of the expansion turbine via a first line for the working gas, the heat accumulator wired into the first line, wherein the compressor is connected on the inlet side to a line, which is open to the atmosphere, and the expansion turbine is connected on the outlet side to a line, which is open to the atmosphere such that a circuit open to the ambient air is formed, wherein the expansion turbine is connected to the heat accumulator via a line for a hot gas such that the working gas in the expansion turbine can be heated by heat from the heat accumulator. |
275 |
HIGH-TEMPERATURE ENERGY STORE WITH RECUPERATOR |
US14358150 |
2012-09-07 |
US20140298813A1 |
2014-10-09 |
Christian Brunhuber; Carsten Graeber; Gerhard Zimmermann |
A charging circuit for converting electrical energy into thermal energy is provided, having a compression stage, connected via a shaft to an electric motor, a heat exchanger and an expansion stage, which is connected via a shaft to a generator, wherein the compression stage is connected to the expansion stage via a hot-gas line, and the heat exchanger is connected on the primary side into the hot-gas line, wherein the expansion stage is connected via a return line to the compression stage, so that a closed circuit for a working gas is formed. A recuperator is also provided which, on the primary side, is connected into the hot-gas line between the heat exchanger and the expansion stage and, on the secondary side, is connected into the return line, so that heat from the working gas in the hot-gas line can be transferred to the working gas in the return line. |
276 |
STEAM POWER CYCLE SYSTEM |
US14201406 |
2014-03-07 |
US20140245737A1 |
2014-09-04 |
Yasuyuki IKEGAMI; Sadayuki JITSUHARA; Taro WATANABE; Shin OKAMURA |
There is provided a steam power cycle system in which steam power cycles using pure materials as a working fluid is used in a multiple stage to reduce pressure loss in the flow channels in the respective heat exchanger so that the fluid serving as heat sources has been caused to make an effective heat exchange with the working fluid. More specifically, not only that the respective flow channels for the fluid serving as heat sources in the evaporator and the condenser in the respective steam power cycle units are connected in series to each other, but the evaporator and the condenser comprise a cross-flow type heat exchanger and are arranged respectively in a flowing direction of the fluid serving as heat source. Consequently, it is possible to reduce the length of the flow channels to the minimum necessary, simplify the flow channel structure, and reduce the pressure loss. |
277 |
COMPRESSED AIR ENERGY SYSTEM INTEGRATED WITH GAS TURBINE |
US14037217 |
2013-09-25 |
US20140096523A1 |
2014-04-10 |
Michael CONEY |
An apparatus performs a power cycle involving expansion of compressed air utilizing high pressure (HP) and low pressure (LP) air turbines located upstream of a gas turbine. The power cycle involves heating of the compressed air prior to its expansion in the HP and LP air turbines. Taking into consideration fuel consumption to heat the compressed air, particular embodiments may result in a net production of electrical energy of ˜2.2-2.5× an amount of energy consumed by substantially isothermal air compression to produce the compressed air supply. Although pressure of the compressed air supply may vary over a range (e.g. as a compressed air storage unit is depleted), the gas turbine may run under almost constant conditions, facilitating its integration with the apparatus. The air turbines may operate at lower temperatures than the gas turbine, and they may include features of turbines employed to turbocharge large reciprocating engines. |
278 |
HIGH EFFICIENCY POWER GENERATION SYSTEM AND SYSTEM UPGRADES |
US13971273 |
2013-08-20 |
US20140053560A1 |
2014-02-27 |
William Edward Simpkin |
A thermal/electrical power converter includes a gas turbine with an input couplable to an output of an inert gas thermal power source, a compressor including an output couplable to an input of the inert gas thermal power source, and a generator coupled to the gas turbine. The thermal/electrical power converter also includes a heat exchanger with an input coupled to an output of the gas turbine and an output coupled to an input of the compressor. The heat exchanger includes a series-coupled super-heater heat exchanger, a boiler heat exchanger and a water preheater heat exchanger. The thermal/electrical power converter also includes a reservoir tank and reservoir tank control valves configured to regulate a power output of the thermal/electrical power converter. |
279 |
SYSTEM CONFIGURED TO CONTROL AND POWER A VEHICLE OR VESSEL |
US13859577 |
2013-04-09 |
US20130229051A1 |
2013-09-05 |
Jason Craig |
A system configured to power a vehicle or vessel. The system may include an enhanced power control system. The enhanced power control system having a distributed architecture such that power conversion and/or management is provided for individual energy supplies and/or system loads. The distributed architecture of the power control system may enhance the power efficiency of the vehicle or vessel. The distributed architecture of the power control system may enable a plurality of different energy supplies and/or system loads to be incorporated into the power system in a selectable, configurable manner. This may facilitate the addition and/or subtraction of energy supplies and/or system loads from the system to customize the vehicle or vessel for a specific use and/or mission without having to reconfigure the power control system as a whole. |
280 |
APPARATUS AND METHOD FOR INCREASING POWER PLANT EFFICIENCY AT PARTIAL LOADS |
US13412155 |
2012-03-05 |
US20130227947A1 |
2013-09-05 |
Lucien Y. BRONICKI; David MACHLEV |
For increasing power plant efficiency during periods of variable heat input or at partial loads, a motive fluid is cycled through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission. A percentage of a superheated portion of the motive fluid is adjusted during periods of variable heat input or at partial loads while virtually maintaining the inlet temperature and power plant thermal efficiency. |