81 |
Heat engine system including an integrated cooling circuit |
US15231047 |
2016-08-08 |
US10024198B2 |
2018-07-17 |
Timothy Held; Jason D. Miller |
A heat engine system and a method for cooling a fluid stream in thermal communication with the heat engine system are provided. The heat engine system may include a working fluid circuit configured to flow a working fluid therethrough, and a cooling circuit in fluid communication with the working fluid circuit and configured to flow the working fluid therethrough. The cooling circuit may include an evaporator in fluid communication with the working fluid circuit and configured to be in fluid communication with the fluid stream. The evaporator may be further configured to receive a second portion of the working fluid from the working fluid circuit and to transfer thermal energy from the fluid stream to the second portion of the working fluid. |
82 |
HEAT ENGINES, SYSTEMS FOR PROVIDING PRESSURIZED REFRIGERANT, AND RELATED METHODS |
US15576566 |
2016-05-25 |
US20180156072A1 |
2018-06-07 |
Keith Sterling Johnson |
A method for generating power from a heat source includes mixing a refrigerant in a liquid phase with a lubricating oil, heating the mixture to evaporate the refrigerant, mixing the heated mixture with additional refrigerant in a superheated phase, and atomizing the lubricating oil to disperse the lubricating oil within the refrigerant. The atomized lubricating oil and the refrigerant are passed through a decompressor to generate an electrical current. The refrigerant may be an organic material having a boiling point below about −35 C. Related systems and heat engines are also disclosed. |
83 |
CONTROL SYSTEM FOR SUPERCRITICAL WORKING FLUID TURBOMACHINERY |
US15649800 |
2017-07-14 |
US20180038245A1 |
2018-02-08 |
Matthew MOXON |
A turbomachinery control system for controlling supercritical working fluid turbomachinery. The control system includes a light emitter to project light through working fluid of the turbomachinery toward a primary light detector provided within a line of sight to the emitter. The system further includes one or more secondary light detectors spaced from the line of sight, and a controller determining one or both of an intensity of light detected by the primary detector relative to the detected light intensity by the secondary detector, and wavelength of light detected by the primary detector relative to wavelength of light detected by the secondary detector. The controller determines the working fluid proximity of the critical point based on one or both of the determined relative intensity and determined relative wavelength, and controlling an actuator to control turbomachinery inlet or outlet conditions in accordance with the working fluid determined proximity of the critical point. |
84 |
Working fluid for a device, device and method for converting heat into mechanical energy |
US14657567 |
2015-03-13 |
US09739179B2 |
2017-08-22 |
Brian Burg; Bruno Michel; Stephan Paredes |
A working fluid (6) for a device (4) for converting heat into mechanical energy is disclosed. The working fluid (6) comprises a fluid (7) having a boiling temperature in the range between 30 and 250° C. at a pressure of 1 bar and nanoparticles (8) which are dispersed or suspended in the liquid phase of the fluid (7). Said nanoparticles (8) are instrumented as condensation and/or boiling nuclei and the surface of said nanoparticles (8) is adapted to support condensation and/or boiling. |
85 |
HEAT ENGINE SYSTEM INCLUDING AN INTEGRATED COOLING CIRCUIT |
US15231047 |
2016-08-08 |
US20170130614A1 |
2017-05-11 |
Timothy Held; Jason D. Miller |
A heat engine system and a method for cooling a fluid stream in thermal communication with the heat engine system are provided. The heat engine system may include a working fluid circuit configured to flow a working fluid therethrough, and a cooling circuit in fluid communication with the working fluid circuit and configured to flow the working fluid therethrough. The cooling circuit may include an evaporator in fluid communication with the working fluid circuit and configured to be in fluid communication with the fluid stream. The evaporator may be further configured to receive a second portion of the working fluid from the working fluid circuit and to transfer thermal energy from the fluid stream to the second portion of the working fluid. |
86 |
ORGANIC RANKINE BINARY CYCLE POWER GENERATION SYSTEM |
US14437242 |
2015-03-23 |
US20170002695A1 |
2017-01-05 |
Yu Bee KIM |
An organic rankine binary cycle power generation system includes: a superheater heating a working fluid by exchanging heat with discharged heat; a turbine receiving the working fluid from the superheater and generating mechanical energy; a power generator connected to a power shaft of the turbine and generating power; a condenser keeping gas-state and liquid-state working fluids having passed through the turbine; a pump pumping the liquid-state working fluid in the condenser; a buffer tank disposed in a working fluid line between the pump and the superheater and keeping the gas-state and liquid-state working fluids; a compressor connected to the power shaft of the turbine, connected to the condenser and the buffer tank through diverging lines, respectively; and an expansion valve disposed in a bypass line connecting the buffer tank and the condenser and forcibly evaporating the working fluid moved by a pressure difference between the buffer tank and the condenser. |
87 |
WORKING FLUID FOR A DEVICE, DEVICE AND METHOD FOR CONVERTING HEAT INTO MECHANICAL ENERGY |
US14657567 |
2015-03-13 |
US20160265390A1 |
2016-09-15 |
Brian Burg; Bruno Michel; Stephan Paredes |
A working fluid (6) for a device (4) for converting heat into mechanical energy is disclosed. The working fluid (6) comprises a fluid (7) having a boiling temperature in the range between 30 and 250° C. at a pressure of 1 bar and nanoparticles (8) which are dispersed or suspended in the liquid phase of the fluid (7). Said nanoparticles (8) are instrumented as condensation and/or boiling nuclei and the surface of said nanoparticles (8) is adapted to support condensation and/or boiling. |
88 |
SYSTEM AND METHOD FOR STORING ENERGY IN FORM OF COMPRESSED AIR IN TUBES INTEGRATED IN A TANK CONTAINING WATER AND WATER VAPOUR |
US15013256 |
2016-02-02 |
US20160222881A1 |
2016-08-04 |
Christian WITTRISCH; Michel CONSTANT |
The present invention relates to a system and to a method for storing energy in form of compressed air, consisting of an assembly of connected tubes forming a storage volume, the assembly being confined in a pressure-resistant thermally-insulating tank. The storage system according to the invention comprises means for storing and releasing the heat of the compressed air so as to increase the storage system efficiency. |
89 |
Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US14533963 |
2014-11-05 |
US09382799B2 |
2016-07-05 |
Karl E. Stahlkopf; Danielle A. Fong; Stephen E. Crane; Edwin P. Berlin, Jr.; AmirHossein Pourmousa Abkenar |
A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. |
90 |
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. |
91 |
ORGANIC RANKINE CYCLE DECOMPRESSION HEAT ENGINE |
US14765735 |
2014-02-05 |
US20150369086A1 |
2015-12-24 |
Keith Sterling Johnson; Corey Jackson Newman |
An improved heat engine that includes an organic refrigerant exhibiting a boiling point below −35° C.; a heat source having a temperature of less than 82° C.; a heat sink; a sealed, closed-loop path for the organic refrigerant, the sealed, closed-loop path having both a high-pressure zone that absorbs heat from the heat source, and a low-pressure zone that transfers heat to the heat sink; a positive-displacement decompressor providing a pressure gradient through which the organic refrigerant in the gaseous phase flows continuously from the high-pressure zone to the low-pressure zone, the positive-displacement decompressor extracting mechanical energy due to the pressure gradient; and a positive-displacement hydraulic pump, which provides continuous flow of the organic refrigerant in the liquid phase from the low-pressure zone to the high-pressure zone, the hydraulic pump and the positive-displacement decompressor maintaining a pressure differential between the two zones of between about 20 to 42 bar. |
92 |
Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US13887235 |
2013-05-03 |
US08912684B2 |
2014-12-16 |
Karl E. Stahlkopf; Danielle A. Fong; Stephen E. Crane; Edwin P. Berlin, Jr.; AmirHossein Pourmousa Abkenar |
A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. |
93 |
SYSTEMS AND METHODS FOR EFFICIENT TWO-PHASE HEAT TRANSFER IN COMPRESSED-AIR ENERGY STORAGE SYSTEMS |
US14012236 |
2013-08-28 |
US20140000251A1 |
2014-01-02 |
Troy O. McBride; Benjamin R. Bollinger; Jon Bessette; Alexander Bell; Dax Kepshire; Arne LaVen; Adam Rauwerdink |
In various embodiments, foam is compressed to store energy and/or expanded to recover energy. |
94 |
ORGANIC FLASH CYCLES FOR EFFICIENT POWER PRODUCTION |
US13923159 |
2013-06-20 |
US20130341929A1 |
2013-12-26 |
Tony Ho; Samuel S. Mao; Ralph Greif |
This disclosure provides systems, methods, and apparatus related to an Organic Flash Cycle (OFC). In one aspect, a modified OFC system includes a pump, a heat exchanger, a flash evaporator, a high pressure turbine, a throttling valve, a mixer, a low pressure turbine, and a condenser. The heat exchanger is coupled to an outlet of the pump. The flash evaporator is coupled to an outlet of the heat exchanger. The high pressure turbine is coupled to a vapor outlet of the flash evaporator. The throttling valve is coupled to a liquid outlet of the flash evaporator. The mixer is coupled to an outlet of the throttling valve and to an outlet of the high pressure turbine. The low pressure turbine is coupled to an outlet of the mixer. The condenser is coupled to an outlet of the low pressure turbine and to an inlet of the pump. |
95 |
Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems |
US13755636 |
2013-01-31 |
US08539763B2 |
2013-09-24 |
Troy O. McBride; Benjamin R. Bollinger; Jon Bessette; Alexander Bell; Dax Kepshire; Arne La Ven; Adam Rauwerdink |
In various embodiments, foam is compressed to store energy and/or expanded to recover energy. |
96 |
Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US13775091 |
2013-02-22 |
US08482152B1 |
2013-07-09 |
Karl E. Stahlkopf; Danielle A. Fong; Stephen E. Crane; Edwin P. Berlin, Jr.; AmirHossein Pourmousa Abkenar |
A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. |
97 |
COMPRESSED AIR ENERGY STORAGE SYSTEM UTILIZING TWO-PHASE FLOW TO FACILITATE HEAT EXCHANGE |
US13775091 |
2013-02-22 |
US20130168961A1 |
2013-07-04 |
Karl E. Stahlkopf; Danielle A. Fong; Stephen E. Crane; Edwin P. Berlin, JR.; AmirHossein Pourmousa Abkenar |
A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. |
98 |
VALVE ACTIVATION IN COMPRESSED-GAS ENERGY STORAGE AND RECOVERY SYSTEMS |
US13715093 |
2012-12-14 |
US20130152571A1 |
2013-06-20 |
Jeffery Modderno; Samar Shah; Randall Strauss; Joel Berg; Troy O. McBride; Benjamin R. Bollinger; David Perkins; Arne LaVen |
In various embodiments, valve efficiency and reliability are enhanced via use of hydraulic or magnetic valve actuation, valves configured for increased actuation speed, and/or valves controlled to reduce collision forces during actuation. |
99 |
Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US13010683 |
2011-01-20 |
US08436489B2 |
2013-05-07 |
Karl E. Stahlkopf; Danielle A. Fong; Stephen E. Crane; Edwin P. Berlin, Jr.; AmirHossein Pourmousa Abkenar |
A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. |
100 |
SYSTEMS AND METHODS FOR FOAM-BASED HEAT EXCHANGE DURING ENERGY STORAGE AND RECOVERY USING COMPRESSED GAS |
US13644534 |
2012-10-04 |
US20130074941A1 |
2013-03-28 |
Troy O. McBride; Benjamin Bollinger; Jon Bessette; Dax Kepshire; Arne LaVen; Adam Rauwerdink; Alexander Bell |
In various embodiments, foam is compressed to store energy and/or expanded to recover energy. |