Power System Involving Change Of State Patents (Class 60/670)
  • Patent number: 9766011
    Abstract: The present invention is a process for removing carbon dioxide from a compressed gas stream including cooling the compressed gas in a first heat exchanger, introducing the cooled gas into a de-sublimating heat exchanger, thereby producing a first solid carbon dioxide stream and a first carbon dioxide poor gas stream, expanding the carbon dioxide poor gas stream, thereby producing a second solid carbon dioxide stream and a second carbon dioxide poor gas stream, combining the first solid carbon dioxide stream and the second solid carbon dioxide stream, thereby producing a combined solid carbon dioxide stream, and indirectly exchanging heat between the combined solid carbon dioxide stream and the compressed gas in the first heat exchanger.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: September 19, 2017
    Assignee: NEWVISTAS CAPITAL, LLC
    Inventors: Larry Baxter, Paul Terrien, Pascal Tessier, Christopher Hoeger
  • Patent number: 9745870
    Abstract: 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.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: August 29, 2017
    Assignee: Heat Source Energy Corp.
    Inventors: Keith Sterling Johnson, Corey Jackson Newman
  • Patent number: 9599015
    Abstract: A device for utilizing waste heat from an engine, which is provided with a Rankine cycle device having an expander bypass passage and a bypass valve that opens and closes the expander bypass passage, and transmits the output torque Tr of the Rankine cycle device to the engine, estimates the output torque Tr of the Rankine cycle device accurately. An output calculation part includes a torque estimation portion that estimates the torque of an expander. The torque estimation portion has a first torque estimation equation corresponding to an opening position of a bypass valve, and a second torque estimation equation corresponding to a closed position of the bypass valve. The output calculation part calculates an output torque Tr of a Rankine cycle device, based on a torque estimated value by the first or second torque estimation equation.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: March 21, 2017
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Tomonori Haraguchi, Hajime Makino, Hiroyuki Nagai
  • Patent number: 9551240
    Abstract: A system of recycling exhaust heat from an internal combustion engine may include an EGR line circulating a portion of exhaust gas generated from the engine to an intake side, a working fluid circulating line configured to have a working fluid satisfying a Rankine cycle, which is circulated therein, and an EGR side heat exchanging unit configured to perform a heat-exchange between an EGR gas flowing in the EGR line and the working fluid flowing in the working fluid circulating line. When a temperature of the EGR gas is equal to or greater than a reference temperature T1, the EGR gas is circulated to the intake side via the EGR side heat exchanging unit, and when the temperature of the EGR gas is less than the reference temperature T1, the EGR gas is circulated to the intake side without passing through the EGR side heat exchanging unit.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: January 24, 2017
    Assignee: Hyundai Motor Company
    Inventors: You Sang Son, Kyoung Heo
  • Patent number: 9272330
    Abstract: A method for managing heat energy in a metal casting plant includes executing a local control optimization model to control mass of solid metal charges to each modular melting furnace. The local control optimization model is configured to achieve a commanded total mass of molten material and coincidentally minimize waste heat for each of the modular melting furnaces. The method for managing heat energy in the metal casting plant further includes executing a system control optimization model to manage operation of a heat energy recovery system. The system control optimization model is configured to manage the operation of the heat energy recovery system including transferring the waste heat from the modular melting furnaces to a plurality of heat demand centers while minimizing total loss of the waste heat in the metal casting plant.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: March 1, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jorge F. Arinez, Alaa Elwany, Stephan R. Biller, Robert K. Baird, Jr., James Benjamin D'Arcy
  • Patent number: 9140732
    Abstract: The present device includes a high frequency induction thermal plasma generation unit 10; a second tube portion 20, which is connected to a first tube portion 13 and which includes window 25 on at least one side surface; and a testing subject installing pedestal 23 configured to be fixedly attached at a reference position in the second tube portion 20, wherein the testing subject installing pedestal 23 includes a seating portion for installing the testing subject 40, and a hold-down portion for fixing the installed testing subject 40 with a part of the testing subject exposed; and an ablated vapor generated from the testing subject is observed through the window from an outer side of the second tube portion.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: September 22, 2015
    Assignee: KANEKA CORPORATION
    Inventors: Yasunori Tanaka, Masahiro Ishida, Naoki Shinsei, Hiroyasu Hagi, Atsushi Mizobuchi
  • Publication number: 20150143808
    Abstract: The present disclosure provides a turbine generation system, including a first turbine part that is configured to have a first impeller rotated by an introduced fluid, and a second turbine part that is configured to have a second impeller rotated by steam, evaporated within a cycle unit, in which the fluid circulates along a rankine cycle, wherein the fluid, which is discharged from the first turbine part after rotating the first impeller, is heat-exchanged with a refrigerant of an evaporator disposed in the cycle unit.
    Type: Application
    Filed: April 29, 2014
    Publication date: May 28, 2015
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yong Bok LEE, Se Na JEONG, Chang Ho KIM, Bok Seong CHOE
  • Publication number: 20150144500
    Abstract: An energy production and distribution system, a hydrogen production and distribution system, and a method are disclosed. The energy production and distribution system may include one or more previously decommissioned maritime resources positioned in floating and/or adjacent disposition with a body of water. An electricity generating apparatus may be disposed in an off-grid configuration on each of the maritime resources to generate electricity. Electrolysis electrodes may be electrically coupled with the electricity generating apparatus and may disposed to make contact with water in the body of water to perform an electrolysis operation to separate hydrogen from the water using the generated electricity. A hydrogen capturing element may disposed to capture the hydrogen separated from the water. A storage container may hold the hydrogen, and a conduit may be provided to transfer the hydrogen from the hydrogen capturing element to the storage container.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Inventor: Guy L. James
  • Publication number: 20150143809
    Abstract: The present invention relates to an environmentally friendly and high efficiency solid fuel production method using high-water-content organic waste, and, more specifically, relates to a solid fuel production method using high-water-content organic waste, the method comprising: (a) a waste mixing step in which high-water-content organic waste and municipal waste are introduced into a Fe-based reactor and mixed; (b) a hydrolysis step in which high temperature steam is added to the reactor and the mixture of organic waste and municipal waste is placed under pressure and is then stirred in the pressurized state so as to hydrolyse the mixture; (c) a pressure-reducing step in which the steam in the reactor is discharged and the inside of the reactor is rapidly reduced in pressure and left to stand in such a way as to give the organic waste from step (b) a low molecular weight or in such a way as to enlarge the specific surface area of the municipal waste from step (b) and thereby break apart same; (d) a vacuum or
    Type: Application
    Filed: May 15, 2013
    Publication date: May 28, 2015
    Inventors: Jae-Hyeon HA, Joji TAKASE
  • Publication number: 20150143828
    Abstract: A system for recycling heat or energy of a working medium of a heat engine for producing mechanical work is described. The system may comprise a first heat exchanger (204) for transferring heat from a working medium output from an energy extraction device (202) to a heating agent to vaporise the heating agent; a second heat exchanger (240) for transferring further heat to the vaporised heating agent; a compressor (231) coupled to the second heat exchanger (240) arranged to compress the further-heated heating agent; and a third heat exchanger (211) for transferring heat from the compressed heating agent to the working medium. A heat pump is also described.
    Type: Application
    Filed: May 17, 2013
    Publication date: May 28, 2015
    Inventor: Naji Amin ATALLA
  • Patent number: 9038390
    Abstract: Systems and methods for transferring and optionally storing and/or retrieving thermal energy are disclosed. The systems and methods generally include a heat engine and a heat pump, the heat engine including first isothermal and gradient heat exchange mechanisms, and the heat pump including second isothermal and gradient heat exchange mechanisms. The heat engine and the heat pump exchange heat with each other countercurrent across the first and second gradient heat exchange mechanisms, the first isothermal heat exchange mechanism transfers heat to an external heat sink, and the second isothermal heat exchange mechanism receives heat from an external heat source.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: May 26, 2015
    Inventor: Sten Kreuger
  • Publication number: 20150135713
    Abstract: Steam turbine system and control system therefor are provided. In one embodiment, a steam turbine system includes an auxiliary turbine in fluid communication with an IP turbine via an auxiliary turbine inlet conduit branch of an IP exhaust conduit. A heat exchanger system may remove heat from an IP exhaust steam, and may add the removed heat to water flowing through a boiler feed-water conduit to a boiler of the steam turbine system.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 21, 2015
    Applicant: General Electric Company
    Inventors: Nestor Hernandez Sanchez, Kamlesh Mundra
  • Publication number: 20150135711
    Abstract: According to one embodiment, a circulatory osmotic pressure electricity generation system configured to generate electricity by using a working medium, which includes an osmotic pressure generator, a turbine, a tank, a separating tower, a heat source and the working medium. The working medium has a critical temperature which separates a first temperature zone and a second temperature zone from each other and has a phase transition to a first phase or a second phase which occurs at the critical temperature. The osmotic pressure generator is placed under a temperature of the working medium within the first temperature zone, and comprises (i) a container, (ii) an osmosis membrane, (iii) a first inlet, (iv) a second inlet, and (v) an outlet.
    Type: Application
    Filed: August 27, 2014
    Publication date: May 21, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Kenji SANO, Toshihiro Imada
  • Patent number: 9032731
    Abstract: A method for powering a cooling unit. The method including applying electromagnetic (EM) radiation to a complex, where the complex absorbs the EM radiation to generate heat, transforming, using the heat generated by the complex, a fluid to vapor, and sending the vapor from the vessel to a turbine coupled to a generator by a shaft, where the vapor causes the turbine to rotate, which turns the shaft and causes the generator to generate the electric power, wherein the electric powers supplements the power needed to power the cooling unit.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 19, 2015
    Assignee: William Marsh Rice University
    Inventors: Nancy J. Halas, Peter Nordlander, Oara Neumann
  • Patent number: 9027348
    Abstract: A method for retrofitting a fossil-fueled power station is provided. The power station includes a multi-housing stream turbine with a carbon dioxide separation device. As per the method, a suction capability of the steam turbine is adapted for an operation of the carbon dioxide separation device to a process steam to be removed. The carbon dioxide separation device is connected via a process steam line to an intermediate superheating line. Further, an auxiliary condenser is connected to the carbon dioxide separation device. On failure or deliberate switching off of the carbon dioxide separation device surplus process steam is condensed in the auxiliary condenser.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: May 12, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Grumann, Ulrich Much, Andreas Pickard, Mike Rost
  • Publication number: 20150121870
    Abstract: Systems and processes provide for a thermal process to transform sludge (and a variety of other natural waste materials) into electricity. Dewatered sludge and other materials containing a high amount of latent energy are dried into a powdered biofuel using a drying gas produced in the system. The drying gas is recirculated and is heated by the biofuel produced in the system, waste heat (from turbines or internal combustion engines), gas (including natural gas or digester gas) and/or oil. The biofuel is combusted in a boiler system that utilizes a burner operable to burn biofuel and produce heat utilized in a series of heat exchangers that heat the recirculating drying air and steam that powers the turbines for electricity production.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Applicant: GATE 5 ENERGY PARTNERS, INC.
    Inventors: Steven DELSON, Lawrence E. DEES, JR.
  • Publication number: 20150121876
    Abstract: An exhaust heat recovery apparatus includes an exhaust heat passage through which a first heat medium holding exhaust heat flows; a second heat medium passage through which the second heat medium, of which temperature is lower than that of the first heat medium, flows; a Rankine cycle which includes a pump, an evaporator, an expander, and a condenser and causes heat exchange at the evaporator between the first heat medium flowing through the exhaust heat passage and a working fluid, so that the working fluid is evaporated, the evaporated working fluid expands at the expander, and power is generated; and an exhaust heat recovery heat exchanger which causes heat exchange between the first heat medium flowing through the exhaust heat passage and the second heat medium flowing through the second heat medium passage, so that the second heat medium is heated and exhaust heat of the first heat medium is recovered.
    Type: Application
    Filed: October 22, 2014
    Publication date: May 7, 2015
    Inventors: ATSUO OKAICHI, OSAO KIDO, TAKUMI HIKICHI, OSAMU KOSUDA
  • Publication number: 20150121875
    Abstract: A steam generator for generating a superheated fluid from a working fluid using a stream of heated gas, the steam generator comprising: a housing, which defines a gas flow path having an inlet at one, upstream end thereof into which a stream of heated gas is delivered and an outlet at the other, downstream end thereof; and a steam generation module which is disposed within the gas flow path of the housing, the steam generation module comprising a heat exchanger which receives a working fluid and is operative to raise the temperature of the working fluid to provide a saturated fluid, and a superheater which receives the saturated fluid from the heat exchanger and is operative to raise the temperature of the saturated fluid and provide a supersaturated fluid.
    Type: Application
    Filed: July 31, 2014
    Publication date: May 7, 2015
    Inventors: Michael Alan Burns, Paul Andrew Burns
  • Patent number: 9021810
    Abstract: A power plant includes a boiler, a stream turbine generator, a post combustion processing system, a feed water regeneration processing system and a heat exchanger. Heat from the heat exchanger is used to regenerate (a) a reagent that absorbs carbon dioxide from flue gas and (b) a water-lean desiccant used to increase plant operating efficiency.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: May 5, 2015
    Assignee: The University of Kentucky Research Foundation
    Inventors: Kunlei Liu, James K. Neathery
  • Patent number: 9003799
    Abstract: Heat flow from a steam seal header could be used in a stage, such as a low pressure stage, of a steam turbine. However, the dump steam temperature from the steam seal header can be too high requiring removal of excess heat, typically through attemperation, before the dump steam is provided to the low pressure stage. Attemperation poses reliability and life issues and lowers efficiency. To address such short comings, one or more heat pumps are used to transfer heat from the dump steam to the fluid entering a boiler. This allows the dump steam temperature to be within acceptable limits, and at the same time, increase the temperature of the fluid so that the steam cycle performance is enhanced. Preferably, solid-state heat pumps are used as they are reliable, silent and can be precisely controlled.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: April 14, 2015
    Assignee: General Electric Company
    Inventors: Sanyaswara Rao Ganti, Rajasekar Natarajan, Rakesh Alamsetty
  • Publication number: 20150089947
    Abstract: The present invention provides a method and apparatus of processing material having an organic content. The method comprises heating a batch of the material (“E”) in a batch processing apparatus (16) having a reduced oxygen atmosphere to gasify at least some of the organic content to produce syngas, The temperature of the syngas is then elevated and maintained at the elevated temperature in a thermal treatment: apparatus (18) for a residence time sufficient to thermally break down any long chain hydrocarbons or volatile organic compounds therein. The calorific value of the syngas produced is monitored by sensors (26) and, when the calorific value of the syngas is below a predefined threshold, the syngas having a low calorific value is diverted to a burner of a boiler (22) to produce steam to drive a steam turbine (36) to produce electricity (“H”).
    Type: Application
    Filed: April 30, 2013
    Publication date: April 2, 2015
    Applicant: Chinook End-Stage Recycling Limited
    Inventors: Rifat Al Chalabi, Ophneil Henry Perry, Ke Li
  • Publication number: 20150059341
    Abstract: A combined-type gas turbine engine system is provided which achieves high efficiency by very effectively using exhaust heat from a gas turbine engine. In a gas turbine engine system including: a compressor for compressing a first working medium; a heater for heating the compressed first working medium by an external heat source; a turbine for outputting power from the first working medium; an intermediate cooler provided at the compressor for cooling the first working medium compressed by a low-pressure compression part of the compressor and supplying the first working medium to a high-pressure compression part of the compressor; and an exhaust heat boiler using as a heating medium an exhaust gas from the turbine, a Rankine cycle engine using the intermediate cooler and the exhaust heat boiler as heat sources and a cooling medium of the intermediate cooler as a second working medium.
    Type: Application
    Filed: April 2, 2013
    Publication date: March 5, 2015
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kazuhiko Tanimura, Ryozo Tanaka, Takao Sugimoto, Hiroshi Morishita, Karsten Kusterer, Dieter Bohn, Rene Braun
  • Publication number: 20150052895
    Abstract: A heat exchanger is provided. The heat exchanger comprises an evaporator, a vapor-liquid separator, a liquid level sensor and a controller. The evaporator is used for heating a working fluid up to a vapor-liquid state, and has a working fluid inlet pipe and a working fluid outlet pipe. The vapor-liquid separator is connected to the working fluid outlet pipe for separating the working fluid into a vapor working fluid and a liquid working fluid. The liquid level sensor detects a level of the liquid working fluid inside the vapor-liquid separator and outputs a liquid level signal. The controller receives the liquid level signal and controls the vapor quality of the working fluid inside the evaporator.
    Type: Application
    Filed: November 27, 2013
    Publication date: February 26, 2015
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Sung-Wei Hsu, Chi-Ron Kuo
  • Publication number: 20150052896
    Abstract: To provide a waste heat recovery system for a vessel capable of efficiently recovering waste heat regardless of a flow volume of excess steam. Provided is a waste heat recovery system for a vessel for supplying, to a steam utilization device, steam generated by a steam generator, using waste heat from a main machine as a heat source. With respect to the waste heat recovery system, a plurality of expansion machines are connected in parallel to one another and excess steam without being supplied to the steam utilization device is supplied individually to the expansion machines by the opening/closing of gate valves arranged in the respective expansion machines respectively.
    Type: Application
    Filed: March 1, 2013
    Publication date: February 26, 2015
    Inventor: Taisuke Ono
  • Patent number: 8959915
    Abstract: A waste heat steam generator for a gas and steam turbine power plant is provided. The generator has economizer, evaporator and superheater heating surfaces which form a flow path and through which a flow medium flows. An overflow line branches off from the flow path and leads to injection valves arranged downstream at a flow side of a superheater heating surface in the flow path. The overflow line permits a brief power increase of a downstream steam turbine without resulting in an excessive loss in efficiency of the steam process. The brief power increase is permitted independently of the type of waste heat steam generator. The branch location of the overflow line is arranged upstream of an evaporator heating surface at the flow medium side and downstream of an economizer heating surface.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: February 24, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jan Brückner, Frank Thomas
  • Patent number: 8955319
    Abstract: A geothermal power generation system configured to generate power by suspending turbine engines over a pit exposing a geothermal energy source is disclosed. The geothermal power generation system may include a support structure sized to a pit and at least one turbine engine hanging below the support structure. One or more turbine engine deployment systems may be configured to move the turbine engine, i.e. raise or lower, such that a distance between the turbine engine and the geothermal energy source changes. In one embodiment, the turbine engine deployment system may be formed from a plurality of cables extending from a rotatable cable drum on the support structure and downward from a plurality of pulleys positioned along the pulley track. The support structure may also include a pulley track extending from the first base to the second base. One or more electrical transmission lines may extend from the turbine engine.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: February 17, 2015
    Inventor: Tessema Dosho Shifferaw
  • Patent number: 8955323
    Abstract: To improve the exhaust heat recovery efficiency, a compressor includes a heat exchanger for cooling a gas, coolant, water, or oil heated by the compressor during compressor operation by heat exchange with a working fluid, for circulating the working fluid of a Rankine cycle. The Rankine cycle is implemented by the heat exchanger, an expander, a condenser, and a circulating pump to circulate the working fluid through the cycle.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: February 17, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventor: Yuji Kamiya
  • Publication number: 20150033745
    Abstract: A steam turbine system uses a laser to instantaneously vaporize water in a nozzle within a turbine. This steam is then used to rotate the turbine. Thus, the turbine system does not require an external boiler. The steam turbine system may be used in either an open system, where the steam passing through the turbine is not condensed and reused, or a closed system, where the steam passing through the turbine is condensed and reused.
    Type: Application
    Filed: October 6, 2014
    Publication date: February 5, 2015
    Applicant: BASTIAN FAMILY HOLDINGS, INC.
    Inventors: William A. Bastian, II, Elizabeth Sobota
  • Publication number: 20150033744
    Abstract: A fluid machine (29A) including: a casing section (56) including a suction port (55); a housing section (54) including a discharge port (53); and scrolls (51, 52) driven by a working fluid suctioned from the suction port (55). In the fluid machine (29A), a bypass section (80), which includes a bypass passage (81) guiding the working fluid to the discharge port (53) while allowing the working fluid to bypass the scrolls (51, 52) and a valve mechanism (83) opening and closing the bypass passage (81), is supported between the casing section (56) and the housing section (54). The valve mechanism (83) is a solenoid valve which displaces a valve body in a radial direction of a rotating shaft (28), and an accommodating portion of a coil (83d) is exposed to the outside of the casing section (56) and the housing section (54).
    Type: Application
    Filed: March 13, 2013
    Publication date: February 5, 2015
    Inventors: Hirofumi Wada, Shinji Nakamura, Yuuta Tanaka
  • Publication number: 20150033743
    Abstract: A fluid machine (29A) including: a casing section (56) having a suction port (55) into which a working fluid that becomes a high pressure heated vapor flows; a housing section (54) having a discharge port (53); and a scroll section (51, 52) driven by the working fluid suctioned from the suction port (55). A bypass section (80) including: a bypass passage (81) allowing the suction port (55) to communicate with the discharge port (53); and a valve mechanism (83) opening and closing the bypass passage (81), is supported between the sections (56, 54). When the bypass passage (81) is opened, the working fluid is circulated while bypassing a driving section including the scroll section (51, 52) and a sliding section such as an anti-rotation mechanism (60). Therefore, even when the working fluid in a liquid phase flows, degradation of lubricity in the sliding section can be reduced.
    Type: Application
    Filed: March 13, 2013
    Publication date: February 5, 2015
    Inventors: Hirofumi Wada, Shinji Nakamura, Yuuta Tanaka
  • Patent number: 8943853
    Abstract: A waste heat utilization device for an air compressor includes: a discharge path of an oil free air compressor; a circulation path along which a low boiling point medium circulates; an evaporator provided on the circulation path to heat and evaporate the low boiling point medium using the potential heat of the compressed air; and a preheater provided on an upstream side of the evaporator to preheat the low boiling point medium using the potential heat of the compressed air. A scroll type expansion machine is rotated by the low boiling point medium evaporated by the evaporator and increased in pressure, and power is generated by a power generator connected to a rotary shaft of the scroll type expansion machine. The low boiling point medium discharged from the scroll type expansion machine is then cooled and condensed by a condenser.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: February 3, 2015
    Assignee: Anest Iwata Corporation
    Inventors: Tamotsu Fujioka, Atsushi Unami
  • Publication number: 20150027120
    Abstract: A device for capture of acid gas of combustion fumes of a thermal power plant, including: absorption means (10) of the gas by capture fluid, a regenerator (1) where the capture fluid and a regeneration fluid steam are put in contact, introduction means (11) of the regeneration fluid in the regenerator, condensation means (2, 3, 4), at the head of said regenerator, separation means (6) of liquid phase of the regeneration fluid and gaseous phase rich in acid gas, Wherein: the regeneration fluid steam introduced is superheated, the regenerator (1) includes means limiting the contact time to substantially maintain the flow rate of regeneration fluid steam, the condensation means (2, 3, 4) are in thermal exchange with first evaporation means of working fluid, and first reintroduction means (13) of steam obtained in a turbine (14).
    Type: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Inventor: Yann Le Moullec
  • Patent number: 8931278
    Abstract: A steam generation system delivers heats water and carbon dioxide at high temperatures in the presence of one or more plasma arc torches and converts the materials into hydrogen and carbon monoxide. The converted gas is delivered to a heat recovery steam generator (“HRSG”) to produce steam, which may be used to power a steam turbine. Depending on the amount of steam and/or power desired, the system may use a control system to vary the flow, temperature and pressure of the gas delivered to the HRSG. The control system may do this by bringing additional torches on-line or off-line in the processing chamber, by adding unheated gas directly from a supply source, shunting the gas from the HRSG, and varying the flow of water delivered to the HRSG.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: January 13, 2015
    Assignee: Powerdyne, Inc.
    Inventors: Geoffrey Hirson, Gus F. Shouse
  • Publication number: 20150007568
    Abstract: A power generation apparatus, a power generation method, a decomposition-gas boiler, and a decomposition-gas turbine with which nitrous oxide may be used as an environmentally friendly energy source. A fuel gas including nitrous oxide (N2O) is supplied to a decomposition reactor (22) in which a catalyst (21) for decomposing nitrous oxide is disposed. Steam is generated by a decomposition-gas boiler by heat recovery from decomposition gas (N2, O2) generated by decomposing the nitrous oxide, the steam generated by the decomposition-gas boiler is used to drive the rotation of a steam turbine to obtain motive power, and the motive power is subsequently used to drive a generator to obtain electrical power. Alternatively, the decomposition gas (N2, O2) generated by decomposing the nitrous oxide is used to drive the rotation of a decomposition-gas turbine to obtain motive power.
    Type: Application
    Filed: February 23, 2012
    Publication date: January 8, 2015
    Applicant: SHOWA DENKO K.K.
    Inventors: Shigehiro Chaen, Junichiro Kawaguchi, Hiroto Habu, Yoshitsugu Sone
  • Publication number: 20150007569
    Abstract: A volumetric expander (20) configured to transfer a working fluid and generate useful work includes a housing. The housing includes an inlet port (24) configured to admit relatively high-pressure working fluid and an outlet port (26) configured to discharge to a relatively low-pressure working fluid. The expander also includes first and second twisted meshed rotors (30,32) rotatably disposed in the housing and configured to exp/and the relatively high-pressure working fluid into the relatively low-pressure working fluid. Each rotor has a plurality of lobes, and when one lobe of the first rotor is leading with respect to the inlet port, one lobe of the second rotor is trailing with respect to the inlet port. The expander additionally includes an output shaft (38) rotated by the relatively high-pressure working fluid as the fluid undergoes expansion. A system for generating work using the expander in a Rankine cycle is also disclosed.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 8, 2015
    Inventor: William Nicholas Eybergen
  • Publication number: 20150000276
    Abstract: An auxiliary steam generator system for a power plant, comprising a water-steam circuit, which has a condensate line and a feed-water line, wherein a condensate pump is connected in the condensate line and a feed-water pump is connected in the feed-water line, and wherein a pressure accumulating vessel is connected between the condensate pump and the feed-water pump, and wherein a feed-water take-off line is connected to the water-steam circuit at a branch-off point after the pressure accumulating vessel is provided. The feed-water take-off line is connected to the pressure accumulating vessel and a heating device is connected in the feed-water take-off line.
    Type: Application
    Filed: December 4, 2012
    Publication date: January 1, 2015
    Inventors: Heiner Edelmann, Mark Reissig, Marc Sattelberger, Andre Schrief
  • Patent number: 8919328
    Abstract: A waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling is described. More particularly, a Rankine cycle WHR system and method is described, including an arrangement to improve the precision of EGR cooling for engine efficiency improvement and thermal management.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: December 30, 2014
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Christopher R. Nelson, Timothy C. Ernst
  • Publication number: 20140373544
    Abstract: Embodiments of systems that are configured as a closed loop system with a pump, an evaporator, a power generator, and a condenser, the combination of which circulates a working fluid to generate electrical power. The embodiments are configured with a cooling system that can depress the local pressure at or near components that are the target of cooling, which in turn permits the cooling fluid to function at temperatures that can remove heat, even when the ambient temperature rises above desirable levels. In one embodiment, the system is configured with an ejector device that can use energy of the working fluid F in vapor phase to lower the pressure in a housing, or like environment, that encloses critical elements of the generator.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 25, 2014
    Inventor: Sankar K. Mohan
  • Publication number: 20140373545
    Abstract: Embodiments of a system that configured as a closed loop system, with a pump, an evaporator, a power generator, and a condenser, the combination of which circulate a working fluid to generate electrical power. The embodiments can harvest residual energy in the working fluid to improve efficiency and to reduce power loss that can derive from the pump as well as other auxiliary loads (e.g., fans). In one embodiment, the system incorporates members that operate in response to the working fluid, often in the higher pressure vapor form that occurs after evaporation and/or power generation stages. These members can include mechanical elements, for example, that have motive action (e.g., reciprocate, rotate, etc.) that is useful to satisfy operating and power requirements of auxiliary loads. For the pressurization stage, these mechanical elements may embody a piston-and-cylinder arrangement (or other rotary or linear positive displacement arrangement) that generates motion that can drive the pump.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 25, 2014
    Inventor: Sankar K. Mohan
  • Publication number: 20140373527
    Abstract: The present invention provides a compressor powered by a pressurized gas, whether steam or another working fluid, and a system for extracting work using such as compressor. The pressurized gas may comprise a heated working fluid in a gaseous state, to displace a piston in an input circuit, which in turn displaces a piston in an output circuit, thereby compressing a compressible fluid or displacing an incompressible fluid. A purpose of the compressor is to convert waste heat, heat generated by the combustion of biomass or other fuels, or heat resulting from the concentration of solar energy into useful power, whether configured to produce compressed air or pump water, which can displace the electricity otherwise used for this purpose, or to produce electricity or motive force directly, through a hydraulic circuit. The system for extracting work does so by an output fluid which is compressed or pumped by a pressurized gas powered compressor.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 25, 2014
    Applicant: NOVOPOWER LTD.
    Inventors: Valeri STROGANOV, Philip RAPHALS
  • Publication number: 20140366537
    Abstract: In a system for effecting pressure control in a thermal power plant operated at low load connected fluidly in series, a relief conduit is disclosed herein. The relief conduit selectively transfers steam from a cold reheat conduit to the second extraction conduit. The plant further includes a boiler, a high-pressure turbine, an intermediate pressure turbine, a low pressure turbine, a main steam conduit for feeding steam from the boiler to an inlet of the high pressure turbine, a cold reheat conduit for feeding steam from an outlet of the high-pressure turbine through a reheat flow path in the boiler, and a first and second high pressure heaters. A first extraction conduit connects the cold reheat conduit to a first high pressure heater to transfer heat, and a second extraction conduit connects the intermediate pressure turbine to the second high pressure heater, to transfer heat.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 18, 2014
    Inventors: Stephan HELLWEG, Volker Schüle, Manfred BAUER
  • Publication number: 20140360204
    Abstract: The present techniques are directed to systems and a method for extracting a high pressure gas from a power plant. A method includes providing a fuel to a burner, and providing an oxidant to the burner, wherein an oxidant flow rate is adjusted to provide a substantially stoichiometric ratio of the oxidant to the fuel. The fuel and the oxidant are combusted in the burner to produce an exhaust gas. At least a portion of the exhaust gas is extracted downstream of the burner to form a product gas.
    Type: Application
    Filed: May 15, 2014
    Publication date: December 11, 2014
    Inventor: Srinivas N. Moorkanikkara
  • Publication number: 20140352308
    Abstract: 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.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Inventors: Matthew Alexander Lehar, Pierre Sebastien Huck, Christian Vogel
  • Publication number: 20140352306
    Abstract: A novel Rankine cycle system configured to convert waste heat into mechanical and/or electrical energy is provided. 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 three distinct condensed working fluid streams are employed at various stages in the waste heat recovery cycle. A first condensed working fluid stream is vaporized by an expanded first vaporized working fluid stream, a second condensed working fluid stream absorbs heat from an expanded second vaporized working fluid stream, and a third condensed working fluid stream removes heat directly from a waste heat-containing stream. The Rankine cycle system is adapted for the use of supercritical carbon dioxide as the working fluid.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Inventor: Matthew Alexander Lehar
  • Publication number: 20140352305
    Abstract: 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 and a first portion of an expanded second vaporized working fluid stream are employed to augment heat provided by an expanded first vaporized working fluid stream 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.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Applicant: General Electric Company
    Inventors: Pierre Sebastien Huck, Matthew Alexander Lehar, Christian Vogel
  • Publication number: 20140345280
    Abstract: A waste heat recovery device for a marine vessel is disclosed. According to the embodiments of the present invention, the waste heat recovery device for a marine vessel includes: a heat exchanger, which recovers heat from the exhaust fumes discharged from the engine, to heat a first refrigerant under uniform pressure; a turbine which is driven by adiabatically expanding the first refrigerant heated under uniform pressure; a condenser which condenses the adiabatically expanded first refrigerant; and a heat exchanging pump which compresses the condensed first refrigerant so as to re-circulate the compressed first refrigerant to the heat exchanger.
    Type: Application
    Filed: December 6, 2011
    Publication date: November 27, 2014
    Applicant: SAMSUNG HEAVY IND. CO., LTD
    Inventors: Moon Ho Son, Gun Il Park, Sung Jae Lee, Ho Ki Lee, Jung Kun Jin, Jae Woong Choi
  • Patent number: 8893666
    Abstract: A cogeneration power plant for producing steam and electricity. A boiler burner receives fuel from a fuel source and a boiler combustion air/exhaust mixture from a boiler combustion air fan. An internal combustion engine receives fuel and air for combustion. The internal combustion engine drives an electricity generator for the production of electricity. A boiler combustion control system automatically monitors the boiler load and the combustion air and engine exhaust mixture oxygen level and temperature. The boiler combustion control system will then appropriately automatically adjust the speed of the boiler combustion air fan to provide a near stoichiometric mixture of fuel and combustion air and engine exhaust mixture so as to provide for a high burner temperature causing the reduction of NOx emissions in the boiler exhaust while maintaining a very high boiler operating efficiency.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: November 25, 2014
    Inventor: Robert P. Benz
  • Patent number: 8887481
    Abstract: A method for starting a combined cycle power plant (1) includes loading the gas turbine unit (2), providing a starting temperature (Tstart) for the steam supplied to the steam turbine (5), while the control valve (7) is regulated controlling the temperature of the steam at a temperature substantially equal to the starting temperature (Tstart) at a position (P2) downstream of the control valve (7) and upstream of the rotor (8), when the control valve (7) is substantially fully open, supplying steam to the steam turbine (5) at the starting temperature (Tstart). The steam temperature is controlled by controlling the steam temperature upstream of the control valve (7) in accordance with the temperature drop caused by the control valve (7) when the steam passes through it.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: November 18, 2014
    Assignee: Alstom Technology Ltd
    Inventors: Andreas Ehrsam, Thomas Schreier
  • Patent number: 8881527
    Abstract: Power plant systems and methods are presented. The power plant includes a steam turbine configured to release exhaust steam. The power plant further includes an electro-hydrodynamic system operatively coupled to the steam turbine. The electro-hydrodynamic system is configured to receive the exhaust steam from the steam turbine and generate auxiliary electric power using the exhaust steam.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: November 11, 2014
    Assignee: General Electric Company
    Inventors: Charles Erklin Seeley, Dmytro Floriyovych Opaits, Sunilkumar Onkarnath Soni, Chiranjeev Kalra
  • Patent number: 8881523
    Abstract: A Rankine cycle (6) of a waste heat utilization device includes a circulation path (7) for circulating a working fluid therethrough, an evaporator (12) for causing heat to transfer from cooling water delivered from an internal combustion engine (2) to the working fluid to evaporate the working fluid, a superheater (10) for causing heat to transfer from the cooling water delivered from an exhaust gas heat exchanger (8) to the working fluid delivered from the evaporator to superheat the working fluid, an expander (22) for expanding the working fluid delivered from the superheater to produce driving force, a condenser (24) for condensing the working fluid delivered from the expander, and a pump (28) for feeding the working fluid delivered from the condenser to the evaporator. The evaporator, the superheater, the expander, the condenser and the pump are successively inserted in the working fluid circulation path.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: November 11, 2014
    Assignee: Sanden Corporation
    Inventors: Junichiro Kasuya, Tetsuya Nakano, Tomohiko Saito, Masaaki Tokuda, Satoshi Ogiwara