Methods for reducing wear on components of a heat engine system at startup
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01K-013/02
출원번호
US-0164496
(2014-01-27)
등록번호
US-9638065
(2017-05-02)
발명자
/ 주소
Vermeersch, Michael Louis
Bowan, Brett A.
Khairnar, Swapnil
출원인 / 주소
Echogen Power Systems, LLC
대리인 / 주소
Nolte & Associates, PC
인용정보
피인용 횟수 :
0인용 특허 :
242
초록▼
Provided herein are heat engine systems and methods for starting such systems and generating electricity while avoiding damage to one or more system components. A provided heat engine system maintains a working fluid (e.g., sc-CO2) within the low pressure side of a working fluid circuit in a liquid-
Provided herein are heat engine systems and methods for starting such systems and generating electricity while avoiding damage to one or more system components. A provided heat engine system maintains a working fluid (e.g., sc-CO2) within the low pressure side of a working fluid circuit in a liquid-type state, such as a supercritical state, during a startup procedure. Additionally, a bypass system is provided for routing the working fluid around one or more heat exchangers during startup to avoid overheating of system components.
대표청구항▼
1. A method for starting a heat engine, comprising: circulating a working fluid within a working fluid circuit by a pump system, wherein the working fluid circuit has a high pressure side containing the working fluid in a supercritical state and a low pressure side containing the working fluid in a
1. A method for starting a heat engine, comprising: circulating a working fluid within a working fluid circuit by a pump system, wherein the working fluid circuit has a high pressure side containing the working fluid in a supercritical state and a low pressure side containing the working fluid in a subcritical state or a supercritical state;transferring thermal energy from a heat source stream to the working fluid by at least a primary heat exchanger fluidly coupled to and in thermal communication with the high pressure side of the working fluid circuit;flowing the working fluid through a power turbine or through a power turbine bypass line circumventing the power turbine, wherein the power turbine is configured to convert the thermal energy from the working fluid to mechanical energy of the power turbine and the power turbine is coupled to a power generator configured to convert the mechanical energy into electrical energy;monitoring and maintaining a pressure of the working fluid within the low pressure side of the working fluid circuit via a process control system operatively connected to the working fluid circuit, wherein the low pressure side of the working fluid circuit contains the working fluid in the supercritical state during a startup procedure;increasing a flowrate of the working fluid or a temperature of the working fluid within the working fluid circuit and circulating the working fluid by a turbopump contained within the pump system during the startup procedure;circulating the working fluid by the turbopump during a load ramp procedure or a full load procedure subsequent to the startup procedure, such that the flowrate of the working fluid or the temperature of the working fluid sustains the turbopump during the load ramp procedure or the full load procedure; andmaintaining the pressure of the working fluid at less than a critical pressure value during the load ramp procedure or the full load procedure. 2. The method of claim 1, wherein a secondary heat exchanger or a tertiary heat exchanger is configured to heat the working fluid upstream to an inlet of a drive turbine of the turbopump during the load ramp procedure or the full load procedure. 3. The method of claim 2, further comprising decreasing the pressure of the working fluid within the low pressure side of the working fluid circuit via the process control system during the load ramp procedure or the full load procedure. 4. The method of claim 3, wherein the working fluid within the low pressure side of the working fluid circuit is in a subcritical state during the load ramp procedure or the full load procedure. 5. The method of claim 4, wherein the working fluid in the subcritical state is in a liquid state. 6. The method of claim 1, wherein the working fluid comprises carbon dioxide. 7. The method of claim 1, further comprising measuring the pressure of the working fluid within the low pressure side of the working fluid circuit upstream to an inlet on a pump portion of the turbopump. 8. The method of claim 1, further comprising measuring the pressure of the working fluid downstream from a turbine outlet on the power turbine within the low pressure side of the working fluid circuit. 9. The method of claim 1, wherein the pressure of the working fluid within the low pressure side during the startup procedure is within a range from 7.38 MPa to 10.4 MPa. 10. A method for starting a heat engine, comprising: circulating a working fluid within a working fluid circuit by a pump system, wherein the working fluid circuit has a high pressure side containing the working fluid in a supercritical state and a low pressure side containing the working fluid in a subcritical state or a supercritical state;transferring thermal energy from a heat source stream to the working fluid by at least a primary heat exchanger fluidly coupled to and in thermal communication with the high pressure side of the working fluid circuit;flowing the working fluid through a power turbine or through a power turbine bypass line circumventing the power turbine, wherein the power turbine is configured to convert the thermal energy from the working fluid to mechanical energy of the power turbine and the power turbine is coupled to a power generator configured to convert the mechanical energy into electrical energy;monitoring and maintaining a pressure of the working fluid within the low pressure side of the working fluid circuit via a process control system operatively connected to the working fluid circuit, wherein the pressure of the working fluid in the low pressure side is above a critical pressure value of the working fluid during a startup procedure;increasing a flowrate of the working fluid or a temperature of the working fluid within the working fluid circuit and circulating the working fluid by a turbopump contained within the pump system during the startup procedure;circulating the working fluid by the turbopump during a load ramp procedure or a full load procedure subsequent to the startup procedure, such that the flowrate of the working fluid or the temperature of the working fluid sustains the turbopump during the load ramp procedure or the full load procedure; andmaintaining the pressure of the working fluid at less than the critical pressure value during the load ramp procedure or the full load procedure. 11. The method of claim 10, wherein the pressure of the working fluid within the low pressure side during the startup procedure is within a range from 7.38 MPa to 10.4 MPa. 12. A method for starting a heat engine, comprising: circulating a working fluid within a working fluid circuit by a pump system, wherein the working fluid circuit has a high pressure side containing the working fluid in a supercritical state, a low pressure side containing the working fluid in a subcritical state or a supercritical state, and the pump system contains at least a turbopump;transferring thermal energy from a heat source stream to the working fluid by at least a primary heat exchanger fluidly coupled to and in thermal communication with the high pressure side of the working fluid circuit;flowing the working fluid through a power turbine or through a power turbine bypass line circumventing the power turbine, wherein the power turbine is configured to convert the thermal energy from the working fluid to mechanical energy of the power turbine and the power turbine is coupled to a power generator configured to convert the mechanical energy into electrical energy;monitoring and maintaining a pressure of the working fluid within the low pressure side of the working fluid circuit upstream to an inlet on a pump portion of the turbopump via a process control system operatively connected to the working fluid circuit, wherein the inlet on the pump portion of the turbopump and the low pressure side of the working fluid circuit contain the working fluid in the supercritical state during a startup procedure;increasing a flowrate of the working fluid or a temperature of the working fluid within the working fluid circuit and circulating the working fluid by the turbopump contained within the pump system during the startup procedure;circulating the working fluid by the turbopump during a load ramp procedure or a full load procedure subsequent to the startup procedure, such that the flowrate of the working fluid or the temperature of the working fluid sustains the turbopump during the load ramp procedure or the full load procedure; andmaintaining the pressure of the working fluid at less than a critical pressure value during the load ramp procedure or the full load procedure.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (242)
Martens Alan (Berwyn PA) Myers Gerry A. (Swarthmore PA), Adaptive temperature control system for the supply of steam to a steam turbine.
Pierson, Tom L.; Penton, John David, Advanced heat recovery and energy conversion systems for power generation and pollution emissions reduction, and methods of using same.
Griffin James G. (West Hartford CT) McHale Robert J. (Manchester CT) Dreisbach ; Jr. Raymond A. (Old Saybrook CT) Beck John P. (South Windsor CT), Balancing the heat flow between components associated with a gas turbine engine.
Kim Choon Ng SG; Jeffrey M. Gordon IL; Hui Tong Chua SG; Anutosh Chakraborty BD, Electro-adsorption chiller: a miniaturized cooling cycle with applications from microelectronics to conventional air-conditioning.
Coney, Michael Willboughby Essex; Abdallah, Hicham Salah; Richards, Roger, Engine with combustion and expansion of the combustion gases within the combustor.
O\Brien Paul R. (Roosemelt Twrs. #3 ; 500 N. Roosemelt Blvd. Falls Church VA 22044), Fluid/vacuum chamber to remove heat and heat vapor from a refrigerant fluid.
Gilli Paul V. (Obere Teichstrasse 21/i 8010 Graz ATX) Beckmann Georg (Vienna ATX), Method and apparatus for peak-load coverage and stop-gap reserve in steam power plants.
Spliethoff, Heinz, Method and apparatus for reducing the initial start-up and subsequent stabilization period losses, for increasing the usable power and for improving the controllability of a thermal power plant.
Bothien Mihajlo,DEX ; Bremer Joachim,CHX ; Greber Jurg,CHX ; Loos Markus,CHX ; Muller Ulf Christian,CHX ; Wunderwald Dirk,CHX, Method and arrangement for sealing off a separating gap, formed between a rotor and a stator, in a non-contacting manner.
Anand, Ashok Kumar; May, Patrick King Wah; Jandrisevits, Michael, Method and system for heat recovery from dirty gaseous fuel in gasification power plants.
Rigal Meir (Doar Na Avtah ILX) Karas Amir (Yavne ILX) Nathan Aba (Kiriat Ono ILX) Rifner Yechiel (Holon ILX) Amir Naday (Rehovit ILX) Bronicki Lucien Y. (Yavne ILX) Grassianni Moshe (Herzeiya ILX), Method of and apparatus for controlling the operation of a valve that regulates the flow of geothermal fluid.
Tomlinson, Leroy Omar; Jones, Charles Michael; Smith, Gordon Raymond; Steffen, Mark Joseph; Martindale, Bruce Charles; Kazanas, Marc Trent; Murphy, Paul Ronan; Ohson, Gurbaksh Singh; Shemo, Steven David; Fung, Eric YuHang, Methods and apparatus for starting up combined cycle power systems.
Hartman ; Jr. Thomas (290 Lake Sue Drive Winter Park FL 32789) Evans Ronald D. (Maitland FL) Nimmo Bruce G. (Maitland FL), Multi-use absorption/regeneration power cycle.
Terry Lynn E. (22 Suncrest Ave. Bridgeton NJ 08302) Schoeppel Roger J. (P.O. Box 971 Stillwater OK 74074), Power cycles based upon cyclical hydriding and dehydriding of a material.
Ichinose,Masaya; Futami,Motoo; Oohara,Shinya; Imaie,Kazuhiro; Matsutake,Mitsugu, Power generation apparatus using AC energization synchronous generator and method of controlling the same.
Crawford John T. (Naperville IL) Tyree ; Jr. Lewis (Oak Brook IL) Fischer Harry C. (Maggie Valley NC) Coers Don H. (Naperville IL), Power plant using CO2as a working fluid.
Schmidt Randy P. (Cedar Falls IA) Brandau Steven G. (Cedar Falls IA) Miller James A. (Cedar Falls IA) Stephenson Dwight B. (Savage MN), Pressure flow compensating control circuit.
Rojey Alexandre (Garches FRX) Cheron Jacques (Laffite FRX), Process for producing cold and/or heat by use of an absorption cycle with carbon dioxide as working fluid.
Tornquist, Gerald Eugene; Borden, Raymond Walter; Lengel, James D.; McDowall, Gregor L.; Doherty, Kieran P. J., Rotor end caps and a method of cooling a high speed generator.
Kuo Alex C. (Charleston WV) Condron James A. (Hurricane WV) Hoy Kenneth L. (St. Albans WV), Semi-continuous method and apparatus for forming a heated and pressurized mixture of fluids in a predetermined proportio.
Heiser Richard S. (Pittsburgh PA) Scott Anthony I. (Greesburg PA), System for operating a steam turbine with bumpless digital megawatt and impulse pressure control loop switching.
Briley Patrick B. (Tulsa OK), Temperature conditioning system suitable for use with a solar energy collection and storage apparatus or a low temperatu.
Binstock Morton H. (Pittsburgh PA) McCloskey Thomas H. (Palo Alto CA) Podolsky Leaman B. (Wilmington DE), Turbine high pressure bypass temperature control system and method.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.