Patents by Inventor Israel Kroizer

Israel Kroizer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9541071
    Abstract: Steam can be generated using insolation by a solar collection system. A thermal storage system can store enthalpy in insolation-generated steam at times and can generate steam from stored enthalpy at other times. During some operating periods, a gas-fired superheater can further heat the generated steam to provide superheated steam to generate electricity. Steam at a substantially uniform electricity generating temperature may be produced selectively and at different operating periods from insolation only, from insolation and gas firing, from transfer of enthalpy from a thermal storage system and gas firing, or from a combination of insolation, stored enthalpy transfer, and gas firing. Operating periods can be characterized by at least one of an insolation level, a time of day, or a stage in the operation process. The generated steam can be used in the production of electricity.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: January 10, 2017
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventor: Israel Kroizer
  • Patent number: 9003795
    Abstract: The disclosed subject matter relates to methods and systems for operating a solar steam system in response to a detected or predicted reduced insolation condition (for example, sunset or a cloud condition). In some embodiments, for a period of time, enthalpy stored within a solid material of a conduit via which steam travels en route to a steam turbine is used to heat the steam to drive the turbine. In some embodiments, a net migration of heliostats away from the steam superheater is carried out in response to the detected or predicted reduced insolation condition.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: April 14, 2015
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Sami Katz, Israel Kroizer
  • Patent number: 8931475
    Abstract: Systems and methods for directly monitoring energy flux of a solar receiver in a solar energy-based power generation system include measuring infrared radiation emanating from the solar receiver. Such measurement can be achieved using one or more infrared thermography detectors, such as an IR camera. Resulting thermal data obtained by the imaging can be used to determine energy flux distribution on the receiver. A user or a system controller can use the determined flux distribution to adjust heliostat aiming to achieve a desired operation condition. For example, heliostats can be adjusted to achieve a uniform energy flux distribution across the external surface of the receiver and/or to maximize heat transfer to a fluid flowing through the receiver within system operating limits.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: January 13, 2015
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Yoel Gilon, Ophir Chernin, Gideon Goldwine, Gil Kroyzer, Rotem Hayut, Dan Franck, Israel Kroizer, Ziv Aumann
  • Publication number: 20140152024
    Abstract: Steam can be generated using insolation by a solar collection system. A thermal storage system can store enthalpy in insolation-generated steam at times and can generate steam from stored enthalpy at other times. During some operating periods, a gas-fired superheater can further heat the generated steam to provide superheated steam to generate electricity. Steam at a substantially uniform electricity generating temperature may be produced selectively and at different operating periods from insolation only, from insolation and gas firing, from transfer of enthalpy from a thermal storage system and gas firing, or from a combination of insolation, stored enthalpy transfer, and gas firing. Operating periods can be characterized by at least one of an insolation level, a time of day, or a stage in the operation process. The generated steam can be used in the production of electricity.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: BRIGHTSOURCE INDUSTRIES (ISRAEL) LTD.
    Inventor: Israel KROIZER
  • Publication number: 20140026566
    Abstract: Methods, apparatus and systems for operating a solar steam system in response to a detected or predicted reduced or impending reduced insolation event are disclosed herein. Examples of transient reduced insolation events include but are not limited to cloud-induced reduction in insolation, dust-induced reduction in insolation, and insolation events caused by solar eclipses. In some embodiments, in response to the detecting or predicting, steam flow is regulated within the solar steam system to reduce a flow rate into a steam turbine. Alternatively or additionally, one or more heliostats may be responsively redirected onto a steam superheater or steam re-heater.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 30, 2014
    Applicant: BrightSource Industries (ISRAEL), Ltd.
    Inventors: Sami Katz, Israel Kroizer
  • Patent number: 8627664
    Abstract: Methods, apparatus and systems for operating a solar steam system in response to a detected or predicted reduced or impending reduced insolation event are disclosed herein. Examples of transient reduced insolation events include but are not limited to cloud-induced reduction in insolation, dust-induced reduction in insolation, and insolation events caused by solar eclipses. In some embodiments, in response to the detecting or predicting, steam flow is regulated within the solar steam system to reduce a flow rate into a steam turbine. Alternatively or additionally, one or more heliostats may be responsively redirected onto a steam superheater or steam re-heater.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: January 14, 2014
    Assignee: BrightSource Industries (Israel), Ltd.
    Inventors: Sami Katz, Israel Kroizer
  • Patent number: 8544272
    Abstract: A method for generating steam for a turbine electric power plant uses solar radiation. Solar radiation is directed onto a solar receiver. The solar receiver includes a first section, which receives feedwater input and is arranged to heat the feedwater input to generate steam using the directed solar radiation. Feedwater flows through a feedwater vessel to serve as feedwater input to an inlet of the first section of the receiver. Water is separated from the steam in steam separation vessel, which is in fluid communication with an outlet of the first section of the receiver. The feedwater input may be selectively preheated by a source of preheat other than solar energy in response to system operating conditions, predicted insolation schedule, or an electrical energy tariff schedule.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: October 1, 2013
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Israel Kroizer, Gabriel Kaufmann, Leon Afremov, Yoel Gilon
  • Patent number: 8490618
    Abstract: A solar energy conversion system may include a receiver with a first heat transfer fluid channel having at least two opposite sides. Each side may present an external surface facing in a direction opposite to that of the external surface of the other opposite side. Each side may be configured to contact a heat transfer fluid carried in the first heat transfer fluid channel. A heliostat field may be configured to direct solar energy to each of the at least two opposite sides during the course of a day such that a thermal stress tending to bend the channel remains below a specified level.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: July 23, 2013
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Israel Kroizer, Gabriel Kaufmann
  • Patent number: 8365718
    Abstract: A solar energy collection system includes a primary solar receiver and a secondary solar receiver. The secondary solar receiver generates steam using energy from solar radiation incident thereon. The primary solar receiver receives the generated steam from the secondary solar receiver and superheats the steam using energy from solar radiation incident thereon. A plurality of heliostat-mounted mirrors reflects incident solar radiation onto one of the primary and secondary solar receivers. A controller aims a portion of the heliostat-mounted mirrors at the primary solar receiver such that a predetermined thermal profile is provided on a surface of the primary solar receiver.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: February 5, 2013
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Yoel Gilon, Israel Kroizer, Gil Kroyzer
  • Patent number: 8327840
    Abstract: A solar energy collection system includes a primary solar receiver and a secondary solar receiver. The secondary solar receiver generates steam using energy from solar radiation incident thereon. The primary solar receiver receives the generated steam from the secondary solar receiver and superheats the steam using energy from solar radiation incident thereon. A plurality of heliostat-mounted mirrors reflects incident solar radiation onto one of the primary and secondary solar receivers. A controller aims a portion of the heliostat-mounted mirrors at the primary solar receiver such that a predetermined thermal profile is provided on a surface of the primary solar receiver.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: December 11, 2012
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Yoel Gilon, Israel Kroizer
  • Publication number: 20120227401
    Abstract: The disclosed subject matter relates to methods and systems for operating a solar steam system in response to a detected or predicted reduced insolation condition (for example, sunset or a cloud condition). In some embodiments, for a period of time, enthalpy stored within a solid material of a conduit via which steam travels en route to a steam turbine is used to heat the steam to drive the turbine. In some embodiments, a net migration of heliostats away from the steam superheater is carried out in response to the detected or predicted reduced insolation condition.
    Type: Application
    Filed: November 23, 2010
    Publication date: September 13, 2012
    Applicant: BRIGHTSOURCE INDUSTRIES (ISRAEL) LTD.
    Inventors: Sami Katz, Israel Kroizer
  • Publication number: 20120024282
    Abstract: A solar energy collection system includes a primary solar receiver and a secondary solar receiver. The secondary solar receiver generates steam using energy from solar radiation incident thereon. The primary solar receiver receives the generated steam from the secondary solar receiver and superheats the steam using energy from solar radiation incident thereon. A plurality of heliostat-mounted mirrors reflects incident solar radiation onto one of the primary and secondary solar receivers. A controller aims a portion of the heliostat-mounted mirrors at the primary solar receiver such that a predetermined thermal profile is provided on a surface of the primary solar receiver.
    Type: Application
    Filed: July 28, 2011
    Publication date: February 2, 2012
    Applicant: BRIGHTSOURCE INDUSTRIES (ISRAEL) LTD.
    Inventors: YOEL GILON, ISRAEL KROIZER, GIL KROYZER
  • Patent number: 8063349
    Abstract: A solar heliostat and system are described with various characteristics particularly suitable for concentrating systems with a relatively large number of small heliostats. Other features contribute to high performance, low cost, high durability, and high temperature operation, such as desired for high efficiency thermal power generation.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: November 22, 2011
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Shmuel Huss, Hagai Huss, Israel Kroizer, Yoel Gilon, Danny Franck, Susan Walzer
  • Patent number: 8033110
    Abstract: A multi-mode solar power generation system can include a first energy conversion system that generates electricity from a working fluid heated by a portion of solar radiation focused by a plurality of heliostats. The multi-mode solar power generation system can also include a second energy conversion system that generates electricity from an unused portion of the focused solar radiation using a different energy conversion mode than that of the first energy conversion system. The second energy conversion system can include one or more photovoltaic converters, which directly convert solar radiation to electricity. The unused radiation from the first energy conversion system can include radiation spillage or dumped radiation from a thermal receiver of the first energy conversion system.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: October 11, 2011
    Assignee: Brightsource Industries (Israel) Ltd.
    Inventors: Yoel Gilon, Arnold J. Goldman, Israel Kroizer, Gideon Goldwine, Gil Kroyzer
  • Patent number: 8001960
    Abstract: A solar energy collection system includes a primary solar receiver and a secondary solar receiver. The secondary solar receiver generates steam using energy from solar radiation incident thereon. The primary solar receiver receives the generated steam from the secondary solar receiver and superheats the steam using energy from solar radiation incident thereon. A plurality of heliostat-mounted mirrors reflects incident solar radiation onto one of the primary and secondary solar receivers. A controller aims a portion of the heliostat-mounted mirrors at the primary solar receiver such that a predetermined thermal profile is provided on a surface of the primary solar receiver.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: August 23, 2011
    Assignee: BrightSource Industries (Israel) Ltd.
    Inventors: Yoel Gilon, Israel Kroizer, Gil Kroyzer
  • Publication number: 20110088396
    Abstract: Methods, apparatus and systems for operating a solar steam system in response to a detected or predicted reduced or impending reduced insolation event are disclosed herein. Examples of transient reduced insolation events include but are not limited to cloud-induced reduction in insolation, dust-induced reduction in insolation, and insolation events caused by solar eclipses. In some embodiments, in response to the detecting or predicting, steam flow is regulated within the solar steam system to reduce a flow rate into a steam turbine. Alternatively or additionally, one or more heliostats may be responsively redirected onto a steam superheater or steam re-heater.
    Type: Application
    Filed: October 15, 2010
    Publication date: April 21, 2011
    Applicant: BrightSource Industries (ISRAEL), Ltd.
    Inventors: SAMI KATZ, Israel Kroizer
  • Publication number: 20100282242
    Abstract: A solar energy collection system includes a primary solar receiver and a secondary solar receiver. The secondary solar receiver generates steam using energy from solar radiation incident thereon. The primary solar receiver receives the generated steam from the secondary solar receiver and superheats the steam using energy from solar radiation incident thereon. A plurality of heliostat-mounted mirrors reflects incident solar radiation onto one of the primary and secondary solar receivers. A controller aims a portion of the heliostat-mounted mirrors at the primary solar receiver such that a predetermined thermal profile is provided on a surface of the primary solar receiver.
    Type: Application
    Filed: July 22, 2010
    Publication date: November 11, 2010
    Applicant: BrightSource Industries (ISRAEL) Ltd.
    Inventors: Yoel GILON, Israel KROIZER
  • Publication number: 20100252025
    Abstract: A solar energy conversion system may include a receiver with a first heat transfer fluid channel having at least two opposite sides. Each side may present an external surface facing in a direction opposite to that of the external surface of the other opposite side. Each side may be configured to contact a heat transfer fluid carried in the first heat transfer fluid channel. A heliostat field may be configured to direct solar energy to each of the at least two opposite sides during the course of a day such that a thermal stress tending to bend the channel remains below a specified level.
    Type: Application
    Filed: July 28, 2008
    Publication date: October 7, 2010
    Inventors: Israel Kroizer, Gabriel Kaufmann
  • Publication number: 20100191378
    Abstract: A concentrating solar system has multiple receivers, in some embodiments mounted on multiple towers, on which solar energy is concentrating using heliostats. At least some heliostats are controlled such that they may direct energy onto different receivers to achieve any of various control goals, such as temperature or flux uniformity of the receiver. In preferred embodiments, the receivers or receiver portions are fluidly connected in stages such that there are high temperature targets, e.g., superheated receivers or portions, and low temperature targets, e.g. evaporating receivers or targets. By doing so, it is possible to selectively control heliostats to track for directing energy on the targets to, for example, achieve temperature uniformity of the high temperature target by selecting heliostats for that control goal under varying circumstances.
    Type: Application
    Filed: March 26, 2008
    Publication date: July 29, 2010
    Applicant: BRIGHTSOURCE INDUSTRIES (ISRAEL) LTD.
    Inventors: Yoel Gilon, Israel Kroizer, Gabriel Kaufmann
  • Publication number: 20100175738
    Abstract: A solar heliostat and system are described with various characteristics particularly suitable for concentrating systems with a relatively large number of small heliostats. Other features contribute to high performance, low cost, high durability, and high temperature operation, such as desired for high efficiency thermal power generation.
    Type: Application
    Filed: April 15, 2008
    Publication date: July 15, 2010
    Inventors: Shmuel Huss, Hagai Huss, Israel Kroizer, Yoel Gilon, Danny Franck, Susan Walzer