Patents by Inventor Fredrik Rosenqvist

Fredrik Rosenqvist 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).

  • Publication number: 20210381715
    Abstract: The present invention relates to a method for controlling setting of reversible heat pump assemblies (100) of a district thermal energy distribution system (1) in either a heating mode or a cooling mode.
    Type: Application
    Filed: December 3, 2019
    Publication date: December 9, 2021
    Inventors: Per Rosén, Jacob Skogström, Fredrik Rosenqvist, Bengt Lindoff
  • Publication number: 20210293417
    Abstract: A local energy distributing system includes a local feed conduit; a local return conduit; a central heat exchanger connected to a heating grid having a feed conduit for an incoming flow of heat transfer fluid having a first temperature in the range of 50-120° C., and a return conduit for a return flow of heat transfer fluid having a second temperature, the second temperature being lower than the first temperature, wherein the central heat exchanger is configured to exchange heat from the incoming flow of heat transfer fluid to an outgoing flow of local heat transfer fluid in the local feed conduit. The system also includes a plurality of local heating systems, each having an inlet connected to the local feed conduit and an outlet connected to the local return conduit, wherein each local heating system is configured to provide hot water and/or comfort heating to a building.
    Type: Application
    Filed: September 14, 2017
    Publication date: September 23, 2021
    Applicant: E.ON Sverige AB
    Inventor: Fredrik Rosenqvist
  • Publication number: 20210270491
    Abstract: A controller configured to selectively set a reversible heat pump assembly (100) in either a heating mode or in a cooling mode is presented. The controller comprising a control circuit (44) configured to: for a time period, determine, using a demand determining function (50), a heating demand for heat from one or more local heating circuits (140) connected to the reversible heat pump assembly (100) and a cooling demand for cold from one or more local cooling circuits (140) connected to the reversible heat pump assembly (100); generate, using a control function (52), a control signal indicative of if the reversible heat pump assembly (100) is to be set in either the heating mode or in the cooling mode, wherein the control function is configured to use the heating demand and the cooling demand as input data; and send, using a transmission function (54), the control signal to a heat pump (110) of the reversible heat pump assembly (100).
    Type: Application
    Filed: June 19, 2019
    Publication date: September 2, 2021
    Inventors: Per Rosén, Jacob Skogström, Fredrik Rosenqvist, Bengt Lindoff
  • Publication number: 20210088227
    Abstract: A district energy distributing system is disclosed. The system comprises a geothermal heat source system comprising a geothermal heat source and a feed conduit for a flow of geothermally heated water from the geothermal heat source. The system further comprises a district feed conduit, a district return conduit and a plurality of local heating systems, each having an inlet connected to the district feed conduit and an outlet connected to the district return conduit, wherein each local heating system is configured to provide hot water and/or comfort heating to a building, A central heat exchanger is connected to the feed conduit of the geothermal heat source system such that an incoming flow of geothermally heated water is provided to the central heat exchanger.
    Type: Application
    Filed: April 26, 2018
    Publication date: March 25, 2021
    Applicant: E.ON Sverige AB
    Inventors: Per ROSÉN, Fredrik ROSENQVIST
  • Publication number: 20200363072
    Abstract: A method for controlling a local distribution system's outtake of heat or cold from a thermal energy distribution grid.
    Type: Application
    Filed: December 20, 2018
    Publication date: November 19, 2020
    Applicant: Brunnshög Energi AB
    Inventors: Per ROSÉN, Jacob SKOGSTRÖM, Fredrik ROSENQVIST
  • Publication number: 20200363074
    Abstract: The disclosure relates to a method for controlling a thermal distribution system. The method comprises producing heat at a production plant, and determining a capacity limit of the production plant. At a central server, the current and/or forecasted production of heat in the production plant in relation to the capacity limit of the production plant is evaluated. The method further comprises to in response to the current or forecasted production at the production plant approaching the capacity limit, output from the central server a respective control signal to one or more of a plurality of local control units, and receiving the control signal at the respective local control unit. The method further comprises to in response to receiving the control signal at the respective local control unit, reduce an associated local distribution system's outtake of heat or cold from a distribution grid connected to the production plant.
    Type: Application
    Filed: December 20, 2018
    Publication date: November 19, 2020
    Applicant: Brunnshög Energi AB
    Inventors: Per ROSÉN, Jacob SKOGSTRÖM, Fredrik ROSENQVIST
  • Publication number: 20200096205
    Abstract: A district energy distributing system comprising a geothermal power plant comprising a first and a second circuit. The first circuit comprises a feed conduit for an incoming flow of geothermally heated water from a geothermal heat source; a boiler comprising a heat exchanger configured to exchange heat from the incoming flow of geothermally heated water to superheat a working medium of a second circuit of the geothermal power plant; and a return conduit for a return flow of cooled water from the boiler to the geothermal heat source. The second circuit comprises the boiler configured to superheat the working medium of the second circuit; an expander configured to allow the superheated working medium to expand and to transform the expansion to mechanical work; and a condenser configured to transform the expanded working medium to liquid phase and to heat a heat transfer fluid of a district thermal energy circuit.
    Type: Application
    Filed: April 26, 2018
    Publication date: March 26, 2020
    Applicant: E.ON Sverige AB
    Inventors: Per ROSÉN, Fredrik ROSENQVIST
  • Patent number: 9792701
    Abstract: The present invention relates to a system (200) and method for determining a relation between a first scene and a second scene. The method comprises the steps of generating at least one sensor image of a first scene with at least one sensor; accessing information related to at least one second scene, said second scene encompassing said first scene, and matching the sensor image with the second scene to map the sensor image onto the second scene. The step of accessing information related to the at least one second scene comprises accessing a 3D map comprising geocoded 3D coordinate data. The mapping involves associating geocoding information to a plurality of positions in the sensor image based on the coordinate data of the second scene.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: October 17, 2017
    Assignee: SAAB AB
    Inventors: Michael Olofsson, Folke Isaksson, Magnus Brege, Ingmar Andersson, Per Carlbom, Johan Borg, Leif Haglund, Fredrik Rosenqvist
  • Publication number: 20150078652
    Abstract: The present invention relates to a system (200) and method for determining a relation between a first scene and a second scene. The method comprises the steps of generating at least one sensor image of a first scene with at least one sensor; accessing information related to at least one second scene, said second scene encompassing said first scene, and matching the sensor image with the second scene to map the sensor image onto the second scene. The step of accessing information related to the at least one second scene comprises accessing a 3D map comprising geocoded 3D coordinate data. The mapping involves associating geocoding information to a plurality of positions in the sensor image based on the coordinate data of the second scene.
    Type: Application
    Filed: November 8, 2011
    Publication date: March 19, 2015
    Applicant: SAAB AB
    Inventors: Michael Olofsson, Folke Isaksson, Magnus Brege, Ingmar Andersson, Per Carlbom, Johan Borg, Leif Haglund, Fredrik Rosenqvist