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公开(公告)号：US11971177B2
公开(公告)日：2024-04-30
申请号：US16958154
申请日：2018-12-20
Applicant: EMG Energimontagegruppen AB
Inventor： Per Rosén , Jacob Skogström , Fredrik Rosenqvist
IPC: F24D10/00 , G05D23/19 , F24F110/10
CPC classification number: F24D10/003 , F24D2200/12 , F24F2110/10 , F24F2221/54 , G05D23/1934
Abstract: A method for controlling a local distribution system's outtake of heat or cold from a thermal energy distribution grid. The method includes determining a base steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid, receiving a control signal indicative of reducing the steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid; determining a reduced steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid based on the control signal and the base steering temperature; determining a return temperature of a heat transfer fluid in the return, and upon the determined reduced steering temperature being lower than the return temperature, determining a temporary steering temperature higher than the return temperature and lower than the base steering temperature; and controlling the local distribution system's heat outtake based on the temporary steering temperature.
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公开(公告)号：US11815271B2
公开(公告)日：2023-11-14
申请号：US17258235
申请日：2019-07-04
Applicant: Basic Holdings
Inventor： Martin Betz
CPC classification number: F24D11/0207 , F24D3/18 , F24D5/12 , F24D10/003 , F24D19/1072
Abstract: A distributed heating and cooling network is described. In one aspect a distributed heating and cooling network used in a district heating architecture is described.
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公开(公告)号：US11629863B2
公开(公告)日：2023-04-18
申请号：US16608202
申请日：2018-04-26
Applicant: E.ON Sverige AB
Inventor： Per Rosén , Fredrik Rosenqvist
IPC: F24D10/00 , F01K9/00 , F24D19/10 , F24D18/00 , F24T10/20 , F24D103/13 , F24D101/10
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.
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公开(公告)号：US20230039702A1
公开(公告)日：2023-02-09
申请号：US17791808
申请日：2021-01-08
Applicant: ExerGo SA
Inventor： Daniel Favrat , Alberto Mian
Abstract: The invention concerns a district energy system comprising: - at least one cogeneration or heat pump unit, - a first pipe system for district heating and/or cooling consisting of at least one liquid or vapor CO2 pipe; characterized by the fact that is also comprises a second pipe system consisting of at least one fluid line for the transport of CO2 or O2. The invention also relates to the use of a district energy system comprising: - at least one cogeneration or heat pump unit, - a first pipe system, - a second pipe system; characterized by the fact that that liquid or vapor CO2 is used in the first pipe system for district heating and/or cooling and that a fluid of CO2 or O2 is used in the second pipe system.
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公开(公告)号：US20220349589A1
公开(公告)日：2022-11-03
申请号：US17310652
申请日：2020-02-20
Applicant: E.ON SVERIGE AB
Inventor： Per Rosén , Jacob Skogström , Fredrik Rosenqvist , Bengt Lindoff
Abstract: A method for identifying a deviation in a thermal energy circuit is presented. The method comprising: receiving (302) a first hot fluid flow measurement (f1) from a first hot fluid flow sensor (208) arranged in a hot fluid conduit (102); receiving (304) a first cold fluid flow measurement (r1) from a first cold fluid flow sensor (204) arranged in a cold fluid conduit (104); receiving (306) a second hot fluid flow measurement (f2) from a second hot fluid flow sensor (210) arranged in the hot fluid conduit (102) upstream the first hot fluid flow meter (208); receiving (308) a second cold fluid flow measurement (r2) from a second cold fluid flow sensor (206) arranged in the cold fluid conduit (104) downstream the first cold fluid flow sensor (204); receiving (310) a thermal device flow measurement (g) from a thermal device flow sensor (202) configured to measure a thermal device flow of a thermal device (106a) connected to the hot fluid conduit (102) downstream the first hot fluid flow sensor (208) and upstream the second hot fluid flow sensor (210), and to the cold fluid conduit (104) upstream the first cold fluid flow sensor (204) and downstream the second cold fluid flow sensor (206). The method further comprising upon (312) the first hot fluid flow measurement (f1) is different from the second hot fluid flow measurement (f2) and the thermal device flow measurement (g) in combination, generating (314) a first deviation signal indicating a deviation in the hot fluid conduit (102), or upon (316) the first cold fluid flow measurement (r1) is different from the second cold fluid flow measurement (r2) and the thermal device flow measurement (g) in combination, generating (318) a second deviation signal indicating a deviation in the cold fluid conduit (104).
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Patent Agency Ranking
公开(公告)号：US11371720B2
公开(公告)日：2022-06-28
申请号：US16423765
申请日：2019-05-28
Applicant: Erda Master IPCO Limited
Inventor： Dmitriy Zaynulin , Michael Ardis , Kevin Stickney , Gregory Davis , Alban Leiper , John Hayes
Abstract: A thermal energy network interconnecting a plurality of thermal loads and methods of providing thermal energy therebetween, the network and methods including: a primary circuit loop for working fluid, at least two thermal loads thermally connected to the primary circuit loop, at least one of the thermal loads being capable of taking heat from the primary circuit loop and at least one of the thermal loads being capable of rejecting heat into the primary circuit loop, an energy centre connected to the loop and capable of acting as a heat source or a heat sink, and a control system adapted to provide to the primary circuit loop a positive or negative thermal input from the energy centre as a balancing thermal input to compensate for net thermal energy lost to or gained from the at least two thermal loads by the primary circuit loop.
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公开(公告)号：US11118790B2
公开(公告)日：2021-09-14
申请号：US16064908
申请日：2016-12-15
Applicant: E.ON Sverige AB
Inventor： Per Rosén
Abstract: The present invention relates to a thermal server plant (40) arranged to be connected to a thermal energy circuit (10) comprising a hot conduit (12) configured to allow heat transfer liquid of a first temperature to flow therethrough, and a cold conduit (14) configured to allow heat transfer liquid of a second temperature to flow therethrough. The thermal server plant comprises a balancing device (41) arranged to be connected to the hot conduit and to the cold conduit for selectively allowing heat transfer liquid to flow from the hot conduit, via a regulator (42) and a heat exchanger (44), into the cold conduit or allowing heat transfer liquid to flow from the cold conduit, via the regulator and the heat exchanger, into the hot conduit. The flow direction is determined by a pressure difference between the hot and cold conduits. The heat exchanger is configured to alter the temperature of the heat transfer liquid flowing through the balancing device by selectively cool heat transfer liquid from the hot conduit or heat transfer liquid from the cold conduit.
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公开(公告)号：US11060738B2
公开(公告)日：2021-07-13
申请号：US16314445
申请日：2017-06-29
Applicant: E.ON Sverige AB
Inventor： Per Rosén
Abstract: The invention refers to a heating system (100) comprising a district cooling grid (1) and a local heating system (200) configured to heat a building and/or to heat tap water for the building. The heating system has a feed conduit (5) for an incoming flow of cooling fluid having a first temperature, and a return conduit (8) for a return flow of cooling fluid having a second temperature, the second temperature being higher than the first temperature. The local heating system (200) comprises a heat pump (10) having an inlet (10a) connected to the return conduit (8) of the district cooling grid (1) and an outlet (10b) connected to the feed conduit (5) of the district cooling grid (1).
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公开(公告)号：US11047582B2
公开(公告)日：2021-06-29
申请号：US16099293
申请日：2017-05-17
Applicant: BELIMO HOLDING AG
Inventor： Stefan Mischler , Ronald Aeberhard , Forest Reider , Marc Thuillard
Abstract: A fluid transportation network (1) comprises a plurality of parallel zones (Z1, Z2), fed by a common supply line (L), with a regulating zone valve (V1, V2) in each zone (Z1, Z2) for regulating a flow of fluid (ϕ1, ϕ2) through the respective zone (Z1, Z2). A processing unit (RE) receives valve positions (pos1, pos2) of the regulating zone valves (V1, V2) and determines and sets an adjusted valve position for a line valve (VE) arranged in the supply line (L), depending on the valve positions (pos1, pos2) of the regulating zone valves (V1, V2). A processing unit (RE) further receives a measurement of a total flow of fluid (ϕtot) through the supply line (L) and determines and sets adjusted valve positions for the regulating zone valves (V1, V2), depending on the measurement of the total flow of fluid (ϕtot) through the supply line (L).
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公开(公告)号：US20210123608A1
公开(公告)日：2021-04-29
申请号：US16663954
申请日：2019-10-25
Applicant: M.E.D. Energy Inc.
Inventor： Francois Ignace Geinoz , Marcel Cueni , Kameran Yakob
Abstract: The invention provides a system for energy distribution that uses liquid carbon dioxide as a working fluid. Evaporation of the carbon dioxide provides cooling, and compression of the carbon dioxide gas back to the liquid state provides heat. The amount of heat transferred at both stages is sufficient to provide environmental heating and cooling. Waste thermal energy from a power plant, in the form of hot water, is fed into the system and used to drive the overall process. An underground thermal energy storage system is used to store energy flowing into the system that is in excess of the current demand.
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