• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An energy storage arrangement comprising a heat storage mass (4) and a heat transfer duct (3), the arrangement further comprising a heating member (11) arranged to heat the heat storage mass (4). The arrangement comprises a combustion boiler belonging to a decommissioned combustion power plant, which has been converted into a thermal energy storage (2) by at least partially filling the combustion boiler with heat storage mass (4).
    公开号:FI20195158A1
    申请号:FI20195158
    申请日:2019-03-05
    公开日:2020-08-31
    发明作者:Antti Porkka；Petri Vuori
    申请人:Calefa Oy；
    IPC主号:
    专利说明:

    ARRANGEMENT FOR ENERGY STORAGE
    FIELD OF THE INVENTION The invention relates to an arrangement for storing energy as set out in the preamble of claim 1. In the following, the arrangement according to the invention will also be referred to in this application as the solution according to the invention. The solution utilizes a decommissioned or otherwise unnecessary combustion plant or a similar boiler and infrastructure and network connection.
    BACKGROUND OF THE INVENTION AND PROBLEMS OF THE PRIOR ART Our current way of life and standard of living has been made possible by the cheap price and availability of energy, but the problem of energy solutions is always the varying degrees of exploitation and pollution of nature. Drilling for oil at sea has increased as new deposits have had to be sought as the former run out. Oil produced by drilling from the seabed is expensive and there is also a high risk of environmental disaster in the process. The disadvantages of fossil energy sources include their limited availability, environmental destruction and air pollution. > For these reasons, it is natural to seek new, less polluting and renewable solutions for energy production. 0 Such less polluting and renewable solutions are known for z 25 wind power and solar power, for example. However, these both have the problem that they are dependent on weather conditions and their energy production can vary widely. Electricity generated by wind turbines has become competitive with other electricity generation methods through the introduction of new large wind turbines. It is therefore assumed
    The share of wind power is growing in many countries, which in turn creates a need for control power. Coal is mined from large mines that have a detrimental effect on the environment. Coal burning produces significant CO2 emissions, which have been found to be a major contributor to climate change. For these reasons, large quantities of coal-fired power plants are being closed in many countries. Coal-fired power plants and combustion boiler power plants are generally associated with significant infrastructure, the utilization of which by means of the present invention can be economically viable even after the closure of the power plant. The production of wind power varies greatly and therefore its price also varies greatly, which is partly due to the fact that there are still few usable electricity reserves in use. As electricity production increasingly shifts to renewable solar, wave and wind power, the price of electricity can be expected to fluctuate even more. With the solution according to the invention, it is possible to store electrical energy in the form of thermal energy when the electricity production exceeds the electricity consumption and to discharge the stored electricity when more electricity is consumed. The introduction of the solutions according to the invention has a balancing effect on the prices of electricity, since surplus production can be recovered more efficiently and used during periods of high demand.
    O <Q wn O
    I Jami a 00 O LO O O OF
    OBJECT OF THE INVENTION The object of the present invention is to provide an arrangement by which the difference between electricity consumption and electricity production can be equalized. By means of the invention, energy can be stored during low consumption and discharged as electricity during high consumption. In the solution according to the present invention, the purpose of the power plant comprising a coal-fired power plant or some other combustion boiler is changed from an energy-producing power plant, a thermal energy storage power plant, to a control power plant. The arrangement according to the invention is characterized by what is set forth in the characterizing part of claim 1. Other embodiments of the invention are characterized by what is set out in the other claims.
    BRIEF DESCRIPTION OF THE INVENTION In the arrangement according to the invention, energy is stored and released from the TES Thermal Energy Storage of a decommissioned power plant boiler, utilizing the power plant's existing boiler and infrastructure, including, but not limited to, power generation equipment and heating equipment. - 3 with 25 generators. The decommissioned combustion boiler is converted into a thermal energy store S by filling it with a material E suitable for the need and storing sufficient energy in the form of heat. O OF
    ADVANTAGES OF THE INVENTION The advantage of the solution according to the invention is that it is inexpensive, simple and in which the combustion boiler of a decommissioned power plant can be quickly converted and recycled into energy storage (TES) and the power plant into a control power plant. The invention makes it possible to utilize the infrastructure of a decommissioned power plant, and it is not necessary to dismantle the power plant or its infrastructure after its decommissioning. Another advantage is that in the solution according to the invention recycled concrete or the like can be used as a boiler filling material for heat storage. In this solution according to the invention the existing heat transfer duct is used as appropriate and necessary, so a new heat transfer duct does not have to be built. for energy storage. The filling material supports and seals the heat transfer ductwork of the boiler, which may already be at the end of its service life, which gives it more service life. It is also an advantage that the heat-storing mass of the energy storage can be reserved when there is an oversupply in electricity production by heating the mass-heating medium with electricity. It is also an advantage that electrical energy for heating the storage mass can be produced from renewable energy sources, such as, for example, wind power, solar or wave energy, or also D hydropower. Rx 3
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in detail by means of two application examples with reference to the accompanying drawings, in which> Fig. 1 schematically shows one operating mode of the arrangement according to the invention when charging thermal energy, Fig. 2 schematically shows another arrangement according to the invention. operating mode when the thermal energy storage is charged, Fig. 3 schematically shows a third operating mode when the thermal energy storage is discharged and Fig. 4 schematically shows another alternative embodiment of the arrangement according to the invention.
    DETAILED DESCRIPTION OF THE INVENTION Figure 1 shows schematically and in a simplified form one operating mode of an arrangement according to the invention in a control power plant 1 formed from a decommissioned combustion power plant, such as a coal-fired power plant. The control power plant 1 according to the arrangement comprises a heat energy storage 2, a heat transfer duct 3, which is preferably, for example, a closed circuit piping, a heat energy storage mass 4, a supply pump 10 and a heating element 11, such as an electric heater. The thermal energy storage o 2 is a combustion boiler of a decommissioned combustion power plant, which is at least partially filled, preferably with 1 & - g hes completely with a thermal energy storage mass 4, which is 2, for example recycled concrete. Preferably, the charging mass 4 is placed at least on the heat transfer surfaces of the decommissioned combustion boiler.
    D In the situation according to Fig. 1], the thermal energy storage 2 is charged by means of a medium with electrical energy obtained from a renewable energy energy source 9. In this application example,
    source 9 is a wind turbine.
    In this application example, the energy source 9, i.e. the wind power plant, is connected to the control power plant 1 via the grid connection 7.
    At this stage of the charging of the thermal energy storage 2, the supply pump 10 is arranged to supply the heating element 11 with a medium which in this application example is water.
    The heating element 11 is arranged to heat the medium and the heated medium is arranged to be led partly to the heat transfer duct 3 inside the heat energy storage 2 to heat the mass 4 inside the heat energy storage 2. The power of the heating element 11 is arranged to be adjustable.
    Reservation this step, water evaporates in the heating element 11 and the influence of steam moves along the lämmönsiirtokanavistoa three thermal energy storage 2 in the direction of arrow A.
    The steam transfers heat energy via the heat transfer surfaces of the heat transfer duct 3 to the heat storage mass 4, whereby the mass 4 heats up and the temperature of the steam drops and condenses back into water.
    The condensed water is then arranged to be pumped again to the heating element 11 by means of a feed pump 10.
    The process described above is repeated until the mass 4 is so hot that the difference in temperature between the mass 4 and the steam is not sufficient to cause a phase change in the steam, whereby the steam no longer condenses into water.
    At this point, the booking process proceeds to the next step. 3 S Figure 2 shows the next step in the charging of the thermal energy storage 2.
    The thermal energy storage 2 is further charged by means of a medium with electrical energy from the renewable energy source 9.
    In addition to the components shown in Fig. 2 1, the control power plant 1 comprises a turbine 5 and an electric device s 6, which in the case shown in Fig. 2 acts as an electric motor.
    At this stage of the charging of the thermal energy storage 2, the turbine 5 is arranged to supply to the heating element 11 a medium which is steam at this stage. The heating member 11 is arranged to heat the medium and the heated medium is arranged to be led partly to the heat transfer duct 3 inside the thermal energy storage 2 to heat the mass 4 inside the thermal energy storage 2.
    Reservation at this stage 11 is arranged to suppress the hot steam heating means, which is arranged to move the heat transfer tokanavistoa 3 to a thermal energy storage 2 of arrow A direction basis. The steam transfers heat energy to the mass 4 via the heat transfer surfaces of the heat transfer duct 3, whereby the mass 4 heats up and the temperature of the steam decreases. Thereafter, the steam is arranged to be controlled again on the heating element 11 by means of a turbine 5 rotated by an electric device 6 acting as an electric motor. The process described above is repeated until the capacity of the system is reached. This means, for example, that the temperature of the steam no longer heats the mass 4 to be charged.
    Figure 3 shows the dismantling step of the thermal energy storage 2. The thermal energy storage 2 is discharged by means of a medium to produce> 25 electricity in the electrical network 8. In addition to the components shown in Figures 1 and 2, the control power plant 1 comprises a feed pump 14 and an electrical device 6 acting as an electric generator. The feed pump 14 is arranged to supply medium partially to the heat storage tank 2. - = 30 to 3 in the direction of arrows A. In this application example, the medium is water. The energy stored in the mass 4 heats and N evaporates the water, which releases the energy from the mass 4 in the turbine 5 in the form of a rotational motion. The electric generator connected to the shaft of the turbine 5 is arranged to convert the rotational movement into electricity and to supply the electricity produced via the network connection 7 to the electricity network 8. The heat transfer duct 3, turbine 5 and electricity generator are part of the decommissioned combustion plant infrastructure. Figure 4 shows another embodiment of the arrangement according to the invention. In this embodiment, the heating element 11 is arranged at least partially inside the heat-storing mass 4 and the heating element 11 is at least partially in contact with the heat transfer duct 3. In this case, the mass 4 is arranged to be charged directly without medium by means of thermal resistors 11.
    The thermal energy of the pulp 4 is arranged to be discharged at a desired time by means of a medium, a turbine 5 and an electric generator into electrical energy in the electrical network 8. The disassembly is arranged to be performed in substantially the same way as shown in the description section of Fig. It will be apparent to those skilled in the art that the invention is not limited to the examples set forth above, but may vary within the scope of the claims set forth below. Thus> 25, for example, some structural solutions may be different g than shown above, and the charging mass may be more than 2 substances other than concrete. Preferably, it can be any material with good heat storage capacity that is easy to place, either by casting or otherwise, on the boiler and its heat transfer surfaces.
    N It will also be apparent to one skilled in the art that the arrangement may include elements other than those set forth above, such as
    a condenser arranged in the thermal energy dissipation step to cool the medium, if necessary. In addition, the arrangement may comprise, for example, means for adjusting the medium if necessary.
    It is also clear to a person skilled in the art that the electric motor and the electric generator running the turbine can be one and the same electrical device or, alternatively, they can be separate devices.
    It is also clear to a person skilled in the art that the thermal energy storage can be stored with electricity from an energy source other than a wind power plant, for example solar or wave energy, or also with hydropower.
    It is also clear to a person skilled in the art that the medium heated by the thermal energy storage can be arranged to be fed to a district heating network, where the medium is arranged to transfer its energy to, for example, heating buildings and / or steam heated by the thermal energy storage. o O
    N n <Q To) o
    I and m o 00 LO
    LO o o OF
    权利要求:
    Claims (15)
    [1]
    An arrangement for storing energy, which arrangement comprises a heat storage mass (4) and a heat transfer duct (3), and which further comprises a heating element (11) arranged to heat the heat storage mass (4), characterized in that the arrangement comprises a combustion boiler belonging to a decommissioned combustion power plant, which has been converted into a thermal energy storage (2) by at least partially filling the combustion boiler with heat storage mass (4).
    [2]
    Arrangement according to Claim 1, characterized in that the storage mass 4 is made of concrete, preferably recycled concrete, and in that the storage mass 4 is arranged at least on the heat transfer surfaces of the decommissioned combustion boiler.
    [3]
    Arrangement according to Claim 1 or 2, characterized in that part of the heat transfer duct (3) is located inside the heat-storing mass (4).
    [4]
    Arrangement according to Claim 1, 2 or 3, characterized in that the arrangement comprises a heating element (11) for heating the heat-storing mass (4). o> 25
    [5]
    Arrangement according to Claim 4, characterized in that the heating element (11) is connected to the heat transfer duct 2 (3) for transferring heat to the storage mass (4) by means of a medium =. a
    O D 30
    [6]
    Arrangement according to Claim 4, characterized in that the heating element (11) is arranged at least partially inside the heat-storing mass (4).
    [7]
    Arrangement according to one of the preceding claims, characterized in that the heat-storing mass (4) is arranged to be heated by means of electrical energy.
    [8]
    Arrangement according to Claim 7, characterized in that the electrical energy used to heat the storage mass (4) is preferably electricity produced by means of renewable energy.
    [9]
    Arrangement according to one of the preceding claims, characterized in that the thermal energy contained in the thermal energy storage (2) is arranged to be discharged into the heat transfer duct (3) by means of a recyclable medium and to be transferred as energy for use elsewhere.
    [10]
    Arrangement according to one of the preceding claims, characterized in that the thermal energy storage (2) is arranged to act as an energy source when the medium is heated by means of a heat-storing mass (4) inside the thermal energy storage (2).
    [11]
    Arrangement according to one of the preceding claims, characterized in that the arrangement comprises a turbine (5), and that the medium> 25 heated by the thermal energy storage (2) is arranged to be fed to the turbine (5), where the energy of the medium g is arranged to change. -energy.
    S E
    [12]
    Arrangement according to one of the preceding claims, characterized in that the arrangement comprises an electrical device (6) acting as an electric generator connected to the turbine 2 (5), and that the kinetic energy produced by the turbine (5) is arranged - designed to be modified by means of said electric generator
    as energy, which is preferably transferable via the network interface (7) to the electrical network (8).
    [13]
    Arrangement according to one of the preceding claims, characterized in that the heat transfer duct (3), the turbine (5) and the electric generator are part of the infrastructure of the decommissioned combustion plant.
    [14]
    Arrangement according to one of the preceding claims, characterized in that the medium heated by the thermal energy storage (2) is arranged to be fed to a district heating network, in which the medium is arranged to transfer its energy for heating buildings.
    [15]
    Arrangement according to one of the preceding claims, characterized in that the steam heated by means of the thermal energy storage (2) is arranged to be fed for process operation.
    o
    O
    OF
    O <Q
    LO
    O
    I Jami a 00
    O
    LO
    O
    O
    OF
    类似技术:
    公开号 | 公开日 | 专利标题
    US9541070B2|2017-01-10|Plant for energy production
    AU2007315397B2|2011-06-30|Heating system, wind turbine or wind park, method for utilizing surplus heat of one or more wind turbine components and use hereof
    US20110016864A1|2011-01-27|Energy storage system
    US8695342B2|2014-04-15|Heating system for a turbine
    JP6298072B2|2018-03-20|Centralized thermodynamic solar power plant or conventional thermal power plant
    US20180209305A1|2018-07-26|Integrated System for Using Thermal Energy Conversion
    KR20150082431A|2015-07-15|Thermal energy storage system comprising a combined heating and cooling machine and a method for using the thermal energy storage system
    CN104420906A|2015-03-18|Steam turbine equipment
    KR100728939B1|2007-06-15|Annexation power generation apparatus using wind power and small hydro power
    US10247167B2|2019-04-02|Independent power generating method using water pressure and vapor, and generating device thereof
    EP3002423A1|2016-04-06|Combined cycle power plant with a thermal storage unit and method for generating electricity by using the combined cycle power plant
    EP3172413B1|2022-02-09|Power plant with steam cycle and with a high temperature thermal energy exchange system and method for manufacturing the power plant
    FI20195158A1|2020-08-31|Arrangement for energy storage
    JP2011169171A|2011-09-01|Power generation system
    CN204268448U|2015-04-15|Fuse salt energy storage is utilized to carry out the device of thermal power station&#39;s transformation
    JP2007064535A|2007-03-15|Method of supplying heat using wind-to-heat conversion and heat storage system
    RU2656515C1|2018-06-05|Vortex wind thermal generator
    WO2020008241A1|2020-01-09|Methods and devices to optimize power production and consumption
    KR101488656B1|2015-02-04|Power generation system for waste heat recovery
    Steinmann et al.2005|Solarthermal parabolic trough power plants with integrated storage capacity
    JP2014122576A|2014-07-03|Solar heat utilization system
    Sánchez et al.2015|Analysis of thermal energy storage solutions for a 1 MW CSP-ORC power plant
    Niraimathi et al.2021|Present Power Scenario in India
    RU91117U1|2010-01-27|DEVICE FOR INDEPENDENT ELECTRICAL AND HEAT SUPPLY OF PREMISES
    EP3130875B1|2018-10-17|System for storage of electrical energy
    同族专利:
    公开号 | 公开日
    EP3935336A1|2022-01-12|
    WO2020178479A1|2020-09-10|
    FI128601B|2020-08-31|
    CN113518890A|2021-10-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US8544275B2|2006-08-01|2013-10-01|Research Foundation Of The City University Of New York|Apparatus and method for storing heat energy|
    EP2561299B1|2010-07-12|2017-05-31|Siemens Aktiengesellschaft|Storage and recovery of thermal energy based on counter current principle of heat transfer medium transportation|
    US10323543B2|2014-07-28|2019-06-18|Third Power, LLC|Conversion of power plants to energy storage resources|
    EP3078817A1|2015-04-08|2016-10-12|Siemens Aktiengesellschaft|Energy storage system and method|
    DE202016107499U1|2016-12-30|2017-03-02|INTENSATEC sales GmbH|Heat storage element|
    法律状态:
    2020-08-31| FG| Patent granted|Ref document number: 128601 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20195158A|FI128601B|2019-03-05|2019-03-05|Arrangement for energy storage|FI20195158A| FI128601B|2019-03-05|2019-03-05|Arrangement for energy storage|
    EP20767390.6A| EP3935336A1|2019-03-05|2020-02-28|Arrangement for storing of energy|
    PCT/FI2020/050128| WO2020178479A1|2019-03-05|2020-02-28|Arrangement for storing of energy|
    CN202080018745.4A| CN113518890A|2019-03-05|2020-02-28|Device for storing energy|
    [返回顶部]