• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    transport and storage device and system with high efficiency. the present invention relates to a device (1) for storing and conducting thermal energy to an energy production system, the device (1) of which is capable of receiving solar radiation and is based on the use of a modular fluidizable granular bed and a heat exchange associated with it. modular fluidization allows for selective heat storage or thermal transfer to the exchanger. on the basis of such use, there are favorable functions of thermal exchange of fluidized beds and the effective coefficient of heat conduction subsequent to the mobility of the granular phase. these functions are linked to the possibility of transmitting a rheological behavior to a granular solid that is comparable to that of a fluid, thanks to its fluidization. such a device mainly comprises: - a containment shell (2) provided with one or more cavities that receive solar radiation (20); - a fluidizable bed of granular particles (3) suitable for storage and thermal energy condition, arranged inside the containment shell (2); - a feed inlet to feed a fluidizing gas through the bed (3) of particles by a suitable distributor (21); - a heat exchange (4) immersed in the fluidizable granular bed and crossed by a fluid in operation; and - a feed inlet for a combustible gas (401) as an additional thermal inlet to increase system management flexibility.
    公开号:BR112012027817B1
    申请号:R112012027817-7
    申请日:2011-04-22
    公开日:2020-12-15
    发明作者:Mario Magaldi；Gennaro De Michele
    申请人:Magaldi Industrie S.R.L；
    IPC主号:
    专利说明:

    DESCRIPTION Field of the Invention
    [0001] The present invention relates to a device for storing and transporting thermal energy, in particular of solar origin, preferably for its subsequent or simultaneous use for the production of electrical energy. Background of the Invention
    [0002] It is known to store solar energy, for subsequent uses, concentrated by heliostats, fixed or tracking, inside a receiver that consists of a block of material having a high thermal conductivity (typically, graphite). Such a block generally carries a properly oriented cavity where said heliostats are directed. The receiver block, furthermore, is typically associated with a heat exchange having tube assemblies immersed in the same block and crossed by a fluid in operation - or carrier fluid, typically water, in liquid or vapor at a high temperature. The heat stored in the receiver block is transferred to that operating fluid in order to produce steam or heat for industrial plants.
    [0003] In a system to store solar energy in the graphite block of the type described above, the temperatures involved can vary from 400 ° C to 2000 ° C. The upper temperature limit is connected by the thermal resistance of the heat exchange, and in particular the metal tube assemblies thereof. In particular, with respect to the temperature difference between the inlet fluid and the exchanger tubes, the thermodynamic conditions of the fluid can change as quickly as to create strong stresses of the metal pipe (thermal and mechanical shocks), as subject to heat exchanges. to extreme physical conditions, with the laughter of excessive internal tensions and subsequent rupture.
    [0004] In addition, one of the systems difficulties described is to ensure continuity in the amount of heat removed by the accumulator, since the storage step is linked to atmospheric conditions and day / night cycles. The known systems are therefore very versatile in terms of their ability to adopt the downstream energy requirements.
    [0005] In general, in addition, the known systems are not optimized in terms of efficiency of use and conversion of the incoming electrical energy. Summary of the Invention
    [0006] The technical problem underlying the present invention is then to overcome the disadvantages mentioned with reference to the prior art.
    [0007] The above problem is solved by a device, according to claim 1, by a plant, preferably for energy production, comprising the same and by a method, according to claim 25.
    [0008] The preferred functions of the invention are contained in the dependent claims.
    [0009] An important advantage of the invention is that it allows to obtain thermal energy storage of solar origin in an efficient and reliable way, reducing the thermal stresses of the exchangers and increasing the efficiency of the thermal exchange to the charging fluid, thanks to the use of a fluidizable granular bed that can perform a dual function of heat storage and thermal loader. On the basis of such use, there are the favorable characteristics of thermal exchange of fluidized beds and the effective transport of heat by convection subsequent to the mobility of the granular phase. These functions are linked to the possibility of transmitting a rheological behavior to a granular solid that is comparable to that of a fluid, currently thanks to its fluidization.
    [00010] In addition, thanks to the possibility of controlled and effective fluidization of the granular storage medium, better continuity of heat extraction and an optimized capacity to adapt to downstream energy requirements are guaranteed.
    [00011] In addition, greater flexibility in energy production is possible by burning gaseous fuel within the fluidized bed, as should be better explained in the detailed description of the preferred modalities made below.
    [00012] Other advantages, functions and methods of use of the present invention will appear clearly from the detailed description below of some of its modalities, illustrated in the form of a non-limiting example. Brief description of the drawings
    [00013] Reference should be made to the figures in the accompanying drawings, in which: - Figure 1 shows a diagram of a system that incorporates a preferred embodiment of a device for storing and conducting thermal energy according to the invention, supplied with a single receiving cavity; Figure 1a shows a plan view of the device of Figure 1, which shows the modularity of a bed of fluidizable particles of the same device; - Figure 2 shows a diagram of a system referring to a version of the first modality of the device of figure 1, supplied with several receiving cavities; - Figure 3 shows a diagram of a system referring to a version of the second modality of the device of figure 1, in which the bed of fluidizable particles is directly exposed to a receiving cavity and another block of storage medium is provided, disposed on the periphery of the said fluidizable bed; - Figure 4 shows a diagram of a system referring to a version of the third modality of the device of figure 1, in which the bed of fluidizable particles is directly exposed to the various receiver cavities and another fluidized bed is provided to transfer heat to the tubes. an exchanger; - Figure 5 shows a diagram of a system referring to a version of the fourth modality of the storage device of figure 1, having a double fluidizable bed as in figure 4, but with a single central receiving cavity; and - Figure 6 shows a device of the type shown in the previous figures inserted in a system not supplied with a combustion of combustible gas and which has a closed circuit of a fluidizing gas. Detailed description of preferred modalities
    [00014] With reference first to Figures 1 and 1a, a device for storage and transfer of thermal energy according to a preferred embodiment of the invention is shown, as an example, as inserted in a power plant for the production of electrical energy globally indicated with the reference numeral 100.
    [00015] System 100 comprises one or more devices for storage and transfer of thermal energy, one that is globally indicated with reference numeral 1 (for simplicity, figure 1 shows only one device).
    [00016] Device 1 is able to store the thermal energy that originates from solar radiation conducted / concentrated in it, for example, by fixed or tracking heliostats.
    [00017] The device 1 comprises a containment housing 2 preferably of metal and thermally insulated therein to reduce the dispersion of heat to the external environment.
    [00018] Housing 2 carries a cavity 20 in which the solar energy is concentrated.
    [00019] A feed inlet 21 is obtained in housing 2 for a fluidizing gas, the function of which should be clarified later.
    [00020] In an upper part of the casing 2, the device 1 is provided with a flow channel 5 for the fluidizing means, the function of this must also be clarified later in this case.
    [00021] In the present example - and as is best shown in figure 1a - device 1 has a whole cylindrical geometry, with the cavity 20 arranged centrally and having a wide development.
    [00022] A storage medium 30 is disposed within envelope 2, preferably formed as a block of monolithic graphite or comprising graphite and obtained, for example, by compacting granular material. In the present embodiment, the storage medium 30 is disposed only in the cavity 20, to define its peripheral walls and thus be directly affected by the solar radiation concentrated in the same cavity 20.
    [00023] At the entrance of the cavity 20, a plate 13 of a substantially transparent material, preferably quartz, may be arranged. Preferably, the plate 13 is suitably treated to be permeable to solar radiation entering the cavity and impervious to infrared radiation leaving it. The plate 13 then has the function of isolating the receiving cavity 20 from the external environment, reducing noise for radiation from inside the device 1.
    [00024] The walls of the cavity 20 may also have a metal coating 31 or an equivalent coating - shown in a purely schematic form in figure 1 - that preserves the storage medium 30 from oxidation and optionally retains a possible dispersion of the fine particles that come from the same storage medium, for example, if the graphite is subject to the dust that is used.
    [00025] Variant modalities can provide a different material for the storage block above 30, provided that it has high thermal conductivity and capacity that allows a quick diffusion of heat within the same block and an appreciation of the amount of heat stored.
    [00026] Within the enclosure 2 and limited to the monolithic storage block 30, according to the invention, a bed of fluidizable particles is provided, globally indicated with reference numeral 3. The particles of bed 3 are also suitable for storage of thermal energy and are made of a material suitable for thermal storage and according to the preferred functions described later.
    [00027] The tube sets 4 of the heat exchange, which in use pass through a fluid in operation, are disposed within the bed of particles 3, or in proximity to it.
    [00028] As mentioned above, the inlet 21 of the device 1 is suitable to allow entry into the casing 2 - and especially through the bed of particles 3 - of a fluidizing gas, typically air. In particular, the whole arrangement is such that the gas can move the particles of the bed 3 to generate a corresponding flow / movement of particles suitable for the heat exchange between the particles and the tube assemblies 4.
    [00029] At the entrance 21, a fluidization gas distribution septum is provided, suitable to allow the gas to enter while guaranteeing a support for the particle bed 3.
    [00030] A dust separator 6, typically with inertial pendulums or equivalent devices with low pressure losses and cyclone operation, is placed in line with flow channel 5 and depulverizes the outlet gas returning the separated particles of the gas within the wrapper 2.
    [00031] The position of the tube assemblies 4 with respect to the particle bed, or rather the exposure of the tube surface with respect to the particle bed, is as to increase the amount of heat exchange, the latter being proportional to the product of a coefficient of heat exchange and the surface involved in the same heat exchange.
    [00032] The tube assemblies 4 can be immersed or partially immersed in the particle bed 3 (as in the example of figure 1) or facing it. The choice depends on the management modes to be used for the device and on the minimum and maximum height of the particle bed in the variation of the fluidization speed gas. In particular, as this speed increases, the surface of the set of tubes involved in the heat exchange increases.
    [00033] As shown in figure 1a, the bed of particles 3 is preferably divided into several sections, optionally by divisions 330, having a modular structure that allows a selective fluidization of this, by a compartment of the area of fluidization and gas supply only in bed parts selectable according to specific operational requirements.
    [00034] The supply of the fluidizing gas to the inlet 21 of the device 1 occurs by means of feeding of the plant 100 comprising feeding channels 210 connected to the forced circulation medium 8, typically one or more fans. In particular, the supply medium defines a circuit that collects the gas, preferably the ambient air, that enters the inlet 21 of the device 1 and downstream of it, through channel 5, to the spraying medium 6 and to an exchanger 7 for preheating of the fluid in operation. A manifold 14, or air box, is also provided for the inlet of the fluidizing gas.
    [00035] The feeding means can be selectively controlled to decay the fluidization rate gas and thus the entire heat exchange coefficient between the bed particles 3 and the tube assemblies 4.
    [00036] In fact, by changing the cross velocity of the gas, it is possible to control and modify the entire thermal exchange coefficient of the fluidized bed towards the storage block and the fluid in operation, with consequent flexibility in adjusting the amount of thermal energy transferred. This effect is especially useful for adjusting the amount of heat transferred from the storage medium to the fluid in operation through the particle bed, due to solar radiation conditions depending on the required load.
    [00037] The fluidization condition of the particle bed is preferably boiling, or in any case how to increase the coefficient of heat exchange and reduce the conduction of fine particles in the fluidization gas. For this purpose, the choice of bed particulate material is based on the thermal functions of high thermal conductivity and conductivity of the material that constitutes the same particles and in particular on low abrasiveness to fulfill the need to reduce the erosion phenomenon of the storage block and particles from the same bed, to limit the production and conduction of fine particles to the fluidizing gas. Based on these observations, a preferred configuration favors the use, for bed 3 particles, of granular material inert to oxidation, with a regular shape, preferably spheroid and / or preferably of size within the range of 50 - 200 microns; and so that the dimension is preferably native, that is, not resulting from the aggregation of the smaller particles.
    [00038] When necessary, it is possible to provide a surface of material of high thermal conductivity 32 to protect the part of the storage block involved in the action of the bed of granular material.
    [00039] With respect to the fluid in operation, in the present example and in the preferred configuration, that is water that crosses the tube assemblies 4 and due to the effect of the heat exchanged to the fluidized bed, it vaporizes.
    [00040] The fluid circuit in operation is provided with channels 90 that define the tube assemblies 4 inside the device 1, and in the example given in figure 1 they supply a steam turbine 10 connected to an electricity generator, a condenser 11, a feed pump 12 and the heat exchange 7 which acts as a preheater.
    [00041] The entire device 1 is thermally insulated and if the material (s) constitute (s) the storage block 30 and / or the particle bed 3 is / are not inert to air (ie , can pass through the oxidation phenomenon), it is necessary to evacuate the air from the internal environment 1 and / or an over pressure of the internal environment light obtained with an inert gas. In this case, the fluidization gas of the particle bed must be inert and the supply circuit for said gas is closed, as shown in figure 6.
    [00042] Device 1 is provided with a thermally insulated system to close the receiving cavity (system not shown in the figure), which prevents the dispersion of thermal energy from the same cavity to the external environment. This optionally automatic closing system is activated during the night.
    [00043] In a variant embodiment, the storage device 1 is associated with a secondary reflector / concentrator, not shown in the figures, positioned at the entrance of the cavity 20 and thus around the entrance of the housing 2 which allows access of the concentrated radiation by the heliostats .
    [00044] Such secondary reflector, thanks to the properly formed internal reflecting surface, for example, with a parabolic or hyperbolic profile, allows to recover part of the reflected radiation that would not reach cavity 20. In fact, a part of the radiation reflected by the heliostats, for reasons due to imperfections of the surfaces and / or aiming at the same, it does not enter the entered cavity and then it would be lost.
    [00045] A possible alternative would be to obtain a wider entrance to the cavity: however, this solution would considerably increase the radiation from the same cavity towards the external environment, with the result of losing a considerable part of the energy. The use of the secondary concentrator also allows to release the limits of the drawing in relation to the precision of the heliostat flexion that causes a variation of the dimension of the reflected beam in the receiver. In addition, the use of said secondary concentrator allows the use of flat heliostats, with an area that does not exceed the entrance surface. This aspect greatly influences the total cost of the technology: flat mirrors are very cheap and the cost of heliostats typically represents half the total cost of a system.
    [00046] The orientation of the local concentrator described here follows the orientation and position of the cavity facing the heliostat field.
    [00047] The common use of the already mentioned quartz plate 13, or other transparent material, and the secondary concentrator, arranged at the entrance of the receiving cavity, is particularly advantageous, since both contribute to increase the absorption factor of the available energy.
    [00048] Based on the other variant modality mentioned in figure 2, the device of the invention - indicated here with the reference numeral 102 and inserted in a plant 101 - can be supplied with several receiving wells, two wells 201 and 202 being shown in figure for the example described. The presence of the various receiver cavities allows to mitigate the thermal flows that affect the internal walls of the single cavity and reduce operating temperatures, increasing the competitiveness and performance of the materials used as the cavity lining. In this case, the functions described above with reference to the embodiment of figures 1 and 1a for the single cavity 20 are the same for each cavity 201 and 202.
    [00049] Unlike the storage device described with reference to figure 1, device 102 provides the bed of particles 3 to be centrally disposed and for the monolithic or granular storage block, indicated with reference numeral 301, to be disposed laterally to the bed.
    [00050] Along the fluid line in operation of plant 101, a degasser 40 is disposed in the turbine 10 and, upstream of this, an extraction pump 120 or an equivalent medium.
    [00051] For the rest, device 102 and system 101 are similar to those already described with reference to figure 1.
    [00052] With reference to figure 3, another variant modality of the device of the invention, indicated with the reference numeral 104 and inserted in a system 103, provides the granular material that constitutes the fluidizable bed 3 to receive the solar thermal energy directly from the surfaces of the receiving cavity 20 and thus serve as the storage medium in addition to serving as a thermal loader. Any possible additional storage material, indicated with reference numeral 300, can be positioned on the periphery of the fluidizable bed. In this configuration of the particle bed, when fluidized, the thermal energy from the walls of the receiving cavity resists and transfers it to the heat exchange tubes set 4 and to the surfaces of the storage medium 300, if provided. As already stated, the speed of heat transfer, that is, the coefficient of heat exchange is regulated by the speed of the fluidizing air.
    [00053] In the presence of solar radiation, solar energy is concentrated in cavity 20 and, by fluidizing the bed of particles, the thermal energy is partially transferred to the tubes of the exchanger 4 and partially to the storage medium 300. The direction of the transfer of heat is from cavity 20 to the particle bed 3 and thus to the exchanger 4 and the storage medium 300, the same being at a temperature lower than the granular material 3 and in direct contact with the cavity 20.
    [00054] In the absence of solar energy, for example, during the night, by means of the fluidization of the bed of particles 3, the passage of heat occurs from the storage medium 300 to the particles of the bed 3 and, thus, to the tubes 4 of the exchanger, ensuring continuity of operation and distribution of steam and thus thermal energy from the device. Thus, in the absence of solar energy concentrated in the receiving cavity 20, the direction of the heat transfer reverses from the storage medium, which stored thermal energy transferred through the fluidization of the bed of particles during the hours of isolation, towards the particles of the same bed , that is, towards the heat exchange tubes.
    [00055] For the rest, the device 104 and the system 103 of figure 3 are similar to those already described with reference to figures 1 and 2.
    [00056] With reference to figure 4, another variant modality of the device of the invention, indicated with the reference numeral 106 and inserted in a plant 105, is provided with a first and a second fluidizable bed, respectively indicated with reference numerals 304 and 305, the first arranged concentrically to the second, and with the function of the storage medium and thermal loader, respectively.
    [00057] Always with reference to figure 4, the granular material that constitutes the first fluidizable bed 304 receives thermal solar energy directly from the surfaces of the receiving cavities, here indicated with reference numerals 203 and 204, and thus serves as the means of storage. Heat transfer, on the other hand, is carried out by the second fluidizable bed 305 disposed within the first 304 and on which the tubes 4 of the heat exchange are seated. This configuration allows greater flexibility of the system in the storage stage and in the release of heat to the charging fluid, thanks to the possibility of acting independently of the activation and speeds of the fluidizing gas of the two granular material beds and / or the sections thereof.
    [00058] A similar configuration is the version shown in figure 5, in which the position of the two beds, that is, storage and loader, is inverted compared to the case of figure 4, since in figure 5 a single receiving cavity 205 is provided in the central position.
    [00059] As already mentioned, fluidized beds may also not be separated by physical divisions 330, but by the individual activation of the modular zones through the fluidization gas compartment.
    [00060] For any of the configurations described, dimensioning of the device, and in particular the granular bed, the range of the fluidizing speed gas, the amount of the storage medium (solid or granular) optionally associated with the fluidized bed, as well as the surfaces of the heat exchange, are to guarantee the storage of thermal energy during hours of sunlight and conduction of it during the night in the heat exchange through the fluidization of the bed particles.
    [00061] In addition, as already mentioned, for any of the described configurations using a modular structure of the fluidized bed and the modulation of the fluidization of the same particles for each section, it is possible to regulate the amount of thermal energy transferred to the tubes, choosing to use a or more sections for storage or heat transfer by selective and / or differentiated fluidization thereof, ensuring the continuous operation of the device of the invention.
    [00062] Furthermore, with plants supplied with various devices of the invention, as illustrated so far, the possibility of regulating the amount of heat transfer to the exchanger for each device and necessary to keep the temperature and pressure of the steam produced constant allows the advantage to maintain, reduce or increase energy production.
    [00063] In the case of systems based on several devices, the dimensioning of the same and the operational logic are coordinated to obtain a predetermined energy production even in the absence of solar radiation.
    [00064] In the description above, reference was made in the form of an example the application of the device to an autonomous system for the production of electrical energy. However, it must be understood that the possible applications of the device are wide and related to the production of steam or heat for industrial systems such as thermoelectric plants, salt removal systems, tele-heating and so on.
    [00065] The provisions of the law that regulate the production of energy from renewable sources allow a minimum sharing of the same energy to be produced by the combustion of fossil fuels. Generally, in the prior art devices this operation is carried out in production units separate from the main production system.
    [00066] On the contrary, an important advantage of power generation plants based on the device of the invention is the possibility of burning gaseous fossil fuel within the fluidized bed.
    [00067] For this reason, for each of the modalities described here with reference to the respective figures 1-3, these last figures show a flue gas inlet 401 in the fluidizable bed that acts as a thermal loader and directly in the gas supply channels. fluidization.
    [00068] For the variants of figures 4 and 5, such flue gas supply can be provided, as shown, for one or both fluidizable beds.
    [00069] All figures related to the description show a schematic of the configurations and, therefore, they cannot show components such as valves or sensors, etc. which must be provided for the conventional regulation of fluid circuits.
    [00070] At this point, it should be better understood that the fluidized bed system has the double advantage of high heat exchange coefficients in the bed storage medium or at the bed-by-bed interface and on the tube surfaces immersed in the granular bed, in addition to a high thermal “conductivity” of the same granular bed, an essential property in relation to the possibility of quickly loading / unloading the thermal accumulator in the transitory operational stages.
    [00071] Thus, the invention allows for storage of thermal energy within the particle bed and the variation of thermal energy at the output of the system by modulating the fluidization speed of the same particles.
    [00072] Still, the use of several cavities properly dimensioned and oriented towards the mirror field allows to reduce thermal flows and mitigate the maximum temperatures that would affect the single cavity, making the choice of coating technologies and materials for the walls of the same cavity more competitive.
    [00073] The modular structure of the fluidized bed then allows to operate one or more sections with considerable management margins and makes the availability of the system less dependent on atmospheric conditions and the availability of the energy generator.
    [00074] In addition, the concurrent combustion of combustible gas within the fluidized bed of the device allows to keep the energy production of the system constant even in periods of low isolation.
    [00075] Finally, it should be understood that the invention also provides a method for storing and exchanging heat as defined in the following claims and having the same preferred functions described above with reference to the various embodiments and versions of the device and plant of the invention.
    [00076] The present invention has been described so far with reference to preferred embodiments. It should be understood that other modalities may exist that refer to the same inventive scope, as defined by the scope of protection of the following claims.
    权利要求:
    Claims (24)
    [0001]
    1. Device for storage and transfer of thermal energy (1) of solar origin, able to receive solar radiation, the device (1) characterized by the fact that it comprises: - a containment shell (2); - tube sets (4) - a bed of particles (3) capable of storing thermal energy of solar origin, received within said containment shell (2); and - at least one feed inlet to feed a fluidizing gas through said bed of particles (3), the entire arrangement being such that, in use, such fluidizing gas moves particles from said bed (3) causing or promoting a heat exchange from the particles to the tube assemblies (4) in which a fluid in operation flows.
    [0002]
    2. Device (1) according to claim 1, characterized in that the particles of said bed (3) are made of a granular material in a substantially regular manner, preferably a spherical shape.
    [0003]
    Device (1) according to claim 1 or 2, characterized by the fact that it comprises a compartment in the fluidization area, capable of allowing selective and / or differentiated fluidization of one or more parts of said particle bed by fluidizing gas.
    [0004]
    4. Device (1) according to any one of the preceding claims, characterized by the fact that it further comprises another storage medium in the form of a monolithic block (30), which is preferably graphite or comprises graphite and / or which is preferably obtained by compacting a material in granular form.
    [0005]
    Device (106) according to any one of the preceding claims, characterized in that it further comprises another storage medium in the form of another bed of fluidizable particles (304) received within said containment shell (2), said particle beds (305, 304) preferably being arranged concentrically to each other.
    [0006]
    6. Device (1) according to any one of the preceding claims, characterized by the fact that it has one or more receiving cavities (20) within which or within each of which the solar radiation is concentrated, in which preferably a plate (13) of a substantially transparent material, preferably quartz, is arranged in correspondence of the mouth of said or each cavity (20).
    [0007]
    7. Device (1) according to claim 6, characterized by the fact that it comprises a secondary solar radiation concentrator, placed at the entrance of said or at least in a receiving cavity (20).
    [0008]
    Device (104) according to claim 6 or 7, when dependent on claim 5, characterized by the fact that said bed of particles (3) is immediately arranged in correspondence of said or at least one of said cavities (20).
    [0009]
    9. Device (1) according to any one of the preceding claims, characterized by the fact that it has a flow channel (5) for the fluidizing gas.
    [0010]
    10. Device (1) according to any one of the preceding claims, characterized by the fact that it comprises one or more heat exchange elements (4) that receive or are able to receive a fluid in operation and are willing to come into contact with contact with said bed of particles (3) and / or to be touched, in use, by said bed (3) when the latter is fluidized by said fluidizing gas.
    [0011]
    11. Plant (100) to produce steam or heat for industrial uses, preferably a power generation plant, characterized by the fact that it comprises one or more devices (1), as defined in any of the preceding claims.
    [0012]
    Plant (100), according to claim 11, characterized by the fact that it comprises means (210, 8) to feed the fluidizing gas through at least one inlet (21) of said device (1), wherein the feeding means comprise means (8) for the forced circulation of the fluidizing gas.
    [0013]
    13. Plant (100), according to claim 12, characterized by the fact that said feed medium is selectively controllable to change the speed of the fluidizing gas.
    [0014]
    Plant (100) according to any one of claims 11 to 13, characterized in that it comprises means (6) for depulverizing the fluidizing gas.
    [0015]
    Plant (100) according to any one of claims 11 to 14, characterized by the fact that it comprises means for a selective supply of the fluidizing gas to the selected parts of said bed (3) of particles.
    [0016]
    16. Plant (100) according to any one of claims 11 to 15, characterized in that it comprises means (401) for supplying a flue gas within said housing (2) of said device (1).
    [0017]
    17. Method of storage and subsequent exchange of thermal energy of solar origin, characterized by the fact that it provides the use of a bed of particles (3) that receives and stores thermal energy of solar origin, and a fluidization of said bed of particles ( 3) so that it causes or promotes a thermal exchange from the particle bed (3) to the tube assemblies (4) of a heat exchanger.
    [0018]
    18. Method, according to claim 17, characterized by the fact that said fluidization is carried out by a controlled supply of a fluidizing gas, preferably air.
    [0019]
    19. Method according to claim 17 or 18, characterized by the fact that providing a differentiated fluidization of the selected parts of said bed of particles (3).
    [0020]
    20. Method according to any one of claims 17 to 19, characterized by the fact that a fluid in operation, which is water and / or steam, travels in said tube assemblies (4).
    [0021]
    21. Method according to any of claims 17 to 20, characterized in that it provides a step of storing thermal energy in a storage medium (30, 3) during hours of sunlight and a step of transferring heat from said medium (30) to the tube assemblies (4) by fluidizing the bed of particles (3) in the absence of solar radiation.
    [0022]
    22. Method according to any one of claims 17 to 21, characterized in that it provides for the use of one or more devices (1) or a plant (100), as defined in any one of claims 1 to 24.
    [0023]
    23. Method according to any one of claims 17 to 22, characterized in that it provides a combustion of gaseous fossil fuel within said particle bed (3) of said device (1).
    [0024]
    24. Method according to any one of claims 17 to 23, characterized by the fact that it provides a step of storing thermal energy and concomitant or deferred transfer of said energy to the heat exchanger, in order to obtain a constant generation of energy .
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    同族专利:
    公开号 | 公开日
    PT2564127E|2015-02-05|
    TWI558961B|2016-11-21|
    CN102859292A|2013-01-02|
    EP2564127A2|2013-03-06|
    ES2527537T3|2015-01-26|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-09-24| B09A| Decision: intention to grant|
    2020-12-15| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/04/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    ITRM2010A000203A|IT1399952B1|2010-04-29|2010-04-29|HIGH-LEVEL STORAGE AND TRANSPORTATION AND TRANSPORT SYSTEM OF ENERGY EFFICIENCY|
    ITRM2010A000203|2010-04-29|
    PCT/IB2011/051769|WO2011135501A2|2010-04-29|2011-04-22|Storing and transport device and system with high efficiency|
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