EP2525172A1 - Stock de congélation doté d'une protection contre la sous-congélation - Google Patents

Stock de congélation doté d'une protection contre la sous-congélation Download PDF

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Publication number
EP2525172A1
EP2525172A1 EP11004144A EP11004144A EP2525172A1 EP 2525172 A1 EP2525172 A1 EP 2525172A1 EP 11004144 A EP11004144 A EP 11004144A EP 11004144 A EP11004144 A EP 11004144A EP 2525172 A1 EP2525172 A1 EP 2525172A1
Authority
EP
European Patent Office
Prior art keywords
deep
battery storage
storage
store according
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11004144A
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German (de)
English (en)
Inventor
Thomas Dr. Mielke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metroplan Process Management GmbH
Original Assignee
Metroplan Process Management GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metroplan Process Management GmbH filed Critical Metroplan Process Management GmbH
Priority to EP11004144A priority Critical patent/EP2525172A1/fr
Publication of EP2525172A1 publication Critical patent/EP2525172A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate

Definitions

  • the invention relates to a frozen storage with a storage space in which a temperature of less than 0 ° C is maintained, and a Unterfrierschutz, which is arranged below the storage room to prevent freezing of the soil below the storage room.
  • Such cold storage are permanently operated in a temperature range below freezing, often for example in the range of -25 ° C to -30 ° C. Because of these low temperatures, groundwater or stratum water, which in certain circumstances, for example during heavy rains, can reach as far as a bottom plate of the frozen food store, can freeze. The resulting distortions in the ground can damage the bottom plate or other components of the freezer or the foundation.
  • the frozen storage has a storage room in which a temperature of less than 0 ° C is maintained, and a Uztterfriertik, which is located below the storage room to prevent freezing of the soil below the storage room, the anti-freeze has a battery storage, which has a Having a plurality of batteries and is connected to an electrical supply network to provide positive and negative control power for the electrical supply network.
  • the temperature maintained in the storage room can be well below freezing, for example below -15 ° C or in the range of -25 ° C to -30 ° C.
  • the battery storage unit serves to provide control power. Regulation power is needed to balance the electrical power fed into the utility grid, such as a public utility grid, with the electrical power drawn from the utility grid. There is a distinction between primary, secondary and tertiary control power. The provision of the required balancing power increasingly presents network operators with challenges because of the increasing share of renewable energies, such as wind and solar energy, which, unlike conventional power plants, can not be regulated, the fluctuations in the electrical power supplied increase.
  • the battery storage system can contribute to the provision of the required control power by using both a variety of batteries, which together form a powerful battery storage, both electrical power to the supply network (positive control performance) and electrical power from the supply network record (negative control power ) can.
  • the battery storage is discharged or charged. It can be used any battery technologies, such as lithium-ion or nickel-cadmium storage batteries.
  • the batteries can be supplemented by other power storage, such as capacitors.
  • the invention is based on the recognition that a battery storage plant produces waste heat, in particular because of the below 100% efficiency of the batteries used both when charging the batteries and when discharging the batteries. This can be used for the Unterfrierschutz the freezer.
  • the waste heat of the battery storage plant may be the only heat source of the anti-freeze protection, thus completely replacing a conventional anti-freeze protection with an electric heating element, or merely providing a substantial contribution to the required heat.
  • a battery storage plant is particularly suitable for arrangement below a freezer storage, because the resulting from this arrangement boundary conditions for the operation of a battery storage system are not critical. In particular, the lack of daylight and possibly limited accessibility pose no problems for the operation of the battery storage system.
  • Another aspect is the scalability of the battery storage system, which allows adaptation to the heat demand of Unterfriersehutzes.
  • a further advantage is that naturally low temperatures prevail below the storage space of the deep-freeze storage because of the heat sink formed by the storage space and the lack of solar radiation, which is advantageous for the operation of the battery storage plant.
  • conventional battery storage plants usually require cooling. In the invention, this may be omitted under circumstances, dimensioned weaker or replaced by a more cost-effective ventilation.
  • the battery storage plant is housed in an operating room, the base area substantially corresponds to the base of the storage room.
  • the plurality of batteries is arranged, in particular in a rack warehouse.
  • other intended for the operation of the battery storage plants can be located in the operating room, such as a converter for feeding and removing the control power and other electrical equipment.
  • the heat generated during operation of the battery storage can be distributed in the operating room, so that the anti-freeze protection is effective below the entire surface of the storage room.
  • the operating room is arranged in a basement.
  • a separate floor of the freezer storage is provided for the battery storage, which can be entered and / or driven on.
  • the storage space of the freezer storage can be arranged in the upper floor, ie on the ground floor or substantially at ground level.
  • the battery storage plant may provide control power of 500 kW or more. This power can be fed into the supply network as a positive control power or taken from the supply network as a negative control power. For this purpose, a corresponding dimensioning of the battery storage, in particular a cell number required for said performance is necessary, as well as a corresponding dimensioning of the inverter and / or chargers.
  • the battery storage system may provide control power of 5MW, 10MW or 15MW or more, thus meeting the minimum requirements for primary, secondary and tertiary power provision defined by many network operators. At the same time, these services ensure that For most deep-freeze warehouses, a sufficient level of under-protection is achieved in every situation without the need to introduce heat by other means.
  • the plurality of batteries has a total capacity of 1 MWh or more. This allows the battery storage system to provide the retrieved control power, if necessary, over a relatively long period of time.
  • a heat insulation layer is arranged between the storage room and the battery storage plant. As a result, on the one hand counteracts freezing of the soil below the storage room. On the other hand, less energy is required for the operation of the refrigeration units of the freezer storage by good thermal insulation.
  • the battery storage device has a controller that controls the feeding of electrical power into the supply network by driving an inverter. In this way, a network-compliant feeding of the control power is achieved in the supply network.
  • the battery storage device has a controller that controls the removal of electrical power from the supply network by driving a charger. In this way, control power is suitably removed from the mains and used in the form of direct current for charging the batteries.
  • the deep-frozen storage on a cooling device which is operable with electrical energy and the battery storage plant is independent of the electrical supply network connected to the cooling device, so that the Cooling device is directly supplied with electrical energy from the battery storage plant.
  • an exchange of electrical energy is also possible via the electrical supply network. Due to the direct connection of the cooling device with the battery storage plant, the electrical energy can be used from the battery storage without detour via the supply network for operating the cooling device. An operation of the cooling device is therefore possible even in the event of a failure of the supply network.
  • economic benefits may arise, such as when it is appropriate to discharge the batteries in view of the future control power to be provided.
  • the storage space has a usable area of 100 m 2 or more. It can also be 200 m 2 , 500 m 2 , 1000 m 2 or 5000 m 2 or more.
  • the invention is basically suitable for arbitrarily dimensioned deep-freeze stores, which require a Unterfriertik for permanently trouble-free operation.
  • FIGS. 3 to 5 represent the state of the art and will be explained first.
  • Fig. 3 shows the floor plan of a refrigerated warehouse with a floor area of about 500 m 2 .
  • the storage room 10 of the freezer warehouse in which a temperature of about -25 ° C is maintained permanently.
  • a heating element 12 which extends over a length of a few meters and is disposed within a protective tube 14.
  • the heating element 12 is connected to the supply of electrical energy via a connecting line 16 to a power source, so that as Unterfrierschutz heat can be introduced into an area below the storage room.
  • the heating element 12 can be brought from outside through a heating element inlet 18 in the position shown.
  • the mean temperature outside the storage room is 10 +10 ° C.
  • Fig. 4 shows a cross section through Fig. 3 along the in Fig. 3 Shown below a bottom 22 is a heat insulating layer 24.
  • the heating element 12 with protective tube 14 is located below the heat insulating layer 24.
  • the heat introduced via the heating element 12 is indicated by three arrows. It spreads below the heat insulating layer 24, Furthermore, ambient heat from the outside passes under the heat insulating layer 24, as illustrated by the arrows 26. Overall, it is achieved by the arrangement shown that the temperature below the storage space 10 or below the heat insulating layer 24 is permanently above the freezing point.
  • Fig. 5 shows the structure of the floor of the freezer warehouse Fig. 3 in section, also along the cutting plane 20.
  • a wear layer 28 on which the frozen storage is farmed.
  • a reinforced Tragbcton für 30 is arranged.
  • the heat insulating layer 24 which consists of foam polystyrene in the example shown.
  • the heat insulating layer 24 is separated from the supporting concrete layer 30 by a moisture protection and a sliding layer 32.
  • Below the heat insulation layer 24 is a water vapor barrier 34. Below the water vapor barrier 34 is followed by a reinforced sub-concrete layer 36 at. This rests on a gravel layer 38. Below the gravel layer 38 is located as a central heat source, the heating element 12 with protective tube 14.
  • the FIG. 5 a temperature control tube 39 extending through the sub-concrete layer 36. Inside is a temperature sensor that can be used to monitor the temperature below the storage room.
  • FIG. 1 shows greatly simplified and schematically an inventive frozen storage.
  • the level of the surrounding soil is indicated by dashed lines at 40.
  • the storage space 42 according to the invention has a base area of approximately 1,000 m 2 and an approximately ground-level floor 44.
  • a battery storage 46 shown as Unterfrierschutz.
  • This has a plurality of batteries 48, which via an inverter 51 and a charger 50 to an electrical supply network 52nd are connected.
  • About the inverter 51 and a suitable controller can be taken from the batteries 48 electrical power and fed as a control power via an electrical power 74 in the supply network 52. It is also possible to provide negative control power available and accordingly receive electrical power from the supply network 52 and use the charger 50 for charging the batteries 48.
  • charger 50 and inverter 51 may form one unit and may contain some common or shared switching or other elements. However, it may also be separate devices, which are each connected to the supply network 52 and the battery 48 formed by the battery storage.
  • the entire battery storage 46 is located in an operating room 54, which is designed as a basement. It has substantially the same footprint as the storage space 42. Between the bottom 44 of the storage room 42 and the battery storage 46 and the operating room 54, a heat insulating layer 56 is arranged. For cooling the storage space 42, there is an electrically operable cooling device 70, which is connected via an electrical line 76 to the supply network 52. In addition, it is connected via an electrical line 72 to the inverter 51. The latter connection can be made independently of the availability of the supply network 52.
  • FIG. 2 shows a floor plan of the operating room 54 of the battery storage 46. Shown is a Regallagcr, which is designed as a broadband warehouse with, for example, 1,080 parking spaces.
  • the shelves 58 are arranged in rows. Between the shelves 58 forklifts 60 are shown, for example, for storing the batteries 48, which are housed in the shelves 58, or can be used for maintenance tasks.
  • Much of the area of the Operating room 54 is occupied by the broad aisle warehouse.
  • there are four more rooms in the FIG. 2 are shown below. These are an equipment room with workshop 62, an electrical operating room 64, a space 66 for a phase reactor and a space 68 for a heat exchanger.
  • an additional power transformer In the electrical operating room 64 for the operation of the battery storage 46 required Lcit- and control technology, an additional power transformer, a voltage control system (voltage control system, VCS) and suppression capacitors are arranged. In the electrical operating room 64 is also the inverter 51 and the charger 50th
  • the heat exchanger in the space 68 serves for the additional utilization of the waste heat of the battery storage plant for other purposes.
  • the phase reactor provides protection against high voltage spikes. Further protective devices of the battery storage system against high voltages and currents, such as a DC voltage fuse, are not shown in the figures.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Secondary Cells (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
EP11004144A 2011-05-19 2011-05-19 Stock de congélation doté d'une protection contre la sous-congélation Withdrawn EP2525172A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11004144A EP2525172A1 (fr) 2011-05-19 2011-05-19 Stock de congélation doté d'une protection contre la sous-congélation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11004144A EP2525172A1 (fr) 2011-05-19 2011-05-19 Stock de congélation doté d'une protection contre la sous-congélation

Publications (1)

Publication Number Publication Date
EP2525172A1 true EP2525172A1 (fr) 2012-11-21

Family

ID=44209551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11004144A Withdrawn EP2525172A1 (fr) 2011-05-19 2011-05-19 Stock de congélation doté d'une protection contre la sous-congélation

Country Status (1)

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EP (1) EP2525172A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584190A (en) * 1995-09-25 1996-12-17 Cole; Ronald A. Freezer with heated floor and refrigeration system therefor
WO2002004877A1 (fr) * 2000-07-06 2002-01-17 Schulak Edward R Systeme de transfert d'energie pour installations d'entreposage frigorifiques

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584190A (en) * 1995-09-25 1996-12-17 Cole; Ronald A. Freezer with heated floor and refrigeration system therefor
WO2002004877A1 (fr) * 2000-07-06 2002-01-17 Schulak Edward R Systeme de transfert d'energie pour installations d'entreposage frigorifiques

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