EP3076105B1 - Système de refroidissement - Google Patents

Système de refroidissement Download PDF

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Publication number
EP3076105B1
EP3076105B1 EP16155238.5A EP16155238A EP3076105B1 EP 3076105 B1 EP3076105 B1 EP 3076105B1 EP 16155238 A EP16155238 A EP 16155238A EP 3076105 B1 EP3076105 B1 EP 3076105B1
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EP
European Patent Office
Prior art keywords
cooling
coolant
conduit arrangement
line arrangement
cooling system
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.)
Active
Application number
EP16155238.5A
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German (de)
English (en)
Other versions
EP3076105A3 (fr
EP3076105A2 (fr
Inventor
Robert Brockmann
Gerd Odendahl
Benedikt Geitz
Manfred Vaupel
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.)
Viessmann Refrigeration Solutions GmbH
Original Assignee
Viessmann Refrigeration Solutions 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.)
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Publication date
Priority claimed from DE102015117948.2A external-priority patent/DE102015117948B4/de
Application filed by Viessmann Refrigeration Solutions GmbH filed Critical Viessmann Refrigeration Solutions GmbH
Priority to PL16155238T priority Critical patent/PL3076105T3/pl
Publication of EP3076105A2 publication Critical patent/EP3076105A2/fr
Publication of EP3076105A3 publication Critical patent/EP3076105A3/fr
Application granted granted Critical
Publication of EP3076105B1 publication Critical patent/EP3076105B1/fr
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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
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • 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
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/005—Devices using other cold materials; Devices using cold-storage bodies combined with heat exchangers
    • 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
    • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
    • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
    • F25D2303/082—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator
    • F25D2303/0822—Details of the element

Definitions

  • a cold store and a cooling system are described, a fluid being received in the cold store that can be cooled by a coolant.
  • the cooling system has at least one refrigeration machine, which is designed to cool the coolant and is coupled to the line system of the cooling system.
  • Cold accumulators are known from the prior art, which are designed, for example, as ice accumulators.
  • the coolant is passed through the ice store via a line arrangement.
  • the coolant that was cooled by a refrigeration machine is guided through the ice store in a first direction and fed to a cooling device with a consumer.
  • the coolant is then fed back to the refrigeration machine by the consumer, the process being repeated.
  • the coolant can be guided through the ice store in the opposite direction via a further line arrangement, the further line arrangement is arranged so that it leads through the ice store heated coolant via the consumer.
  • the ice contained in the ice store absorbs the heat contained in the coolant, so that the coolant is cooled and can be fed back to the consumer.
  • the pamphlet U.S. 5,944,089 A relates to thermal storage systems for buildings, the corresponding device and the method being designed to cool and / or heat a heat storage medium so that this medium can be reversibly transferred between the liquid phase and the solid phase without a complete discharge of the thermal storage system between the phase changes to need.
  • the pamphlet DE 20 2012 103 715 U1 describes a device for determining the state of charge of a thermal store, which can be detected by means of a measuring device.
  • This measuring device sits on the upper ceiling wall of the hermetically sealed space, which is part of the thermal store and in which a first line system and a phase change material surrounding the first line system are arranged.
  • the JP H11183012 a cooling method for an open refrigeration cabinet using propylene glycol, which is appropriately cooled in a tank via a compressor.
  • the task of the D3 is to increase the effectiveness of a cooling circuit by shortening the length of the individual tubes so that the overall structure is compressed.
  • the ice stores known from the prior art are designed in such a way that optimal regeneration of the ice store occurs.
  • the line arrangements are arranged within the ice bank in such a way that the coolant flows vertically through the ice bank.
  • the arrangement of the second line arrangement makes it possible that the coolant is not routed over several temperature layers within the cold store, but is only routed essentially within an area which has a certain temperature or a certain temperature range. Due to the vertical arrangement of the first line arrangement, it can be used to charge and regenerate the cold store, as is known from the prior art.
  • the horizontal arrangement of the second line arrangement allows a heated coolant to be conducted within the area of the fluid, which is, for example, 0 degrees Celsius.
  • the coolant guided in the second line arrangement is not guided through further temperature ranges of the fluid and can therefore essentially assume the temperature of the region in which the second line arrangement runs.
  • the second line arrangement can be arranged in an upper region of the storage space.
  • a certain temperature is set in the upper area of the cold store, for example an ice store. This temperature is maintained over a wide operating range of the cold store, regardless of whether or not ice has formed inside the cold store. This makes it possible to cool the coolant at a certain temperature even when the cold store is not or not fully loaded. Because the second line arrangement is arranged in the upper region of the storage space, the coolant also does not have to be routed over several temperature ranges within the storage space.
  • the cold store can have a third line arrangement which is arranged in the storage space, the third line arrangement being arranged such that coolant guided via the third line arrangement flows through the cold store vertically and in the opposite direction to the flow direction of the coolant guided in the first line arrangement. Further cooling of the coolant can be achieved via the third line arrangement, with targeted defrosting being possible analogously to the ice storage systems known from the prior art.
  • the cold store can also have a plurality of second line arrangements running parallel to one another.
  • the line arrangements can be arranged at different distances from one another within the storage space, so that the coolant can be cooled at different temperatures.
  • a second line arrangement of the second line arrangements can for example be arranged in a temperature range between 3 and 4 degrees Celsius and a third line arrangement of the second line arrangements can be arranged in a temperature range between 4 and 5 degrees Celsius.
  • the second line arrangements can be connected to a supply line of a cooling system via valves or other coupling devices.
  • the coolant can then be passed through one of the second line arrangements in order to bring the coolant to a corresponding temperature.
  • Both the first line arrangement and the at least one second line arrangement preferably have a speed-controlled pump in their respective flow sections which regulates the coolant flow in the respective line arrangements.
  • a speed-controlled pump can also be arranged in the third line arrangement.
  • the first line arrangement, the second line arrangement and / or the third line arrangement can have at least one heat exchanger and / or helically extending line sections.
  • the heat exchangers and / or helical line sections offer a large transition area for heat transfer between the fluid accommodated in the cold store and the coolant. In this way, the cooling of the coolant can be further improved. In addition, it is possible to load the cold store more quickly.
  • the fluid received in the storage space can be water.
  • a brine for example a water-glycol mixture, can also be guided in the line sections as the coolant.
  • defined temperature ranges are often set.
  • the water in the bottom area of the cold storage tank has a temperature of 4 degrees Celsius, since the water has its highest density at this temperature. In the upper area, the water is usually 0 degrees Celsius. If, with a conventional design of the cold accumulator, the coolant were to be cooled via vertically running line arrangements, it would be almost impossible - depending on the return temperature of the coolant - to bring the brine in the lines to 0 degrees Celsius.
  • the coolant is also passed through areas within the cold store that are warmer than 0 degrees Celsius.
  • the coolant can However, it can be brought to a temperature of 0 degrees Celsius in a targeted manner, since the coolant is routed via the second line arrangement, for example, only in the upper area within the cold store.
  • the temperature distribution mentioned above occurs in particular regardless of whether the ice store is almost completely loaded or almost completely discharged. Defined cooling of the coolant can therefore advantageously be achieved over a wide state of charge of the cold store.
  • storage elements which consist of a phase change material or have a phase change material can be accommodated in the storage space.
  • a phase change material for example, water or a brine can be used as the phase change material.
  • Such storage elements can be plates with openings, the fluid or water being able to flow through the openings as well as the line arrangements being guided.
  • the storage elements can also be spheres filled with phase change material.
  • the cold store is designed as an ice store.
  • the ice store is cooled for loading via the first line arrangement. This results in ice formation in the water, with defined temperature ranges being set within the ice store.
  • the first line arrangement, the second line arrangement and / or the third line arrangement can be coupled to the flow or return of the cooling system via valves.
  • the first line arrangement, the second line arrangement and the third line arrangement have a pump in their respective supply lines, via which the coolant is conducted from the supply or return line of the cooling system through the cold store will. Valves can accordingly be dispensed with in such designs.
  • the pumps control whether the cold store should be loaded or the cooling device should be cooled via the cold store.
  • the coolant is conducted from the return via the second line arrangement through the cold store when the refrigeration machine is not cooling the coolant.
  • this also means that the refrigeration machine is no longer operated or has to be operated when the cooling of the coolant takes place via the second line arrangement.
  • the refrigeration machine can be a heat pump, for example. If the heat pump is to cycle less rapidly or if it is not to be actively operated for a longer period of time, the coolant can only be guided through the cold store via the second line arrangement and thus effect cooling of the cooling device.
  • the coolant cooled via the second line arrangement and the cold accumulator is passed by a heat exchanger coupled to the heat pump, which connects the return of the cooling system, in particular the cooling device, with the flow of the cooling system, in particular the cooling device.
  • the coolant then has a temperature which is usually below the temperature which prevails in the return line.
  • a measuring device detects the temperature, with a regulation and control unit recognizing that it is not necessary to switch on the heat pump, since the temperature in the return is below a threshold value.
  • the cooled coolant is fed to the heat exchanger of the cooling device and heated via the flow of the cooling device or the cooling system.
  • the coolant is again guided through the cold store via the second line arrangement and cooled. This sequence can be carried out until the temperature rises, for example in the upper region of the cold storage, and thus also the temperature in the return line of the cooling system or the cooling device.
  • a sensor arrangement detects an increase in temperature and activates the heat pump so that the coolant is brought to a certain temperature via the heat exchanger of the heat pump.
  • the regulation and control unit provided for this then deactivates the pump arranged in the flow of the second line arrangement and activates the pump arranged in the flow of the first line arrangement, so that the coolant cooled by the heat pump flows through the first line arrangement and thus cools the cold store and then enters via the cold store the flow of the cooling device or the cooling system is introduced and reaches the heat exchanger of the cooling device.
  • the pumps arranged in the cooling system can preferably be speed-controlled pumps. This allows the operation of the pumps to be easily regulated and various mass flows to be set. In particular, valves can also be dispensed with by controlling the pumps.
  • the cooling device can be, for example, a cooling shelf which is provided for receiving and cooling goods such as dairy products, meat, poultry and / or fruit and vegetables.
  • the coolant is cooled by the heat pump and the cold store, preferably an ice store filled with water, is also cooled, ie loaded.
  • the cold store preferably an ice store filled with water
  • the low cooling capacity that is then required can be provided via the cold store, the coolant being guided via the second line arrangement, as stated above.
  • the temperature rise is detected by a sensor arrangement and transmitted to a control and regulating device, which then reactivates the heat pump.
  • the heat pump can also be operated at night, when cheaper electricity is available, until the cold store is fully charged. Subsequently, in daytime operation, when the electricity costs are significantly higher, the cooling device can be cooled essentially via the cold store. For this purpose, the coolant is guided within the cooling circuit of the cooling device or the cooling system via the second line arrangement.
  • the second line arrangement can be arranged in the upper area of the cold accumulator, and especially with water as the fluid for the cold accumulator, the temperature in the upper area of the cold accumulator remains constant over a wide load state of the cold accumulator, enables optimal and long-lasting cooling to be provided.
  • Fig. 1 shows a schematic representation of an ice store 10 of a first embodiment.
  • the ice store 10 has a housing 12.
  • the housing 12 also has a ceiling element.
  • the ceiling element is in Fig. 1 not shown.
  • a fluid 16 is received in the ice store 10.
  • the fluid 16 is preferably water. Further additives can be added to the water in order to influence certain properties of the water or to achieve certain properties of the fluid 16.
  • the housing 12 surrounds a storage space 14 in which a first line arrangement 18, a second line arrangement 20 and a third line arrangement 22 are arranged.
  • the first Line arrangement 18 is arranged in such a way that a coolant guided via first line arrangement 18 flows through storage space 14 and thus fluid 16 in the direction shown.
  • the coolant guided in the first line arrangement 18 flows vertically through two heat exchangers 30, it also being possible for the coolant to be guided over sections of the first line arrangement 18 parallel to the floor. If the coolant is conducted through the ice store 10 via the first line arrangement 18, a defined ice formation occurs in the storage space 14.
  • a coolant can be conducted in the opposite direction through the storage space 14 of the ice store 10 via the third line arrangement 22.
  • the first line arrangement is connected to a flow of a cooling system, so that cooled coolant flows through the ice store 10 in order to charge it, that is to say to cool it down.
  • the coolant passed through the ice store 10 absorbs heat.
  • a heated coolant is passed through the ice store 10 via the third line arrangement 22.
  • the heated coolant within the line of the third line arrangement 22 gives off heat to the fluid 16 or to the fluid 16 that has turned to ice, the coolant guided in the third line arrangement 22 being cooled.
  • heat exchangers 34 are provided in the third line arrangement 22, which provide a large heat transfer surface.
  • the third line arrangement 22 is connected downstream of a consumer in the return of a cooling system.
  • the first line arrangement and the third line arrangement in conventional ice storage systems are designed in such a way that the coolant guided therein flows vertically through the ice storage system. If the cold stored in the ice store is to be used to cool a coolant, it is passed through the ice store 10 via the third line arrangement 22. Due to the different temperature layers in areas 24, 26 and 28, however, the coolant cannot be optimally cooled. This is due to the fact that the coolant is also guided through temperature zones within the storage space 14 of the ice store 10 which are above a desired coolant temperature.
  • the reason for this is the vertical arrangement of the first line arrangement 18 and the third line arrangement 22.
  • the design of the first line arrangement 18 and the design of the third line arrangement 22, i. H. the vertical alignment advantageous in order to achieve a defined loading of the ice store 10 and a defined regeneration of the ice store 10.
  • the in Fig. 1 The ice store 10 shown is for optimal cooling of a coolant in the return line of a cooling system a second line arrangement 20 is arranged.
  • the second line arrangement 20, like the third line arrangement 22, is arranged in the return of a cooling system and a heated coolant that comes from a consumer in the cooling system can flow through it.
  • the second line arrangement 20 is arranged and designed in such a way that the coolant, which is guided through the second line arrangement 20, flows through the upper region 24 horizontally. In this area, the water or fluid 16 has a temperature of 0 degrees Celsius.
  • the coolant guided in the second line arrangement 20 can be cooled down to a greater extent, since the coolant does not pass through different temperature layers.
  • the second line arrangement 20 can also have a heat exchanger 32, which provides a large transfer surface for heat transfer.
  • the heat exchangers 30, 32 and 34 can be designed differently.
  • these heat exchangers 30, 32 and 34 are formed by line sections which extend helically over the entire surface of a side wall or over the base surface of the housing 12.
  • Fig. 2 shows a second embodiment of an ice storage system 10.
  • the in Fig. 2 The embodiment of the ice bank 10 shown differs from that in FIG Fig. 1 ice storage shown in that 14 storage elements 16 are arranged in the storage space.
  • the storage elements 16 have a plastic casing in which a brine is received.
  • the brine serves as a phase change material and stores cold, which is transmitted through the coolant conducted in the first line arrangement 18.
  • Fig. 3 shows an exemplary embodiment of a cooling system with an ice store 10.
  • the cooling system has a heat pump 46 which is provided for cooling a coolant.
  • the heat pump 46 has a compressor 48 and an expansion valve 50.
  • the construction and operation of a heat pump 46 are known from the prior art. Therefore it will not be discussed further.
  • the cold of the coolant cooled by the heat pump 46 is transferred via a heat exchanger 52 to a coolant which is used to cool a cooling device 38.
  • the cooling device 38 can be a cooling shelf which is set up to receive goods in a supermarket.
  • the goods include, for example, meat, sausage, poultry and / or fruit and vegetables.
  • the cooling device 38 has a cooling unit 40.
  • the cooling unit 40 has a heat exchanger 42, here in the example a plate-shaped heat exchanger 42, and a fan 44. Air is guided over the heat exchanger 42 via the fan 44, as a result of which the air is cooled. The cooled air is then circulated within the cooling device 38.
  • side walls of the cooling device 38 which surround a goods space, can also be cooled via the heat exchanger 42.
  • the heat exchanger 52 is connected to a flow 54 and a return 56 of the cooling device 38.
  • a pump 58 which serves as a feed pump for transporting the coolant guided in the cooling system, is arranged in the feed line 54.
  • the pump 58 is in particular a speed-controlled pump.
  • the pump 58 is arranged in the part of the cooling system which the coolant can supply a plurality of cooling devices 38.
  • Fig. 3 only a single cooling device 38 is shown and therefore the cooling circuit consisting of the flow 54 and the return 56 is simple. In further embodiments, however, a plurality of cooling devices 38 connected in parallel can be provided.
  • the coolant is then fed into a feed line of the corresponding cooling devices 38 via the pump 58.
  • the returns of the respective cooling devices 38 are then connected to one another via a common return line.
  • the flow 54 of the cooling system is the same as the flow 54 of the cooling device 38 and the return 56 of the cooling system is the same as the return 56 of the cooling device 38.
  • the cooling device 38 has a decentralized pump 62, which is also provided as a speed-controlled pump for pumping coolant.
  • the amount of coolant to be supplied to the cooling unit 40 can be controlled via the pump 62.
  • the pump 62 regulates the mass flow of the coolant within the cooling device 38.
  • the pump 58 regulates the mass flow within the cooling system.
  • the pump 58 could, for example, be dispensed with in such an embodiment.
  • the pump 62 enables a demand-dependent supply of coolant to the cooling unit 40.
  • the feed line 54 has a parallel flow path for the coolant, which is formed by the first line arrangement 18.
  • a pump 60 is arranged in the flow of the line arrangement 18.
  • the pump 60 is also a speed-controlled pump and regulates the mass flow and the flow of the coolant through the first Line arrangement 18.
  • the ice store 10 is correspondingly designed as that in FIG Fig. 1 shown ice bank.
  • a coolant is cooled via the heat pump 46, and thereby also the coolant conducted in the cooling system.
  • the coolant is circulated in the supply line 54 and in the return line 56 via the pumps 58 and 62.
  • the pump 60 is active and conducts coolant via the first line arrangement 18 through the ice store 18, so that the ice store 10 is charged.
  • the delivery rate of coolant can additionally be increased via the pump 62.
  • the coolant, which is conveyed via the pump 58, is divided into two flow paths.
  • a second line arrangement 20 and a third line arrangement 22 are arranged parallel to the return 56.
  • a pump 66 is arranged in the flow of the second line arrangement 20.
  • a pump 64 is arranged in the flow of the third line arrangement 22.
  • the pumps 60, 64 and 66 are also speed-controlled pumps and regulate the amount of coolant which is guided through the second line arrangement 20 or through the third line arrangement 22.
  • Fig. 4 shows the cooling system of Fig. 3 in a first mode of operation.
  • the arrows indicate the direction of flow of the coolant.
  • the coolant cooled by the heat pump 46 is fed within the feed line 54 via the pump 58 and the pump 60 to the first line arrangement 18.
  • the coolant flow is also deflected, as in FIG Fig. 4 shown can be achieved.
  • the distribution of the coolant flow depends on the delivery rate of the individual pumps 58, 60 and 62. If the delivery rate of the pump 62 were significantly higher than the delivery rate of the pump 60, a parallel flow through the bridged line section in the supply line 54 could result.
  • Fig. 4 shows the cooling system of Fig. 3 in a first mode of operation.
  • the arrows indicate the direction of flow of the coolant.
  • the coolant cooled by the heat pump 46 is fed within the feed line 54 via the pump 58 and the pump 60 to the first line arrangement 18.
  • the coolant flow is also deflected, as in FIG Fig. 4
  • the coolant flows through the first line arrangement 18 and cools the fluid 16 received in the storage space 14.
  • the coolant is then fed via the pump 62 to the cooling unit 40 and via the return 56 to the heat exchanger 52.
  • the coolant is cooled down again via the heat exchanger 52.
  • a second operating mode which is in Fig. 5 is shown, the coolant circulated in the supply line 54 and in the return line 56 for cooling the cooling unit 40 is not cooled via the heat exchanger 52, but rather via the “cold” stored in the ice store 10.
  • the pump 60 is deactivated so that no more coolant flows through the first line arrangement 18.
  • the coolant heated by the cooling unit 40 is guided in the return 56 via the second line arrangement 20 through the upper region 24 of the ice store 10.
  • the pump 66 is activated and thus conveys the heated coolant in the return 56 via the ice store 10.
  • the coolant that was cooled in the ice store 10 then flows again via the heat exchanger 52 and the flow line 54 directly to the cooling unit 40 takes place via the ice store 10, the coolant in the return before the heat exchanger 52 already has the required temperature, so that the heat pump 56 no longer needs to be operated to cool the coolant.
  • a temperature measuring device which detects the temperature of the coolant can be provided in the return 56.
  • the cooling system has measuring devices for detecting the temperature of the coolant at further points. This information is forwarded to a control and regulating unit for controlling the overall cooling system and / or to subordinate control and regulating units, such as for the cooling device 38, for example. These then regulate the coolant delivery by controlling the pumps 58, 60, 62, 64 and 66.
  • the heat pump 46 is activated again and the coolant is cooled via the heat exchanger 52.
  • the pumps 60 and 66 are then controlled in such a way that the coolant is fed to the first line arrangement 18 via the pump 60 so that the ice store 10 can be loaded and the pump 66 is deactivated so that no heated coolant flows through the second line arrangement 20 in the return 56 .
  • the flow of the coolant within the line arrangements 18, 20 and 22 as well as in the feed line 54 and 56 can take place solely by controlling the speed of the pumps 60, 62, 64 and 66.
  • the cooling device 38 shown additionally has a third line arrangement 22.
  • the function of the third line arrangement 22 has already been explained with reference to FIG Fig. 1 described.
  • the third line arrangement 22 is therefore to be regarded as optional.
  • the function of the third line arrangement 22 can also be taken over by the second line arrangement 20 alone.
  • a third line arrangement 22 can also be provided in order to achieve a defined regeneration, as already described in the prior art, can be carried out.
  • the arrangement of the second line arrangement 20 in the upper region 24 within the ice store 10 makes it possible, in the second operating mode, to bring the coolant essentially to the temperature that the fluid 16 has in the region 24. If the coolant in the return 56 were only to be routed via the third line arrangement 22 to cool the coolant, the coolant would also flow through the areas 26 and 28, which have higher temperatures than the area 24. As a result, the coolant is not cooled as much as it would be necessary to cool the cooling unit 40. As a result, in the prior art, a larger amount of coolant is passed through an ice store, which leads to faster discharging of the ice store and reduces the cycle times of heat pumps, which significantly increases energy costs. In the embodiment of the ice store 10 described here, however, a clocking of a heat pump for cooling the cooling unit 40 and for cooling the fluid 16 accommodated in the ice store 10 or the intervals between the switch-on times of the heat pump 46 can be reduced.
  • the cooling system described herein enables a cooling device 38 to be cooled inexpensively and efficiently.
  • the ice store 10 can be charged when the costs for the power supply for the operation of the heat pump 46 are low. This can be the case at night, for example. A cheap electricity tariff can also prevail during the day at certain times. Decisive for this is the electricity supply generated by renewable energies.
  • the in Fig. 5 shown Operating mode switched so that the heat pump is inactive. This can be carried out until the temperature in the return 56 upstream of the heat exchanger 52 exceeds a threshold value.
  • cooling devices 38 for supermarkets for cooling goods have closure devices with a roller blind.
  • the roller blind is lowered at night so that the goods space is closed and there is less heat transfer between the surroundings of the cooling device 38 and the goods space.
  • the coolant can, for example, be cooled to 0 degrees by being guided through the region 24 via the second line arrangement 20.
  • a third line arrangement 22 can be dispensed with.
  • An essential component is the second line arrangement 20, which extends horizontally in the upper region 24 of the storage space 14 and is located essentially within a temperature layer. This can be done by the second line arrangement 20 guided coolant can be brought to a defined temperature and does not flow through different temperature layers.

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (8)

  1. Système de refroidissement avec au moins
    a) un accumulateur de froid, présentant au moins
    - un logement (12) qui entoure un espace de stockage (14), dans lequel un fluide (16) est reçu dans l'espace de stockage (14),
    - un premier agencement de conduite (18) qui est agencé dans l'espace de stockage (14), dans lequel le premier agencement de conduite (18) est agencé de telle sorte qu'un agent de refroidissement acheminé via le premier agencement de conduite (18) traverse l'espace de stockage à la verticale,
    - un deuxième agencement de conduite (20) qui est agencé dans l'espace de stockage (14), dans lequel le deuxième agencement de conduite (20) est agencé de telle sorte qu'un agent de refroidissement acheminé via le deuxième agencement de conduite (20) traverse l'espace de stockage à l'horizontale, dans lequel le premier agencement de conduite (18), le deuxième agencement de conduite (20) et/ou un troisième agencement de conduite (22) sont reliés à un circuit de refroidissement dans lequel est agencé au moins un échangeur de chaleur (42), dans lequel
    - le premier agencement de conduite (18) est agencé, dans la direction d'écoulement d'agent de refroidissement, avant le au moins un échangeur de chaleur (42) dans l'arrivée (54) du circuit de refroidissement,
    - le deuxième agencement de conduite (20) est agencé, dans la direction d'écoulement d'agent de refroidissement, après le au moins un échangeur de chaleur (42) dans le retour (56) du circuit de refroidissement, et/ou
    - le troisième agencement de conduite (22) est agencé, dans la direction d'écoulement d'agent de refroidissement, après le au moins un échangeur de chaleur (42) dans le retour (56) du circuit de refroidissement, et
    b) au moins un équipement de refroidissement (38) avec au moins un échangeur de chaleur (42) pour refroidir des marchandises reçues dans un compartiment à marchandises et
    c) au moins une machine de refroidissement pour refroidir l'agent de refroidissement acheminé dans le circuit de refroidissement, dans lequel
    - le premier agencement de conduite (18) est couplé avec l'arrivée (54) du système de refroidissement,
    - le deuxième agencement de conduite (20) est couplé avec le retour (56) du système de refroidissement, et/ou
    - le troisième agencement de conduite (22) est couplé avec le retour (56) du système de refroidissement, et dans lequel
    - pour charger l'accumulateur de froid, l'agent de refroidissement est acheminé via le premier agencement de conduite (18),
    - pour refroidir l'équipement de refroidissement (38), l'agent de refroidissement est acheminé via le deuxième agencement de conduite (20) et/ou le troisième agencement de conduite (22), et
    - pour refroidir l'équipement de refroidissement (38), l'agent de refroidissement est acheminé via le deuxième agencement de conduite (20) lorsque la machine de refroidissement ne réalise aucun refroidissement de l'agent de refroidissement.
  2. Système de refroidissement selon la revendication 1, dans lequel le deuxième agencement de conduite (20) est agencé dans une zone supérieure (24) de l'espace de stockage (14).
  3. Système de refroidissement selon la revendication 1 ou 2, présentant un troisième agencement de conduite (22) qui est agencé dans l'espace de stockage (14), dans lequel le troisième agencement de conduite (22) est agencé de telle sorte qu'un agent de refroidissement acheminé via le troisième agencement de conduite (22) traverse l'espace de stockage à la verticale et à l'opposé de la direction d'écoulement de l'agent de refroidissement acheminé dans le premier agencement de conduite (18).
  4. Système de refroidissement selon l'une des revendications 1 à 3, présentant plusieurs deuxièmes agencements de conduite (20) se déroulant parallèlement les uns aux autres.
  5. Système de refroidissement selon l'une des revendications 1 à 4, dans lequel le premier agencement de conduite (18), le deuxième agencement de conduite (20) et/ou le troisième agencement de conduite (22) présentent au moins un échangeur de chaleur (30 ; 32 ; 34) et/ou des sections de conduite se déroulant en spirale.
  6. Système de refroidissement selon l'une des revendications 1 à 5, dans lequel le fluide (16) reçu dans l'espace de stockage (14) est de l'eau.
  7. Système de refroidissement selon l'une des revendications 1 à 6, dans lequel dans l'espace de stockage (14) sont reçus des éléments de stockage (36) qui sont composés d'un matériau à changement de phase ou présentent un matériau à changement de phase.
  8. Système de refroidissement selon l'une des revendications 1 à 7, dans lequel l'accumulateur de froid est conçu en tant qu'accumulateur de glace (10).
EP16155238.5A 2015-03-30 2016-02-11 Système de refroidissement Active EP3076105B1 (fr)

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PL16155238T PL3076105T3 (pl) 2015-03-30 2016-02-11 System chłodzenia

Applications Claiming Priority (2)

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DE102015104901 2015-03-30
DE102015117948.2A DE102015117948B4 (de) 2015-03-30 2015-10-21 Kältespeicher und Kühlsystem

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EP3076105A2 EP3076105A2 (fr) 2016-10-05
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EP3076105B1 true EP3076105B1 (fr) 2021-11-24

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787444A (en) * 1983-12-19 1988-11-29 Countryman James H Heating and cooling system
US5944089A (en) * 1994-05-26 1999-08-31 Roland; Russel Anthony Thermal storage systems for buildings
JPH11183012A (ja) * 1997-12-22 1999-07-06 Shinsei Reizou Kogyo Kk オープンショーケース、冷蔵庫等の冷蔵方法
JP3402271B2 (ja) * 1999-07-12 2003-05-06 ダイキン工業株式会社 冷凍装置
US6216486B1 (en) * 1999-09-24 2001-04-17 Baltimore Aircoil Company, Inc. Ice storage coil arrangement
FR2984470A1 (fr) * 2011-12-16 2013-06-21 Cheikh Moncef Ben Systeme de climatisation par stockage de froid a l'energie solaire
DE202012103715U1 (de) * 2012-09-27 2012-12-14 Viessmann Kältetechnik AG Einrichtung zur Bestimmung des Ladezustands eines thermischen Speichers

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EP3076105A3 (fr) 2016-12-07
ES2905089T3 (es) 2022-04-07
PL3076105T3 (pl) 2022-04-04
EP3076105A2 (fr) 2016-10-05
DK3076105T3 (da) 2022-02-14

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