EP3017238A1 - Dispositif de refroidissement d'un dissipateur avec un liquide surrefroidi dans un circuit de refroidissement - Google Patents

Dispositif de refroidissement d'un dissipateur avec un liquide surrefroidi dans un circuit de refroidissement

Info

Publication number
EP3017238A1
EP3017238A1 EP14736664.5A EP14736664A EP3017238A1 EP 3017238 A1 EP3017238 A1 EP 3017238A1 EP 14736664 A EP14736664 A EP 14736664A EP 3017238 A1 EP3017238 A1 EP 3017238A1
Authority
EP
European Patent Office
Prior art keywords
cooling
liquid
consumer
cooling circuit
subcooler
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.)
Granted
Application number
EP14736664.5A
Other languages
German (de)
English (en)
Other versions
EP3017238B1 (fr
Inventor
Friedhelm Herzog
Thomas Kutz
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.)
Messer Group GmbH
Original Assignee
Messer Group 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 Messer Group GmbH filed Critical Messer Group GmbH
Priority to PL14736664T priority Critical patent/PL3017238T3/pl
Publication of EP3017238A1 publication Critical patent/EP3017238A1/fr
Application granted granted Critical
Publication of EP3017238B1 publication Critical patent/EP3017238B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B19/00—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour
    • F25B19/005—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour the refrigerant being a liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/005—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure
    • F17C13/006—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure for Dewar vessels or cryostats
    • F17C13/007—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure for Dewar vessels or cryostats used for superconducting phenomena
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B19/00—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0169—Liquefied gas, e.g. LPG, GPL subcooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0107—Propulsion of the fluid by pressurising the ullage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0306—Heat exchange with the fluid by heating using the same fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0369—Localisation of heat exchange in or on a vessel
    • F17C2227/0374—Localisation of heat exchange in or on a vessel in the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/05—Improving chemical properties
    • F17C2260/056—Improving fluid characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/015—Purifying the fluid by separating
    • F17C2265/017—Purifying the fluid by separating different phases of a same fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/02—Mixing fluids
    • F17C2265/022—Mixing fluids identical fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use

Definitions

  • the invention relates to a device for cooling a consumer, with a consumer associated cooling circuit for circulating a cooling liquid, in which a pump and a subcooler is provided, wherein the subcooler via a equipped with a relief valve supply line with a storage tank for the cooling fluid flow connected to the container Including a cooling bath, a arranged on the container gas discharge line for discharging vaporized cooling liquid and immersed in the intended use of the device in the cooling bath and integrated into the cooling circuit heat exchanger.
  • Low-boiling liquefied gases such as, for example, liquid nitrogen, liquid oxygen or liquefied noble gases
  • liquid nitrogen, liquid oxygen or liquefied noble gases can only be kept liquid by means of particularly good insulation of the storage tanks and the pipelines. Even the slightest heat or frictional heat can lead to partial evaporation, depending on the boiling state. Through the partial evaporation collect
  • subcooling is understood as meaning the cooling of a liquid to a temperature below its boiling point at the respective pressure .
  • super cooling can be effected relatively easily in the case of relatively high-boiling liquefied gases, for example carbon dioxide or fluorinated hydrocarbons
  • the aggregates required for this purpose are very expensive to purchase and operate due to their high power requirements.
  • the device consists of a thermally insulated container in which a cooling bath taken from a liquefied cryogenic cooling medium and in the headspace of a gas outlet valve is arranged.
  • a heat exchanger through which the liquid to be undercooled flows, for example a cooling coil, is arranged.
  • To overcool the fluid ensure that the pressure across the cooling bath is less than the pressure within the cooling coil. Since the cooling bath is indeed in the boiling state, but its pressure is reduced compared to the pressure of the liquid to be undercooled, is his
  • Boiling temperature below the boiling point of the liquid to be supercooled which is thereby undercooled and liquefied within the already occurred gas bubbles.
  • Such a subcooler can now be used to cool a consumer by, for example, in a consumer assigned
  • Cooling circuit is installed. Through the subcooler the consumer is constantly supplied undercooled cooling liquid. With appropriate design, it is possible that removed during the supercooling of the cooling liquid heat the
  • Cooling circuits of this type should be equipped to compensate for density or volume fluctuations, especially in the case of an irregular heat input, with a surge tank in which above a level of the cooling liquid is a gas for pressure equalization.
  • a surge tank in which above a level of the cooling liquid is a gas for pressure equalization.
  • EP 1 355 1 14 A2 describes a closed cooling circuit for cooling components, such as, for example, high-temperature superconducting cables, with a cryogenic liquid as a coolant, in which a cooling circuit associated with the cooling circuit
  • Compensation vessel serves to keep the cooling circuit under an increased operating pressure of, for example, 2 bar to 20 bar and compensate for sudden gas formation in a closed circuit and leakage losses.
  • Equalizing vessel is connected directly to the cooling circuit and filled with the same cryogenic liquid that circulates in the cooling circuit.
  • the integrated in the cooling circuit expansion tank limits the possibilities and in particular the temperatures with which the cooling circuit can be operated.
  • the pressure equalization by means of vaporized succeeds
  • helium as pressure equalizing gas in the gas space of the
  • the invention is therefore based on the object to provide a device for cooling a consumer with a supercooled cooling liquid in a cooling circuit, in which a pressure compensation in the cooling circuit can be realized with simple means.
  • This object is in a device of the type mentioned and
  • flow-open connection line which is flow-connected to the storage tank and / or or leading to the cooling bath of the subcooler supply upstream to the expansion valve.
  • the device according to the invention thus comprises in a manner known per se a cooling circuit in which, in addition to the consumer, a pump for
  • cooling liquid Conveying the cooling liquid (the terms “cooling liquid” and “liquid cooling medium” are used synonymously below), as well as an upstream arranged to the consumer subcooler is provided.
  • cooling liquid Conveying the cooling liquid (the terms “cooling liquid” and “liquid cooling medium” are used synonymously below), as well as an upstream arranged to the consumer subcooler is provided.
  • the subcooler comprises a heat exchanger integrated in the cooling circuit through which the liquid cooling medium to be subcooled flows and which is accommodated in a cooling bath.
  • the cooling bath is in turn received in a pressure-tight and gas-tight container and consists of the same substance as the circulating in the cooling circuit cooling liquid, but is at a lower temperature than this.
  • the pressure of the gas phase above the cooling bath is adjusted by a gas discharge, namely to a value (hereinafter referred to as "target pressure"), in which the boiling temperature of the cooling liquid in the cooling bath below the boiling temperature of the cooling liquid
  • target pressure a value (hereinafter referred to as "target pressure"
  • the cooling liquid in the cooling circuit is brought to a temperature below its boiling point (hereinafter "target temperature” called.)
  • target temperature a temperature below its boiling point
  • Target temperature is determined essentially by the heat input by the consumer, the pump and the lines of the cooling circuit, and can be controlled in particular depending on the heat input. To the occurring due to the heat input to the heat exchanger loss
  • the pressure vessel receiving the cooling bath is in fluid communication with a storage tank for cooling liquid.
  • the liquid supply line connecting the sump of the storage tank with the cooling bath is equipped with an expansion valve, which ensures that the
  • the liquid cooling medium used is preferably a cryogenic liquefied gas, for example liquid nitrogen or a liquefied inert gas.
  • the storage tank itself is used according to the invention.
  • the storage tank is stromungsverbunden with the cooling circuit via a connecting line, which branches off from the liquid supply upstream to the expansion valve and during the
  • the connecting line opens into the Storage tank itself or in the storage tank connected to the cooling bath in the subcooler liquid supply, in each case upstream to
  • cooling liquid can flow from the storage tank into the cooling circuit or flow out of it into the storage tank in this manner, without this significantly affecting the pressure conditions in the region of the cooling bath.
  • the actual pressure equalization takes place via the gas phase present in the storage tank above the cooling liquid. In particular, if in the storage tank in comparison to the volume of the
  • Cooling circuit is maintained large volume of cooling liquid, prevents the amount of cooling liquid in the storage tank and its hydrostatic pressure that flows through the connecting line in the bottom of the storage tank
  • the pressure in the storage container can be kept at a predetermined pressure by means of a pressure build-up evaporator, for example an air evaporator, connected to the storage tank.
  • a pressure build-up evaporator for example an air evaporator
  • Cooling device over cooling circuits simplified according to the prior art and the energy loss caused by the heat input into the surge tank is avoided.
  • a second subcooler Connecting line in the liquid supply line, a second subcooler arranged.
  • the second subcooler prevents more than just an insignificant part of the liquid cooling medium from reaching the expansion valve in the gaseous state, which adversely affects the functioning of the expansion valve and also the functionality of the first subcooler
  • main subcooler (hereinafter referred to as "main subcooler")
  • Subcooler for example, an object is used in which a transporting the medium to be subcooled conduit passed through a cooling bath and is thermally connected to this, the temperature of which is lower than the medium guided through the conduit.
  • a phase separator is provided in the supply line, upstream of the expansion valve and downstream of the branch line.
  • a phase separator serves a container to which the medium to be separated is supplied and in which the medium in a collecting at the bottom of the container liquid phase (which is then forwarded to the subcooler) and an overlying gas phase (the deducted and possibly one used for other purposes) separates.
  • the phase separator is used in particular to flash gas from the connecting line in the liquid feed line to the cooling bath of the
  • phase separator can also be used for precooling the cooling medium supplied to the main subcooler.
  • another expansion valve is arranged upstream of the phase separator, but downstream of the branch of the connection line, and the
  • Phase separator is operated at a lower pressure than the pressure in the sump of the storage tank, for example, without pressure (1 bar).
  • the additional subcooler or the additional phase separator relieve the main subcooler and reduce the consumption of cooling medium, especially when a particularly low cooling temperature is to be achieved by applying a reduced pressure (p ⁇ 1 bar) in the cooling bath of the main subcooler.
  • the connecting line can flow into the cooling circuit at any point in the cooling circuit, but preferably flows into the cooling circuit upstream of the subcooler in order to minimize the temperature influences of the subcooler on the storage tank.
  • the connecting line flows particularly downstream to the consumer, but upstream into the cooling circuit into the pump.
  • gas discharge line is equipped with a vacuum pump. In this way, the target pressure in the pressure bath receiving the cooling bath can be set below the value
  • the storage tank is equipped with a pressure build-up evaporator, for example an air evaporator. This will be a
  • a yet further preferred embodiment of the invention is characterized in that by means of a measuring and control device, the temperature of the cooling bath in dependence on the heat input in the cooling circuit is adjustable.
  • the temperature of the cooling liquid in the cooling circuit is detected continuously or at predetermined time intervals, and the determined values are fed to a control unit and compared with a desired value of the temperature. Subsequently, the pressure in the cooling bath receiving pressure vessel by readjustment of the
  • the device according to the invention is particularly suitable for cooling a superconducting, in particular high-temperature superconducting, component.
  • the consumer integrated in the cooling circuit is thus a superconducting component, for example a superconducting cable or a superconducting magnet.
  • a superconducting component for example a superconducting cable or a superconducting magnet.
  • Such superconducting components must be to achieve and maintain the
  • the superconducting member is cooled, for example, by means of liquid nitrogen, liquid helium or other liquefied gas.
  • the superconducting components carry virtually no heat into the cooling medium, so they are particularly well suited for cooling by means of a subcooled liquid circulating in a cooling circuit.
  • liquid nitrogen is used as the cooling medium which circulates at a pressure of 8 to 10 bar in the cooling circuit.
  • Cooling circuit arranged subcooler the nitrogen is at a temperature of -206 ° C brought. After passing through the consumer and the pump, it has a temperature of -200 ° C at the inlet of the subcooler.
  • Temperature difference corresponding heat is removed from the liquid nitrogen by the pressure in the cooling bath of the subcooler is brought by means of a vacuum pump to a value of, for example, between 0.15 and 0.2 bar.
  • the pressure in the cooling circuit corresponds to the pressure at the bottom of the reservoir, so that the reservoir can be used according to the invention as a surge tank.
  • Fig. 1 The circuit diagram of a device according to the invention in a first
  • Fig. 2 The circuit diagram of a device according to the invention in a second
  • Fig. 3 The circuit diagram of a device according to the invention in the third first
  • the device 1 shown in Figure 1 comprises a cooling circuit 2 for cooling a consumer, not shown here, for example, a superconducting cable or magnet.
  • the cooling circuit 2 comprises a feed line 3 for introducing a liquid cooling medium, in particular a cryogenic cooling medium such as
  • liquid nitrogen LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for example, liquid nitrogen, LNG or a liquefied noble gas, for
  • a subcooler 6 Downstream of the pump 5, a subcooler 6 is arranged in the flow line.
  • the subcooler 6 comprises a pressure vessel 7 in which a cooling bath 8 is accommodated is.
  • the feed line 3 passed through the pressure vessel 7 emerges with a heat exchanger, for example a cooling coil 9.
  • a feed line 12 connected to the sump of a storage tank 11, for example a standing tank, opens into the pressure vessel 7.
  • the pressure in the storage tank 1 1 is held via a tank pressure control, for example, including an air evaporator 13 to a predetermined value.
  • an expansion valve 14 is arranged, by means of which a maximum pressure in the supply line 12 downstream of the expansion valve 14 is adjustable.
  • a gas discharge line 15 in which - optionally - a vacuum pump 16 is integrated.
  • the cooling circuit 2 and the flow-connected to the storage tank 1 1 valves are not independent of each other, but coupled via a connecting line 1 7 between a branch point 18 upstream to the expansion valve and a branch point 19 upstream of the pump 5, a flow connection between the supply line 12 and the cooling circuit 2 produces.
  • Cooling circuit 2 The pressure in the cooling circuit 2 substantially corresponds to the pressure at the bottom of the storage tank 1 1, thus has a boiling temperature which is higher than that prevailing at the liquid surface in the storage tank 1 1
  • the cooling medium is supplied to a consumer via the supply line 3 in the supercooled state, and by
  • the cooling medium in the flow line 3 by means of the subcooler 6 to a predetermined temperature of, for example, 5 K to 10 K. cooled below its boiling point.
  • the "predetermined temperature” is selected such that the total heat input in the cooling circuit 2 is not sufficient or at most sufficient to heat the supercooled cooling medium to its boiling temperature. so that the boiling temperature at the pressure present in the pressure vessel 7 is below the predetermined temperature of the cooling medium in the flow line 3.
  • the required pressure is at
  • Relaxation valve 14 is set; If necessary, the pressure can be reduced by the use of the vacuum pump 16 to a pressure of less than 1 bar.
  • the gas discharged via the gas discharge line 15 is discharged into the environment or fed to a further use.
  • the pressure in the pressure vessel 7 is regulated as a function of a measured temperature of the cooling medium in the flow line 3.
  • a compensation volume is required. As such a compensating volume is used in the device 1, the storage tank 1 1, as over the during operation of the
  • Cooling circuit 2 assigned separate compensating vessel. Since the branch point 18 is arranged in the supply line 12 upstream of the expansion valve 14, and the expansion valve 14 regulates to a predetermined final pressure, pressure fluctuations occurring in the cooling circuit 2 do not lead to a significant influence on the pressure conditions in the container. 7
  • the device 20 shown in Fig. 2 differs from the device 1 only by an additional subcooler 21, which is arranged in the supply line 12 upstream of the expansion valve 14.
  • the subcooler 21 has a heat exchanger 22, which is accommodated in a cooling bath 23.
  • the cooling bath 23 is also fed from the storage tank 1 1, but an expansion valve 24 ensures that the pressure in the cooling bath 23 is lower than in the conduit 12, and that the temperature of the cooling bath 23 is lower than the temperature of the cooling medium flowing through the heat exchanger 22.
  • phase separator 26 is located in the supply line 12, upstream of the expansion valve 14, and another expansion valve 27 upstream of the latter.
  • the phase separator comprises a vessel 28 in which gaseous cooling medium flows upstream of the phase separator 26 was formed by evaporation of liquid cooling medium and / or was entered from the cooling circuit 2 via the connecting line 19, in one
  • Gas phase 29 collects in the phase separator 26, while the left in the liquid state cooling medium in the phase separator 26 forms a liquid phase 30.
  • the liquid phase 30 is fluidly connected to the subcooler 6 via the section of the supply line 12 located downstream of the phase separator 26, while gas can be removed from the gas phase 29 via a gas discharge line 31 connected to the gas phase 29.
  • Cooling medium can be used by the gas phase 29 is maintained during operation at a lower pressure than the pressure at the bottom of the storage tank 1 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Selon l'état de la technique, un fluide liquide surrefroidi, par exemple de l'azote liquide surrefroidi, est pompé à travers un surrefroidisseur et ainsi refroidi par l'évaporation sous vide partiel du même fluide . L'azote ainsi surrefroidi est ensuite utilisé comme fluide frigorigène pour refroidir un dissipateur. Si le dissipateur ne délivre que peu de chaleur à l'azote, le fluide liquide peut être envoyé dans le circuit dans lequel le surrefroidisseur est placé. Pour compenser les variations de volume, un tel circuit nécessite un vase d'expansion qui est cependant très coûteux et qui ne peut en outre fonctionner, dans le cas de fluides surrefroidis, que lorsqu'une partie du fluide est chauffée par un apport d'énergie ou lorsqu'il faut utiliser comme fluide de compensation de pression un gaz inerte qui bout à des températures très basses. Selon l'invention, le réservoir d'alimentation en fluide liquide est intégré dans le circuit de refroidissement et utilisé comme vase d'expansion. Cela permet de s'affranchir de l'utilisation d'un vase d'expansion séparé.
EP14736664.5A 2013-07-04 2014-06-18 Dispositif de refroidissement d'un dissipateur avec un liquide surrefroidi dans un circuit de refroidissement Active EP3017238B1 (fr)

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PL14736664T PL3017238T3 (pl) 2013-07-04 2014-06-18 Urządzenie do chłodzenia odbiornika za pomocą przechłodzonej cieczy w obiegu chłodzenia

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DE102013011212.5A DE102013011212B4 (de) 2013-07-04 2013-07-04 Vorrichtung zum Kühlen eines Verbrauchers mit einer unterkühlten Flüssigkeit in einem Kühlkreislauf
PCT/EP2014/062881 WO2015000708A1 (fr) 2013-07-04 2014-06-18 Dispositif de refroidissement d'un dissipateur avec un liquide surrefroidi dans un circuit de refroidissement

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US (1) US10422554B2 (fr)
EP (1) EP3017238B1 (fr)
JP (1) JP6349390B2 (fr)
KR (1) KR102053387B1 (fr)
CN (1) CN105324601B (fr)
CA (1) CA2917035C (fr)
DE (1) DE102013011212B4 (fr)
ES (1) ES2842104T3 (fr)
IL (1) IL243118B (fr)
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CA2917035A1 (fr) 2015-01-08
SG11201509973RA (en) 2016-01-28
ES2842104T3 (es) 2021-07-12
CN105324601A (zh) 2016-02-10
JP6349390B2 (ja) 2018-06-27
DE102013011212B4 (de) 2015-07-30
RU2015154453A (ru) 2017-08-07
CN105324601B (zh) 2017-02-08
US20160370036A1 (en) 2016-12-22
KR20160030192A (ko) 2016-03-16
IL243118B (en) 2020-03-31
RU2648312C2 (ru) 2018-03-23
EP3017238B1 (fr) 2020-11-04
WO2015000708A1 (fr) 2015-01-08
JP2016524117A (ja) 2016-08-12
US10422554B2 (en) 2019-09-24
RU2015154453A3 (fr) 2018-03-01
CA2917035C (fr) 2021-04-06
DE102013011212A1 (de) 2015-01-08
KR102053387B1 (ko) 2020-01-08
PL3017238T3 (pl) 2021-04-19

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