US20130055728A1 - Refrigeration Vehicle and Method for Cooling its Refrigeration Space Using a Low-Temperature-Liquefied Combustible Gas - Google Patents

Refrigeration Vehicle and Method for Cooling its Refrigeration Space Using a Low-Temperature-Liquefied Combustible Gas Download PDF

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Publication number
US20130055728A1
US20130055728A1 US13/697,948 US201113697948A US2013055728A1 US 20130055728 A1 US20130055728 A1 US 20130055728A1 US 201113697948 A US201113697948 A US 201113697948A US 2013055728 A1 US2013055728 A1 US 2013055728A1
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United States
Prior art keywords
refrigeration
vehicle
combustible gas
heat exchanger
low
Prior art date
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Abandoned
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US13/697,948
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English (en)
Inventor
Franz Lurken
Helmut Henrich
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Application filed by LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Assigned to L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HENRICH, HELMUT, LURKEN, FRANZ
Publication of US20130055728A1 publication Critical patent/US20130055728A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3202—Cooling devices using evaporation, i.e. not including a compressor, e.g. involving fuel or water evaporation
    • 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
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • 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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0308—Radiation shield
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0149—Vessel mounted inside another one
    • 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
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • 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
    • F17C2221/03—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
    • 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
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another 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
    • 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
    • F17C2227/0376—Localisation of heat exchange in or on a vessel in wall contact
    • F17C2227/0379—Localisation of heat exchange in or on a vessel in wall contact inside the vessel
    • 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
    • F17C2227/0376—Localisation of heat exchange in or on a vessel in wall contact
    • F17C2227/0383—Localisation of heat exchange in or on a vessel in wall contact outside the vessel
    • 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
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser
    • 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
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0395—Localisation of heat exchange separate using a submerged heat exchanger
    • 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
    • F17C2250/043—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
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0631—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
    • F17C2250/0636—Flow or movement of content
    • 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
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • 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
    • F17C2265/025—Mixing fluids different fluids
    • 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
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/033—Treating the boil-off by recovery with cooling
    • 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
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0134—Applications for fluid transport or storage placed above the ground
    • F17C2270/0136—Terminals
    • 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
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • 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
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0171—Trucks

Definitions

  • the present invention relates to a refrigeration vehicle with at least one refrigeration space and a method for cooling the refrigeration spaces using a low-temperature-liquefied combustible gas, in particular natural gas.
  • the refrigeration space is cooled conventionally, in which case the conventional cooling engine may, in turn, be driven by natural gas.
  • the natural gas itself needs to be conducted all the way from a natural gas tank mostly close to the combustion engine to the cooling unit, usually arranged in or close to the refrigeration space, which implies risks according to the flammable properties of the natural gas in case of defects like leakages in the supplying fuel lines.
  • the use of such a cooling method in a trailer truck is only applicable quite limited, because no appropriate, workable systems for disconnecting fuel lines, which would be necessary in case of decoupling a trailer from a tractor, are available. Therefore the refrigeration space of a trailer in a trailer truck usually is cooled by liquid nitrogen or by conventional compressor cooling methods solely, even if the tractor is driven by natural gas.
  • the natural gas is carried, either under pressure or in low temperature liquefied form, in special storage tanks in the motor vehicle.
  • the liquid natural gas has a temperature of at most ⁇ 161° C. at atmospheric pressure, and part of the natural gas may constantly evaporate on account of the heat supplied by the surroundings. Evaporation is undesirable, especially when the motor vehicle is not in operation.
  • the gaseous part of the natural gas mainly contains the more volatile constituents of the gas which have a higher vapour pressure or a lower boiling temperature.
  • the extraction of part of the natural gas present in gaseous form in the storage tank leads, in the long term, to an enrichment of higher hydrocarbons, in particular propane, in the low temperature liquefied part of the natural gas.
  • the high propane gas fraction may be harmful for an internal combustion engines, when later supplied to it.
  • the mixture composition changes with time, this being undesirable.
  • the higher hydrocarbons may also freeze out of the solution.
  • the object of the present invention is to at least partially solve the problems known from the prior art and, in particular, to specify a refrigeration vehicle and a method, which make it possible to cool a refrigeration space of a trailer truck powered by a low-temperature liquefied combustible gas by utilizing the cold of the stored gas. Moreover a device which makes it possible to store combustible gases at low temperature, without evaporating fractions of these being discharged into the atmosphere is specified. Thus, in particular, low temperature liquefied combustible natural gas is to be used for cooling and simultaneously stored and transported more efficiently.
  • a Refrigeration vehicle comprises at least one refrigeration space, which can be cooled via at least one supplemental heat exchanger, wherein the supplemental heat exchanger in the refrigeration space is connected to other components establishing a heat exchange loop being able to exchange heat with an evaporator for low-temperature liquefied combustible gas.
  • the heat extracted from the refrigeration space via the supplemental heat exchanger is conducted to the evaporator for evaporating the low-temperature liquefied combustible gas, especially liquefied natural gas.
  • the supplemental heat exchanger is connected to the other components of the heat exchange loop via couplings and flexible lines.
  • a supplemental heat exchange loop is in particular advantageous for safety reasons.
  • it is known to conduct a fluid combustible gas through an evaporator located in the refrigeration space for extracting its heat. This method is practicable and efficient, but bears risks in case of a leakage, as combustible gas then possibly enters the refrigeration space.
  • An evaporator outside the refrigeration space connected to a heat exchange loop, which transports the heat from the refrigeration space to the evaporator, can completely avoid the risk that combustible gas enters the refrigeration space in case of any leakage or other failure of the system. Moreover it even allows a more flexible local arrangement of the evaporator and shorter fuel supply lines.
  • the refrigeration vehicle comprises at least one first vehicle part, which comprises a motor tractor, and one second vehicle part.
  • the vehicle parts can be divided in that the flexible lines and the couplings form two detachable connections between the two vehicle parts.
  • the evaporator for the low-temperature liquefied combustible gas is arranged on the first vehicle part.
  • the second vehicle part comprises a refrigeration space and a corresponding supplemental heat exchanger.
  • the second vehicle part may in particular be a semi-trailer generating a trailer truck in combination with the first vehicle part being a motor tractor.
  • the first vehicle part comprises a fuel tank for low-temperature liquefied combustible gas, in particular natural gas, and an internal combustion engine, which can be operated with combustible gas.
  • the low-temperature liquefied combustible gas is conducted to an evaporator for evaporation, which is connected via fuel lines to the internal combustion engine on the one hand and to the fuel tank on the other hand.
  • the low-temperature liquefied combustible gas is supplied to the internal combustion engine via a fuel pump and fuel.
  • the heat required for the evaporation is hereby extracted from the refrigeration space via the heat exchange loop.
  • Combustion engines being operated with natural gas as fuel are already available and used in trailer trucks.
  • the gas is stored in the gaseous phase, which is, even if stored under pressure, disadvantageous according to the amount of fuel that can be carried and therefore the operating distance of the vehicle is limited.
  • the operating distance can be improved by transporting the gas in the liquid phase.
  • Such motor tractors are available in the market.
  • the energy inserted for the liquefication of the combustible gas is basically wasted, as long the cold included within the fluid combustible gas for storage is unemployed lost:
  • the boiling temperature of natural gas under atmospheric pressure is ⁇ 161° C. and it needs to be stored in special cryogenic tanks below this temperature, providing a significant, potentially exploitable amount of cold.
  • the fluid combustible gas needs to be evaporated and warmed in an evaporator for being suitable for combustion.
  • This cold might be used for cooling a refrigeration space by operating an evaporator located in the refrigeration space.
  • this arrangement can only be used in a refrigeration vehicle, wherein the refrigeration space, the evaporator and the internal combustion engine are all located at the same vehicle part without the possibility of separation.
  • the trailer has to comprise its own, additional cooling system, as long as no safe couplings for fluid combustible gas are available. Therefore the refrigeration vehicle according to the invention creates the possibility for constructing a refrigeration vehicle, wherein the energy for evaporating the combustible gas is extracted from a refrigeration space and the mentioned techniques for operating a refrigeration vehicle can be combined, while their intrinsic disadvantages are avoided.
  • the ability of the supplemental heat exchange loop to be dividable into two parts as mentioned via the couplings in the flexible lines is hence in particular important for long way transportation of chilled and frozen goods.
  • trailer trucks are used for the distribution, wherein the refrigeration space is located on the trailer and the evaporator is installed on the truck.
  • the invention of course is not only suitable for long way transportation; also in the local distribution of goods such trailer trucks are commonly used.
  • the combustible gas can thus be employed both for cooling a refrigeration space and for operating an internal combustion engine.
  • the low-temperature liquefied gas is first employed, during phase transformation, for cooling the refrigeration space, before it is supplied to the internal combustion engine.
  • the heat exchange loop comprises a first heat exchanger, which is arranged in the refrigeration vehicle in such a way, that the first heat exchanger is able to exchange heat with the evaporator and that the first heat exchanger is connected to the supplemental heat exchanger in the refrigeration space via the flexible lines.
  • the heat which is extracted from the refrigeration space via the supplemental heat exchanger, is transmitted to a coolant in the heat exchange loop before being conducted to the first heat exchanger, using a coolant pump for transporting the coolant, and being transmitted to the evaporator via the first heat exchanger.
  • the coolant is used as heat transfer medium, which preferably still remains flowable even at temperatures of liquid combustible gas and has a boiling point of markedly above 50° C.
  • the lowest temperature at which the coolant is still to be usable is determined by the lowest temperature within the heat exchange loop to prevent freezing of the coolant and therefore avoid blockage of the loop.
  • the heat transfer medium used as coolant is mostly commercially available oils and the like. The circulation of the coolant is ensured by operating a coolant pump.
  • the coolant pump is directly operated by the internal combustion engine via a mechanic pump drive, for example a vee-belt.
  • a mechanic pump drive for example a vee-belt.
  • This way of operating the coolant pump is in particular very energy and cost effective, as a direct, mechanic connection between the combustion engine of the vehicle and the pump is very solid, long-living, requires low maintenance efforts and energy losses are notably reduced in comparison with a pump being operated by an electric motor.
  • Another advantage of the direct mechanic connection between the pump and the engine is, that this ensures a working coolant pump when it is required, thus at times when the internal combustion engine is in operation, because then evaporation of the low-temperature liquefied combustible gas and therefore a heat transfer from the refrigeration space to the evaporator is necessary.
  • no supplemental components like an electric motor, its energy supply and the corresponding periphery elements need to be installed on the vehicle.
  • a closable air flap for supplying the evaporator with additional ambient air for evaporating the low-temperature liquefied combustible gas is installed on the refrigeration vehicle. Once the set temperature in the refrigeration space is reached, there might not be a sufficient supply of heat to the evaporator via the heat exchange loop to ensure adequate evaporation of the low-temperature liquefied gas before it is supplied to the internal combustion engine, which might lead to damages in the combustion engine. In this case the required heat can be supplied through a closable air flap, conducting ambient, warm air to the evaporator.
  • the closable air flap might be located close to the internal combustion engine, using its rejected heat for warming up the air which is afterwards conducted to the evaporator for increasing effectiveness of the evaporation process, as the evaporation becomes more effective if the temperature gradient between the liquefied gas and the supplied heat is enhanced.
  • the air flap can be opened to deliver heat from the internal combustion engine to the first heat exchanger if the refrigeration space has to be heated. This case might occur in winter, when the ambient temperature is lower than the required set temperature in the refrigeration space. For example, if transportation of chilled food requiring a temperature above 0° C. is carried out and the ambient temperature is below this value.
  • a regulation unit being connected to the mentioned elements of the heat exchange loop and to corresponding sensors will be installed on the vehicle for controlling the different modes of operation and to ensure a sufficient supply of heat or cold to the refrigeration space and a sufficient amount of heat to the evaporator to avoid applying fluid combustible gas to the internal combustion engine.
  • the refrigeration vehicle comprises in addition a bypass connection and a bypass valve being arranged such that the supplemental heat exchanger is bypassed by opening the bypass valve, when the refrigeration space does not require any cooling because its set temperature is reached.
  • the bypass valve is also opened, if the two vehicle parts are disconnected and thus the corresponding couplings between the vehicle parts are detached.
  • the heat required for the evaporation of the low-temperature liquefied combustible gas in the evaporator is in this case supplied by air being conducted through the closeable air flap.
  • freezing of the first heat exchanger which might occur if not enough coldness is taken for being conducted to the refrigeration space, is avoided, because it is warmed by the air delivered by opening the air flap.
  • a regulation unit might be installed, which opens and closes the valves with respect to the required mode of operation.
  • the refrigeration vehicle moreover comprises a first nitrogen tank for liquid nitrogen, nitrogen lines, a nitrogen pump, a nitrogen outlet and a nitrogen heat exchanger arranged in a refrigeration unit together with the supplemental heat exchanger enabling indirect cooling of the refrigeration space via liquid nitrogen, in particular when the combustion engine is not operated and the refrigeration vehicle is at a standstill.
  • the liquid nitrogen might be used for cooling the refrigeration space, either in combination with the natural gas cooling mode or individually.
  • Common techniques for nitrogen cooling might be practiced; in particular it is preferred to use indirect cooling methods, whereby heat is extracted via a to nitrogen heat exchanger from the refrigeration space.
  • the nitrogen and/or the combustible gas depending on the current circumstances, is employed for cooling a refrigeration space, higher energy efficiency in the use of low temperature liquefied combustible gases and of liquid nitrogen is achieved. If the low temperature liquefied combustible gas has to be present in gaseous form for further use, the evaporation energy can be employed in the phase transformation from liquid to gaseous in order to cool a refrigeration space.
  • the liquid nitrogen may be employed for cooling the refrigeration space.
  • nitrogen can be discharged harmlessly into the environment, in contrast to most combustible gases.
  • a synergy effect is achieved by the coordinated use of both gases for cooling a refrigeration space depending on the outer circumstances.
  • the low temperature liquefied combustible gas is extracted from the fuel tank from the liquid phase, is first initially evaporated, employed for cooling the refrigeration space and is supplied only thereafter to the internal combustion engine.
  • less or no liquid nitrogen has to be supplied to the refrigeration space, with the result that the efficiency of the refrigeration vehicle is further increased.
  • a cooling of the refrigeration space by low-temperature liquefied combustible gas and liquid nitrogen is also possible, depending on the refrigeration requirements.
  • the liquid nitrogen may be employed, as required, for cooling the refrigeration space, especially at times when the refrigeration vehicle is not being moved, but the refrigeration space is to be cooled.
  • only nitrogen is employed for cooling the refrigeration space and is conducted into the atmosphere.
  • a boil-off device is located on the refrigeration vehicle, for joint storage and/or transportation of low-temperature liquefied combustible gas and liquid nitrogen.
  • the boil-off device comprises a fuel tank for low-temperature liquefied combustible gas, a second nitrogen tank for liquid nitrogen and a heat-transmitting connection element between the fuel tank and the second nitrogen tank, which is designed in such a way, that the combustible gas in the fuel tank can be cooled or kept cool directly or indirectly by the liquid nitrogen.
  • Liquid nitrogen has a boiling temperature of at most ⁇ 196° C. at normal pressure and can therefore cool low-temperature liquefied combustible gas in the liquid phase having a higher boiling temperature of all the constituents than ⁇ 196° C.
  • liquid and/or gaseous nitrogen or a heat transfer medium is supplied in a pipeline system to the low temperature liquefied combustible gas, so that heat transmission takes place indirectly via the pipeline system.
  • the direct or indirect cooling prevents the low temperature liquefied combustible gas from evaporating unintentionally due to the supply of heat from the surroundings. Loss free storage of a low temperature liquefied combustible gas is thus made possible. This affords the further advantage that the low temperature liquefied combustible gas preserves its composition of different components and is not enriched with less volatile constituents which have a higher boiling point.
  • the low temperature liquefied combustible gas is constantly cooled so that the low temperature liquefied combustible gas does not evaporate due to the additional introduction of heat from the surroundings. Owing to the transmission of heat from the low temperature liquefied combustible gas to the liquid nitrogen, only the latter evaporates and is at least partially in gaseous form.
  • the still cold gaseous nitrogen may be employed for cooling further refrigeration spaces and may subsequently be routed to the atmosphere or employed elsewhere, for example for inertization. It is perfectly safe to discharge nitrogen into the free ambient air.
  • FIG. 1 shows schematically an embodiment of the invention in a refrigeration trailer truck.
  • FIG. 1 shows a refrigeration vehicle 1 comprising a first vehicle part 2 , being a motor tractor, and a second vehicle part 3 , being is a semi-trailer, which can be separated.
  • the first vehicle part 2 comprises a fuel tank 7 for low-temperature liquefied combustible gas LNG, preferably natural gas.
  • the low-temperature liquefied combustible gas LNG can be conducted via fuel lines 9 and a fuel pump 8 into an evaporator to for evaporating. After a phase transition in the evaporator to the now gaseous combustible gas can be conducted into an internal combustion engine 4 , which can be operated with combustible gas.
  • the second vehicle part 3 comprises a refrigeration space 5 , which can be cooled by a refrigeration unit 6 , composed of a supplemental heat exchanger 22 and a nitrogen heat exchanger 44 , and a fan 11 for circulating the air in the refrigeration space 5 , whereby the air is conducted through the refrigeration unit 6 .
  • the refrigeration unit 6 cools the refrigeration space 5 , in that heat of the refrigeration space 5 is extracted via the supplemental heat exchanger 22 and/or the nitrogen heat exchanger 44 .
  • the nitrogen heat exchanger 44 is an essential part of a nitrogen cooling system in the refrigeration space 5 of the second vehicle part 3 comprising an insulated nitrogen tank 40 for liquid nitrogen LIN, nitrogen lines 42 , a nitrogen pump 43 and a nitrogen outlet 45 .
  • the liquid nitrogen LIN can be piped via the nitrogen pump 43 through the nitrogen lines 42 into the nitrogen heat exchanger 44 in the refrigeration space 5 , in which the liquid nitrogen LIN is evaporated and the heat required for warming up the liquid nitrogen LIN and for its phase transition is taken from the refrigeration space 5 , by what the desired indirect cooling power is achieved. After the evaporation the nitrogen can be emitted into the environment via the nitrogen outlet 45 .
  • Other known methods for cooling a refrigeration space with nitrogen can be used in parallel or alternatively to the one mentioned. Moreover, a simultaneous use of a conventional compressor based cooling circuit is possible.
  • the refrigeration space 5 of the second vehicle part 3 can be cooled indirectly by extracting its heat with the supplemental heat exchanger 22 of the refrigeration unit 6 via a heat exchange loop 20 by leading the heat into a first heat exchanger 21 , which is located in the first vehicle part 2 close to the evaporator to for the low-temperature liquefied combustible gas LNG, with the result that the phase transition of the combustible gas from liquid to gaseous takes place in the evaporator to.
  • the heat exchange loop 20 moreover, contains a coolant circulating in the heat exchange loop 20 , by means of being driven by a coolant pump 24 .
  • the heat exchange loop 20 in addition comprises flexible lines 23 as well as detachable couplings 25 , which enable the disconnection of the heat exchange loop 20 into two parts, if the first 2 and the second 3 vehicle part are separated, whereby for increasing safety and practicability these two parts of the heat exchange loop 20 are sealed by reconnecting the elements of the detachable couplings 25 on each vehicle part 2 , 3 , so that two smaller loops are generated.
  • the detachable couplings 25 are designed in such a way, that in case of disconnecting all ends are automatically sealed simultaneously and thus no losses of coolant can occur.
  • the coolant pump 24 is mounted on the first vehicle part 2 and is preferentially directly operated by the internal combustion engine 4 by using a mechanic pump drive 26 , for example a vee-belt.
  • warm ambient air can be supplied to the evaporator to by opening a closable flap 30 .
  • the closable air flap 30 can be mounted in a way, that the ambient air imbibes rejected heat of the internal combustion engine 4 and afterwards supplies this additional heat to the evaporator to, therefore even if the ambient air is not warm enough for supporting an efficient evaporation of the low-temperature combustible gas LNG in the evaporator to a sufficient amount of heat is available.
  • a bypass valve 31 is included in the bypass connection 27 , which is inserted parallel to the detachable couplings 25 and parallel to the supplemental heat exchanger 22 on the first vehicle part 2 .
  • the bypass connection 27 provides a loop only consisting of the first heat exchanger 21 , the coolant pump 24 and the bypass valve 31 , if the bypass valve 31 is opened and a switching valve 32 , being inserted in a row with the first heat exchanger 21 , is closed.
  • the switching valve 32 is mounted in such a way, that the first heat exchanger 21 is, in case of a closed switching valve 32 and an opened bypass valve 31 , still passed through with circulating coolant for not freezing.
  • the bypass connection 27 is applied, when the refrigeration space 5 does not require any cooling because its set temperature is reached.
  • the bypass valve 31 is also opened, if the two vehicle parts 2 , 3 are disconnected and thus the corresponding couplings 25 between the vehicle parts 2 , 3 are detached.
  • the heat required for the evaporation of the low-temperature liquefied combustible gas LNG in the evaporator to is in case of bypassing the supplemental heat exchanger 22 , hence opened bypass valve 31 and closed switching valve 32 , supplied by air being conducted through the closeable air flap 30 .
  • the refrigeration room cooling using the heat exchange loop 20 as mentioned before is preferably used when the internal combustion engine 4 of the refrigeration vehicle 1 is in use, because in this case gaseous combustible gas LNG is required in the internal combustion engine 4 and the synergistic effects of the process can be fully utilized.
  • the required cold can be supplied by the liquid nitrogen LIN cooling method as described. In this way an extraordinary efficient technique for distributing the available forms of energy can be realized, and therefore in particular the consumption of liquid nitrogen LIN in a refrigeration truck can be minimized.
  • the liquid nitrogen cooling method can be used simultaneously.
  • the nitrogen heat exchanger 44 is arranged behind the supplemental heat exchanger 22 according to the fan 11 in the refrigeration unit 6 , so that the air circulating in the refrigeration space 5 firstly flows through the supplemental heat exchanger 22 .
  • the first vehicle part 2 is additionally equipped with a boil-off device 50 , which enables a connection of the fuel tank 7 to a second nitrogen tank 41 via a heat-transmitting connection element 51 .
  • the boil-off device 50 hereby enables an exceptionally efficient joint storage and/or transport of low-temperature liquefied combustible gas LNG and liquid nitrogen LIN, because the low-temperature liquefied combustible gas LNG can be cooled directly or indirectly with the liquid nitrogen LIN in the second nitrogen tank 41 . An evaporation of the low-temperature liquefied combustible gas LNG on account of the supply of heat from the surroundings is thus prevented.
  • the boil-off device 50 ensures that the temperature of the low-temperature liquefied combustible gas LNG in the fuel tank 7 is kept below the boiling point of all the constituents, which temperature amounts, in the case of a pressureless storage of natural gas, to ⁇ 161° C.
  • an enrichment of constituents of the low-temperature liquefied combustible gas LNG, possessing a relatively high boiling point, in the fuel tank 7 can be avoided.
  • a potentially damaging increase of the part of propane in the low-temperature liquefied combustible gas LNG can be obviated.
  • the present invention is especially suitable for refrigeration transporters operated with natural gas, which are used for the distribution of frozen and chilled goods to retail dealers.
  • the economic employment of a combustion engine operated with natural gas in a transporter, storing the natural gas in the liquid phase, and the combined use of this cold for cooling a refrigeration space is highly advantageous, because the amount of energy needed all in all can be explicitly lowered.
  • using the boil-off device in the tractor is particularly advantageous, because a simultaneous, combined filling mode for liquid nitrogen and natural gas at a corresponding filling station unit becomes possible, realizing an extraordinary increase in efficiency.
US13/697,948 2010-05-14 2011-04-22 Refrigeration Vehicle and Method for Cooling its Refrigeration Space Using a Low-Temperature-Liquefied Combustible Gas Abandoned US20130055728A1 (en)

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