US20150121905A1 - Continuous flow thermodynamic pump - Google Patents
Continuous flow thermodynamic pump Download PDFInfo
- Publication number
- US20150121905A1 US20150121905A1 US14/599,390 US201514599390A US2015121905A1 US 20150121905 A1 US20150121905 A1 US 20150121905A1 US 201514599390 A US201514599390 A US 201514599390A US 2015121905 A1 US2015121905 A1 US 2015121905A1
- Authority
- US
- United States
- Prior art keywords
- tanks
- manifold
- heat exchanger
- supply
- accumulator
- 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.)
- Abandoned
Links
- 239000001257 hydrogen Substances 0.000 claims abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005086 pumping Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/02—Tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/30—Fuel systems for specific fuels
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- 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
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- 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
- F17C13/04—Arrangement or mounting of valves
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- 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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- 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
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
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- 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
- F17C2201/0128—Shape spherical or elliptical
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- 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
- F17C2205/0142—Two or more vessels characterised by the presence of fluid connection between vessels bundled in parallel
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- 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
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- F17C2205/0123—Mounting arrangements characterised by number of vessels
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- F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
- F17C2205/0146—Two or more vessels characterised by the presence of fluid connection between vessels with details of the manifold
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- 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
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- 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
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- 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
- F17C2221/012—Hydrogen
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- 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
- F17C2223/0107—Single phase
- F17C2223/013—Single phase liquid
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- 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
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- 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
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- 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
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
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- 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
- F17C2225/035—High pressure, i.e. between 10 and 80 bars
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- 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
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- 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
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- 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
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- 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
- F17C2227/0304—Heat exchange with the fluid by heating using an electric heater
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- 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
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- 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
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- 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
- F17C2227/04—Methods for emptying or filling
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- 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
- F17C2227/04—Methods for emptying or filling
- F17C2227/041—Methods for emptying or filling vessel by vessel
- F17C2227/042—Methods for emptying or filling vessel by vessel with change-over from one vessel to another
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
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- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/01—Intermediate tanks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
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- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/066—Fluid distribution for feeding engines for propulsion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0186—Applications for fluid transport or storage in the air or in space
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
Definitions
- Embodiments of the disclosure relate generally to cryogenic pumping systems and more particularly to embodiments for a system employing multiple thermodynamic pumping chambers sequentially receiving cryogenic liquid from a tank and interconnected though a heat exchanger to a gas supply tank for continuous gas supply.
- Embodiments disclosed herein provide a thermodynamic pump for providing gaseous hydrogen.
- the pump employs a plurality of liquid hydrogen (LH2) tanks sequentially pressurized with gaseous hydrogen (GH2) from an accumulator.
- LH2 liquid hydrogen
- GH2 gaseous hydrogen
- a heat exchanger receiving LH2 from each of the plurality of tanks as sequentially pressurized returns pressurized GH2 to the accumulator for supply to an engine.
- the embodiments provide a method for alternatingly connecting one of multiple liquid hydrogen tanks through a boost pump with an accumulator containing hydrogen gas providing a continuous flow of hydrogen gas to an engine.
- FIG. 1 is a schematic diagram of the elements of a LH2 storage and GH2 supply system employing an embodiment of the thermodynamic pump;
- FIGS. 2-16 demonstrate the operation of the thermodynamic pump to provide continuous GH2 supply.
- a LH2 storage dewar 10 stores LH2 for the system. While one dewar is shown, multiple dewars may be employed for alternative embodiments requiring additional LH2 storage capability.
- a thermodynamic pump (TDP) 12 incorporates a LH2 transfer accumulator and return GH2 condenser 14 receiving LH2 from dewar 10 through a first boost pump 16 and returning GH2 to the dewar through a first heat exchanger 18 in the accumulator condenser.
- TDP tanks shown for the embodiment described as spheres 20 a, 20 b and 20 c receive LH2 from the LH2 transfer accumulator through a liquid fill manifold 22 having inlet valves 24 a, 24 b and 24 c into the respective spheres.
- Each sphere provides LH2 to a liquid supply manifold 26 through supply valves 28 a, 28 b and 28 c, respectively.
- a second boost pump 30 induces liquid flow through the supply manifold to a heat exchanger 32 incorporating a hot working fluid line 34 flowing into and through heat exchanger 32 , typically from an engine coolant system, and a LH2 to GH2 conversion line 36 flowing into and through heat exchanger 32 .
- Gas in the GH2 conversion line is provided to a GH2 accumulator 38 , which provides interim GH2 storage for supply through proportional flow control device (PFCD) 40 to an engine 42 such as a reciprocating internal combustion engine for a HALE air vehicle application.
- PFCD proportional flow control device
- GH2 may also be supplied by the PFCD to other accessory systems 44 such as a fuel cell for electrical power generation to supplement mechanical power generated by the engine.
- a GH2 pressurization manifold 46 interconnects GH2 accumulator 38 to ullage in each of the TDP spheres through pressurization valves 48 a, 48 b and 48 c for operational pressurization of the spheres as will be described in greater detail subsequently.
- a blow down manifold 50 connected to the TDP spheres through depressurization valves 52 a, 52 b and 52 c returns GH2 to GH2 condenser 14 for return to LH2 dewar 10 also to be described in greater detail subsequently.
- Quick disconnects 54 a and 54 b are provided for ground service equipment (GSE) attachment to the LH2 dewar for LH2 fill and detanking, if required, and quick disconnect (QD) 54 c is provided for GH2 flow to/from the GH2 accumulator to GSE during fill operations.
- GSE ground service equipment
- QD quick disconnect
- FIGS. 2-16 demonstrate the operation of storage and supply system using the TDP pump 12 .
- filling of the system for operation is accomplished by flowing LH2 as represented by the arrows from GSE through QD 54 b into dewar 10 , accumulator 14 and through fill manifold 22 and open fill valves 24 a, 24 b and 24 c through the TDP spheres exiting through open depressurization valves 52 a, 52 b and 52 c into the depressurization manifold through condenser 18 into the dewar and vented through QD 54 a back to the GSE.
- FIG. 2 shows the system with cold GH2 resulting from flash vaporizing of the LH2 flowing through the system during cool down.
- liquid fill with LH2 commences as shown in FIG. 3 .
- inert gas such as helium followed by gaseous hydrogen
- GH2 charging of GH2 accumulator 38 through QD 54 c is accomplished.
- an operating GH2 pressure of about 150 psia is employed.
- fill valves 24 a, 24 b and 24 c are closed. Fill of the LH2 dewar continues until full as shown in FIG. 5 at which time the GSE may be disconnected and the system is ready for operation. In certain embodiments, valving to complete fill of the LH2 dewar prior to completion of the TDP spheres may be required for operational considerations.
- operation of TDP 12 commences with opening of pressurization valve 48 c introducing GH2 pressure from the GH2 accumulator into TDP sphere 20 c. Thermal contraction of the gas results in a minor reduction in gas pressure of approximately 5 psia to 145 psia as shown. Opening of supply valve 28 c provides LH2 flow from TDP sphere 20 c into supply manifold 26 assisted by boost pump 30 . LH2 flows through heat exchanger 32 gasifying the LH2 into GH2 and flowing to accumulator 38 for supply through PFCD 40 to use by the engine and/or other accessory systems.
- Flow through heat exchanger 32 increases operating pressure in the accumulator and TDP sphere 20 c to nominal at 150 psia as shown in FIG. 7 .
- a pressure regulator (not shown) maintains the nominal pressure of 150 psia in the accumulator. Pressures in the remaining two TDP spheres, 20 b and 20 a as well as the LH2 dewar and accumulator 14 remain nominally at 25 psia.
- pressurization valve 48 c When TDP sphere 20 c is substantially depleted of LH2, as shown in FIG. 8 , pressurization valve 48 c is closed and supply valve 28 c is closed. Pressurization valve 48 b is opened pressurizing TDP sphere 20 b, with the gas pressure fluctuation to 145 psia as shown, and supply valve 28 b is opened providing LH2 flow from TDP sphere 20 b to the supply manifold and through pump 30 to heat exchanger 32 to accumulator 38 . Fill valve 24 c and depressurization valve 52 c are opened to commence refilling of TDP sphere 20 c.
- f low through heat exchanger 32 increases operating pressure in the accumulator and TDP sphere 20 b allowing pressure recovery to 150 psia is achieved in TDP sphere 20 b and accumulator 38 .
- Depressurization of TDP sphere 20 c to approximately 25 psia for fill with flow through blow down manifold 50 and heat exchanger 18 and back into the LH2 dewar 10 results in a slight pressure increase in accumulator and condenser 14 of between 25 to 30 psia.
- LH2 flow from the dewar at 25 psia assisted by boost pump 16 fills TDP sphere 20 c as TDP sphere 20 b is being depleted as shown in FIG. 10 .
- LH2 saturation temperature and pressure results in the 25 psia dewar pressure. In alternative systems, alternate pressures and temperatures may be employed.
- pressurization valve 48 c When TDP sphere 20 b is substantially depleted of LH2, as shown in FIG. 11 , pressurization valve 48 c is closed and supply valve 28 b is closed. Pressurization valve 48 a is opened pressurizing TDP sphere 20 a, with the gas pressure fluctuation to 145 psia as shown, and supply valve 28 ab is opened providing LH2 flow from TDP sphere 20 a to the supply manifold and through pump 30 to heat exchanger 32 to accumulator 38 . Fill valve 24 b and depressurization valve 52 b are opened to commence refilling of TDP sphere 20 b.
- TDP sphere 20 a and accumulator 38 pressure recovery to 150 psia is achieved in TDP sphere 20 a and accumulator 38 .
- Depressurization of TDP sphere 20 b to approximately 25 psia for fill with flow through blow down manifold 50 and heat exchanger 18 and back into the LH2 dewar 10 maintains the slight pressure increase in accumulator and condenser 14 of between 25 to 30 psia.
- LH2 flow from the dewar assisted by boost pump 16 fills TDP sphere 20 b as TDP sphere 20 a is being depleted as shown in FIG. 13 .
- pressurization valve 48 a When TDP sphere 20 a is substantially depleted of LH2, as shown in FIG. 14 , pressurization valve 48 a is closed and supply valve 28 a is closed. Pressurization valve 48 c is opened pressurizing TDP sphere 20 c, with the gas pressure fluctuation to 145 psia as shown, and supply valve 28 c is opened providing LH2 flow from TDP sphere 20 c to the supply manifold and through pump 30 to heat exchanger 32 to accumulator 38 . Fill valve 24 a and depressurization valve 52 a are opened to commence refilling of TDP sphere 20 a.
- TDP sphere 20 c and accumulator 38 pressure recovery to 150 psia is achieved in TDP sphere 20 c and accumulator 38 .
- Depressurization of TDP sphere 20 a to approximately 25 psia for fill with flow through blow down manifold 50 and heat exchanger 18 and back into the LH2 dewar 10 maintains the slight pressure increase in accumulator and condenser 14 of between 25 to 30 psia.
- LH2 flow from the dewar assisted by boost pump 16 fills TDP sphere 20 a as TDP sphere 20 c is being depleted as shown in FIG. 16 placing the system in the condition as previously described with respect to FIG. 8 and the transition between the three TDP spheres rotates for continuous supply of GH2 to accumulator 38 and the engine and or auxiliary systems.
- the LH2 dewar(s) may be one or more 10 foot diameter spherical vacuum jacketed tanks.
- the TDP spheres are 6 inch diameter stainless steel vacuum jacketed tanks. In alternative embodiments, foam insulation or vacuum jacketing with additional insulation may be employed.
- the TDP spheres are not intended for long term LH2storage.
- the sizing and thermal performance of the TDP spheres is selected to provide rapid cyclical LH2 fill, depletion and transfer to the liquid supply manifold over short time periods with minimal temperature change (i.e. warm-up) between cycles.
- cycle time for each TDP sphere is approximately 1 minute at nominal flow rates and may approach 20 seconds an maximum flow conditions.
- TDP spheres While three TDP spheres have been shown for this embodiment, two spheres or a larger number of spheres may be employed to desired thermal and pumping performance. Additionally, while discharge of one sphere and recharge of a depleted sphere are shown with comparable times in the described embodiment, sequential recharging of multiple spheres may be required to accommodate more rapid depletion times than refill times. Additionally, spherical tanks are employed in the exemplary embodiment, however, cylindrical or conformal tankage may be employed in alternative embodiments. In certain embodiments, a heater assembly 56 , as shown in FIG. 1 , may be employed in each TDP sphere to maintain a specific working temperature or thermal resistance.
- Cycle time on the TDP sphere fill and depletion is on the order of 1 minute with the heat exchanger 32 operating at about 2700 lbs/hour hot working fluid flow and about 47 lbs/hr H2 flow.
- Boost pumps 16 and 30 are electrically driven rotor pumps providing approximately 1 ⁇ 2 psi head rise for inducing flow of the LH2 in the system to avoid stagnation of flow.
- Level sensors 58 in each TDP spheres for determination of full and depleted conditions for cycle control as described may be silicon diode point sensors, capacitive sensors or other suitable devices.
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Abstract
Description
- This application is a division of application Ser. No. 12/972,428 filed on Dec. 18, 2010 entitled CONTINUOUS FLOW THERMODYNAMIC PUMP and having a common assignee as the present application, the disclosure of which is incorporated herein by reference.
- 1. Field
- Embodiments of the disclosure relate generally to cryogenic pumping systems and more particularly to embodiments for a system employing multiple thermodynamic pumping chambers sequentially receiving cryogenic liquid from a tank and interconnected though a heat exchanger to a gas supply tank for continuous gas supply.
- 2. Background
- The use of liquid hydrogen, LH2, for higher density storage and the conversion of LH2 to gaseous hydrogen (GH2) for use in reciprocating and other internal combustion engines is a growing requirement. As an exemplary use, the need for high altitude long endurance (HALE) type Unmanned Aerial Vehicles with large reciprocating engines is growing exponentially and may soon reach 3,000 vehicles per year. Use of hydrogen for fueling these vehicles has been demonstrated as an efficient and environmentally friendly solution. However, reasonable storage densities for hydrogen can only be achieved with cryogenic storage as a liquid. Each vehicle will have a need for a LH2 hydrogen pump and GH2 conversion system. Without a suitable pump, the vehicle will not be able to meet the long endurance requirements of HALE vehicles. Reliable continuous flow of GH2 for the engine is a necessity.
- Prior mechanical LH2 pumping systems supplying liquid to conventional heat exchangers for conversion to gas, such as those used in rocket fueling systems, have proved complex and insufficiently reliable for extended usage. Unlike rocket systems which deplete their fuel within a matter of seconds or minutes, applications such as HALE require continuous GH2 supply for days or longer. Additionally, reusability of the system without extraordinary refurbishment requirements is needed.
- It is therefore desirable to provide and LH2 pumping system which has simplified mechanical requirements while providing continuous flow for GH2 conversion over an extended period.
- Embodiments disclosed herein provide a thermodynamic pump for providing gaseous hydrogen. The pump employs a plurality of liquid hydrogen (LH2) tanks sequentially pressurized with gaseous hydrogen (GH2) from an accumulator. A heat exchanger receiving LH2 from each of the plurality of tanks as sequentially pressurized returns pressurized GH2 to the accumulator for supply to an engine.
- In operation, the embodiments provide a method for alternatingly connecting one of multiple liquid hydrogen tanks through a boost pump with an accumulator containing hydrogen gas providing a continuous flow of hydrogen gas to an engine.
- The features, functions, and advantages that have been discussed can be achieved independently in various embodiments of the present disclosure or may be combined in yet other embodiments further details of which can be seen with reference to the following description and drawings.
-
FIG. 1 is a schematic diagram of the elements of a LH2 storage and GH2 supply system employing an embodiment of the thermodynamic pump; -
FIGS. 2-16 demonstrate the operation of the thermodynamic pump to provide continuous GH2 supply. - Referring to
FIG. 1 , the embodiments described herein demonstrate a system for storage of LH2 and supply of GH2 by a thermodynamic pump to an engine and/or other accessory systems through a proportional flow control device. For an exemplary embodiment, aLH2 storage dewar 10 stores LH2 for the system. While one dewar is shown, multiple dewars may be employed for alternative embodiments requiring additional LH2 storage capability. A thermodynamic pump (TDP) 12 incorporates a LH2 transfer accumulator and returnGH2 condenser 14 receiving LH2 fromdewar 10 through afirst boost pump 16 and returning GH2 to the dewar through afirst heat exchanger 18 in the accumulator condenser. Multiple TDP tanks shown for the embodiment described asspheres liquid fill manifold 22 havinginlet valves liquid supply manifold 26 throughsupply valves - A
second boost pump 30 induces liquid flow through the supply manifold to aheat exchanger 32 incorporating a hot workingfluid line 34 flowing into and throughheat exchanger 32, typically from an engine coolant system, and a LH2 toGH2 conversion line 36 flowing into and throughheat exchanger 32. Gas in the GH2 conversion line is provided to aGH2 accumulator 38, which provides interim GH2 storage for supply through proportional flow control device (PFCD) 40 to anengine 42 such as a reciprocating internal combustion engine for a HALE air vehicle application. GH2 may also be supplied by the PFCD to other accessory systems 44 such as a fuel cell for electrical power generation to supplement mechanical power generated by the engine. - A
GH2 pressurization manifold 46interconnects GH2 accumulator 38 to ullage in each of the TDP spheres throughpressurization valves manifold 50 connected to the TDP spheres throughdepressurization valves GH2 condenser 14 for return toLH2 dewar 10 also to be described in greater detail subsequently. -
Quick disconnects -
FIGS. 2-16 demonstrate the operation of storage and supply system using theTDP pump 12. InFIG. 2 , filling of the system for operation is accomplished by flowing LH2 as represented by the arrows from GSE throughQD 54 b intodewar 10,accumulator 14 and throughfill manifold 22 andopen fill valves open depressurization valves condenser 18 into the dewar and vented throughQD 54 a back to the GSE.FIG. 2 shows the system with cold GH2 resulting from flash vaporizing of the LH2 flowing through the system during cool down. After sufficient cool down of the system, liquid fill with LH2 commences as shown inFIG. 3 . Those skilled in the art will recognize that a preliminary flow of inert gas such as helium followed by gaseous hydrogen may precede LH2 flow. Concurrently with LH2 fill of the dewar and TDP spheres, GH2 charging ofGH2 accumulator 38 throughQD 54 c is accomplished. For the exemplary embodiment, an operating GH2 pressure of about 150 psia is employed. - As shown in
FIG. 4 , upon completion of filling the TDP spheres,fill valves FIG. 5 at which time the GSE may be disconnected and the system is ready for operation. In certain embodiments, valving to complete fill of the LH2 dewar prior to completion of the TDP spheres may be required for operational considerations. - As shown in
FIG. 6 , operation ofTDP 12 commences with opening ofpressurization valve 48 c introducing GH2 pressure from the GH2 accumulator intoTDP sphere 20 c. Thermal contraction of the gas results in a minor reduction in gas pressure of approximately 5 psia to 145 psia as shown. Opening ofsupply valve 28 c provides LH2 flow fromTDP sphere 20 c intosupply manifold 26 assisted byboost pump 30. LH2 flows throughheat exchanger 32 gasifying the LH2 into GH2 and flowing to accumulator 38 for supply throughPFCD 40 to use by the engine and/or other accessory systems. Flow throughheat exchanger 32 increases operating pressure in the accumulator andTDP sphere 20 c to nominal at 150 psia as shown inFIG. 7 . In the exemplary embodiments, a pressure regulator (not shown) maintains the nominal pressure of 150 psia in the accumulator. Pressures in the remaining two TDP spheres, 20 b and 20 a as well as the LH2 dewar andaccumulator 14 remain nominally at 25 psia. - When
TDP sphere 20 c is substantially depleted of LH2, as shown inFIG. 8 ,pressurization valve 48 c is closed andsupply valve 28 c is closed.Pressurization valve 48 b is opened pressurizingTDP sphere 20 b, with the gas pressure fluctuation to 145 psia as shown, andsupply valve 28 b is opened providing LH2 flow fromTDP sphere 20 b to the supply manifold and throughpump 30 toheat exchanger 32 toaccumulator 38.Fill valve 24 c anddepressurization valve 52 c are opened to commence refilling ofTDP sphere 20 c. - As shown in
FIG. 9 , f low throughheat exchanger 32 increases operating pressure in the accumulator andTDP sphere 20 b allowing pressure recovery to 150 psia is achieved inTDP sphere 20 b andaccumulator 38. Depressurization ofTDP sphere 20 c to approximately 25 psia for fill with flow through blow downmanifold 50 andheat exchanger 18 and back into theLH2 dewar 10 results in a slight pressure increase in accumulator and condenser 14 of between 25 to 30 psia. LH2 flow from the dewar at 25 psia assisted byboost pump 16fills TDP sphere 20 c asTDP sphere 20 b is being depleted as shown inFIG. 10 . For the embodiment shown, LH2 saturation temperature and pressure results in the 25 psia dewar pressure. In alternative systems, alternate pressures and temperatures may be employed. - When
TDP sphere 20 b is substantially depleted of LH2, as shown inFIG. 11 ,pressurization valve 48 c is closed andsupply valve 28 b is closed.Pressurization valve 48 a is opened pressurizingTDP sphere 20 a, with the gas pressure fluctuation to 145 psia as shown, and supply valve 28 ab is opened providing LH2 flow fromTDP sphere 20 a to the supply manifold and throughpump 30 toheat exchanger 32 toaccumulator 38. Fillvalve 24 b anddepressurization valve 52 b are opened to commence refilling ofTDP sphere 20 b. - As shown in
FIG. 12 , pressure recovery to 150 psia is achieved inTDP sphere 20 a andaccumulator 38. Depressurization ofTDP sphere 20 b to approximately 25 psia for fill with flow through blow downmanifold 50 andheat exchanger 18 and back into theLH2 dewar 10 maintains the slight pressure increase in accumulator andcondenser 14 of between 25 to 30 psia. LH2 flow from the dewar assisted byboost pump 16fills TDP sphere 20 b asTDP sphere 20 a is being depleted as shown inFIG. 13 . - When
TDP sphere 20 a is substantially depleted of LH2, as shown inFIG. 14 ,pressurization valve 48 a is closed andsupply valve 28 a is closed.Pressurization valve 48 c is opened pressurizingTDP sphere 20 c, with the gas pressure fluctuation to 145 psia as shown, andsupply valve 28 c is opened providing LH2 flow fromTDP sphere 20 c to the supply manifold and throughpump 30 toheat exchanger 32 toaccumulator 38. Fillvalve 24 a anddepressurization valve 52 a are opened to commence refilling ofTDP sphere 20 a. - As shown in
FIG. 15 , pressure recovery to 150 psia is achieved inTDP sphere 20 c andaccumulator 38. Depressurization ofTDP sphere 20 a to approximately 25 psia for fill with flow through blow downmanifold 50 andheat exchanger 18 and back into theLH2 dewar 10 maintains the slight pressure increase in accumulator andcondenser 14 of between 25 to 30 psia. LH2 flow from the dewar assisted byboost pump 16fills TDP sphere 20 a asTDP sphere 20 c is being depleted as shown inFIG. 16 placing the system in the condition as previously described with respect toFIG. 8 and the transition between the three TDP spheres rotates for continuous supply of GH2 toaccumulator 38 and the engine and or auxiliary systems. - For exemplary embodiments such as a HALE air vehicle application, the LH2 dewar(s) may be one or more 10 foot diameter spherical vacuum jacketed tanks. The TDP spheres are 6 inch diameter stainless steel vacuum jacketed tanks. In alternative embodiments, foam insulation or vacuum jacketing with additional insulation may be employed. The TDP spheres are not intended for long term LH2storage. The sizing and thermal performance of the TDP spheres is selected to provide rapid cyclical LH2 fill, depletion and transfer to the liquid supply manifold over short time periods with minimal temperature change (i.e. warm-up) between cycles. For this exemplary sizing, cycle time for each TDP sphere is approximately 1 minute at nominal flow rates and may approach 20 seconds an maximum flow conditions. While three TDP spheres have been shown for this embodiment, two spheres or a larger number of spheres may be employed to desired thermal and pumping performance. Additionally, while discharge of one sphere and recharge of a depleted sphere are shown with comparable times in the described embodiment, sequential recharging of multiple spheres may be required to accommodate more rapid depletion times than refill times. Additionally, spherical tanks are employed in the exemplary embodiment, however, cylindrical or conformal tankage may be employed in alternative embodiments. In certain embodiments, a
heater assembly 56, as shown inFIG. 1 , may be employed in each TDP sphere to maintain a specific working temperature or thermal resistance. Cycle time on the TDP sphere fill and depletion is on the order of 1 minute with theheat exchanger 32 operating at about 2700 lbs/hour hot working fluid flow and about 47 lbs/hr H2 flow. Boost pumps 16 and 30 are electrically driven rotor pumps providing approximately ½ psi head rise for inducing flow of the LH2 in the system to avoid stagnation of flow.Level sensors 58 in each TDP spheres for determination of full and depleted conditions for cycle control as described may be silicon diode point sensors, capacitive sensors or other suitable devices. - Having now described various embodiments of the disclosure in detail as required by the patent statutes, those skilled in the art will recognize modifications and substitutions to the specific embodiments disclosed herein. Such modifications are within the scope and intent of the present disclosure as defined in the following claims.
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Also Published As
Publication number | Publication date |
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EP2466188A2 (en) | 2012-06-20 |
JP2012132558A (en) | 2012-07-12 |
US20120156059A1 (en) | 2012-06-21 |
US8950195B2 (en) | 2015-02-10 |
CN102536516B (en) | 2016-12-21 |
CN106678541B (en) | 2019-12-06 |
CN106678541A (en) | 2017-05-17 |
EP2466188A3 (en) | 2017-08-23 |
EP2466188B1 (en) | 2020-11-25 |
CA2755479A1 (en) | 2012-06-18 |
JP5925472B2 (en) | 2016-05-25 |
CA2755479C (en) | 2014-09-16 |
CN102536516A (en) | 2012-07-04 |
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