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A cryogenic tank assembly has a pump which discharges into an accumulator which is located in the cryogenic storage area. This reduces the space required for the device as well as the functioning of the device. The high pressure fluid in the accumulator remains at a cryogenic temperature. The system

A cryogenic tank assembly has a pump which discharges into an accumulator which is located in the cryogenic storage area. This reduces the space required for the device as well as the functioning of the device. The high pressure fluid in the accumulator remains at a cryogenic temperature. The system may also include a heater to deliver high pressure gas form the liquid storage volume.

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What is claimed is: 1. A cryogenic tank assembly comprising: a. a vessel defining a cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; b. a pump comprising: i. an intake opening disposed in said cryogen space for receiving a quantity of said fluid from said

What is claimed is: 1. A cryogenic tank assembly comprising: a. a vessel defining a cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; b. a pump comprising: i. an intake opening disposed in said cryogen space for receiving a quantity of said fluid from said cryogen space; ii. a pressurizing device capable of pressurizing said quantity of said fluid to a pre-determined pressure, said pre-determined pressure being greater than said initial pressure and said pressurizing device being in communication with said intake opening; and, iii. a high pressure discharge passage in communication with said pressurizing device for discharging said quantity of said fluid from said pressurizing device, c. an accumulator comprising: i. an entrance for receiving said quantity of said fluid from said high pressure discharge passage; ii. a storage volume in communication with said entrance; and, iii. an exit in communication with said storage volume for delivering said quantity of said fluid, wherein a percentage of said accumulator is disposed within said cryogen space. 2. A cryogenic tank assembly as claimed in claim 1 further comprising a housing, said housing surrounding said percentage of said accumulator, said housing providing structural support to said accumulator. 3. A cryogenic tank assembly as claimed in claim 1 further comprising a heater capable of receiving said quantity of said fluid through said exit, said heater comprising: a. a heater inlet; and, b. a delivery outlet capable of delivering said quantity of said fluid as a gas at a pre-determined temperature, said pre-determined temperature being greater than said cryogenic temperature. 4. A cryogenic tank assembly as claimed in claim 3 wherein a percentage of said heater is disposed within said cryogen space. 5. A cryogenic tank assembly as claimed in claim 3 further comprising a housing, said housing surrounding said percentage of said accumulator, said housing providing thermal insulation between said accumulator and said cryogenic space. 6. A cryogenic tank assembly as claimed in claim 5, wherein said housing comprises an inner wall defining a housing space and an outer wall surrounding said inner wall, said outer wall defining a thermal insulation space between said inner wall and said outer wall, and said outer wall comprising an outer surface, a percentage of said outer surface facing said cryogen space, wherein said percentage of said accumulator is within said housing space. 7. A cryogenic tank assembly as claimed in claim 3, further comprising a housing defining a housing space, said housing comprising a first end and a second end, said first end attached to said vessel and said second end extending into said cryogen space such that a percentage of said housing space is defined within said cryogen space, wherein a second percentage of said accumulator is disposed within said housing space. 8. A cryogenic tank assembly as claimed in claim 4 further comprising a housing, said housing surrounding: a. said percentage of said accumulator disposed within said cryogen space; and, b. said percentage of said heater disposed within said cryogen space, said housing providing thermal insulation between: said percentage of said accumulator and said cryogen space; and, said percentage of said heater and said cryogen space. 9. A cryogenic tank assembly as claimed in claim 8, wherein said housing comprises an inner wall defining a housing space and an outer wall surrounding said inner wall, whereby said outer wall defines a thermal insulation space between said inner wall and said outer wall, and said outer wall comprises an outer surface, and at least a portion of said outer surface faces said cryogen space, wherein: a. said percentage of said accumulator disposed within said cryogen space; and, b. said percentage of said heater disposed within said cryogen space are disposed within said housing space. 10. A cryogenic tank assembly as claimed in claim 5, further comprising a housing defining a housing space, said housing comprising a first end and a second end, said first end attached to said vessel and said second end extending into said cryogen space such that a percentage of said housing space is defined within said cryogen space, wherein: a second percentage of said accumulator is disposed within said housing space; and, a second percentage of said heater is disposed within said housing space. 11. A cryogenic tank assembly as claimed in claim 10, wherein said second percentage of said accumulator is wholly disposed within said cryogen space. 12. A cryogenic tank assembly as claimed in claim 11, wherein said second percentage of said heater is wholly disposed within said cryogen space. 13. A cryogenic tank assembly as claimed in claim 5, further comprising a suitable thermal insulator, said insulator providing insulation between said heater and said cryogen space. 14. A cryogenic tank assembly as claimed in claim 5 wherein said heater comprises a heating substance and at least one channel for housing said heating substance wherein said heating substance is capable of warming said cryogenic fluid such that said cryogenic fluid is converted to said gas. 15. A cryogenic tank assembly as claimed in claim 14 wherein said heating substance is a heating fluid capable of being circulated through said at least one channel. 16. A cryogenic tank assembly as claimed in claim 15 wherein said gas is capable of being delivered through said delivery outlet for use as a fuel in an engine and said heating fluid is engine coolant. 17. A cryogenic tank assembly as claimed in claim 14 wherein said heater further comprises a fluid passageway for directing said fluid from said heater inlet through said at least one channel to said delivery outlet. 18. A cryogenic tank assembly as claimed in claim 17 wherein said heater further comprises a pipe defining said fluid passageway, wherein said pipe is disposed in said channel. 19. A cryogenic tank assembly as claimed in claim 1, further comprising an outer jacket surrounding said vessel, said outer jacket defining an vessel insulation volume disposed between said outer jacket and said vessel. 20. A cryogenic tank assembly as claimed in claim 19 wherein said vessel insulation volume comprises an evacuated space. 21. A cryogenic tank assembly as claimed in claim 9, further comprising an outer jacket surrounding said vessel, said outer jacket defining a vessel insulation volume disposed between said outer jacket and said vessel wherein said thermal insulation space is in communication with said vessel insulation volume. 22. A cryogenic tank assembly as claimed in claim 21 wherein said inner wall comprises: a jacket end that is attached to said outer jacket; and, a cryogen end that extends into said cryogen space, and said outer wall comprises: a vessel end that is attached to said vessel; and, a second cryogen end that extends into said cryogen space and attaches to said cryogen end, such that said inner wall and said outer wall provide support to said vessel within said outer jacket. 23. A cryogenic tank assembly as claimed in claim 22, further comprising at least one access passage disposed in said thermal insulation space for communicating between said cryogen space and outside of said cryogen tank assembly. 24. A cryogenic tank assembly as claimed in claim 1 wherein said pump is a reciprocating pump further comprising at least one piston disposed within a cylinder, said piston dividing said cylinder into an intake chamber and a pressure chamber. 25. A cryogenic tank assembly as claimed in claim 24 wherein said intake chamber is in communication with said intake opening through an intake valve, said intake valve permits one-way flow of said quantity of said fluid into said intake chamber through said intake valve. 26. A cryogenic tank assembly as claimed in claim 24 wherein said intake chamber is in communication with said pressure chamber through a piston valve capable of allowing one-way flow of said quantity of said fluid into said pressure chamber from said intake chamber. 27. A cryogenic tank assembly as claimed in claim 26 wherein said piston valve is disposed in said piston. 28. A cryogenic tank assembly as claimed in claim 24 wherein said pressure chamber is in communication with said high pressure discharge passage such that said quantity of said fluid is flowable into said high pressure discharge passage once said fluid is at said pre-determined pressure. 29. A cryogenic tank assembly as claimed in claim 28 wherein a high pressure valve prevents the flow of said quantity of said fluid from said pressure chamber into said high pressure discharge passage until the pressure of said quantity of said fluid is at or above said pre-determined pressure. 30. A cryogenic tank assembly as claimed in claim 24 further comprising: a drive unit; and, a piston rod wherein said drive unit is a hydraulic drive comprising a hydraulic piston disposed within a hydraulic cylinder wherein a hydraulic fluid is deliverable to said drive unit causing a reciprocating motion of said hydraulic piston, wherein said reciprocating motion is transferable to said at least one piston through said piston rod. 31. A cryogenic tank assembly as claimed in claim 3, wherein said accumulator is mounted between said heater and said pump. 32. A cryogenic tank assembly as claimed in claim 31 wherein said high pressure discharge passage is joined directly to said entrance. 33. A cryogenic tank assembly as claimed in claim 31 wherein said exit is joined directly to said heater inlet. 34. A cryogenic tank assembly as claimed in claim 31, further comprising a casing assembly, said casing assembly integrating said heater, said accumulator and said pump. 35. A cryogenic tank assembly as claimed in claim 34, wherein said casing assembly comprises at least one tie rod. 36. A cryogenic tank assembly comprising: a. an outer jacket; b. a vessel generally surrounded by said outer jacket, said vessel defining a cryogen space, said cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; c. a housing, said housing comprising a wall defining a housing space, said wall comprising a first end and a second end, said first end attached to said outer jacket and said second end extending into said cryogen space such that said housing space extends into said cryogen space, d. a pump comprising: i. an intake opening disposed in said cryogen space capable of receiving a quantity of said fluid from said cryogen space; ii. a pressurizing means capable of pressurizing said quantity of said fluid to a pre-determined pressure, said pre-determined pressure being greater than said initial pressure and said pressurizing means being in communication with said intake opening; and, iii. a high pressure discharge passage in communication with said pressurizing means for discharging said quantity of said fluid from said pressurizing means, e. an accumulator comprising: i. an entrance for receiving said quantity of said fluid from said high pressure discharge passage; ii. a storage volume in communication with said entrance; and, iii. an exit in communication with said storage volume for delivering said quantity of said fluid, wherein said accumulator is disposed within said cryogen space. 37. A cryogenic tank assembly as claimed in claim 36 further comprising a heater, said heater comprising: a. a heater inlet capable of receiving said quantity of said fluid from said exit; and, b. a delivery outlet capable of delivering said quantity of said fluid at a pre-determined temperature, said pre-determined temperature being greater than said cryogenic temperature. 38. A cryogenic tank assembly as claimed in claim 37 wherein said housing further comprises an outer wall generally surrounding said wall, whereby a thermal insulation space is defined between said wall and said outer wall such that said housing provides thermal insulation between said accumulator and said cryogen space. 39. A cryogenic tank assembly as claimed in claim 38 wherein said insulation space comprises an evacuated space. 40. A cryogenic tank assembly as claimed in claim 38 wherein said heater is also housed in said cryogen space and said thermal insulation space is capable of providing thermal insulation between said heater and said cryogen space. 41. A cryogenic tank assembly comprising: a. a vessel defining a cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; b. an outer jacket surrounding said vessel defining: i. an assembly space; and, ii. an insulation space between said vessel and said outer jacket wherein said assembly space comprises said cryogen space and said insulation space; c. a pump comprising: i. an intake opening disposed in said cryogen space for receiving a quantity of said fluid from said cryogen space; ii. a pressurizing device capable of receiving said quantity of said fluid from said intake opening and pressurizing said quantity of said fluid to a pre-determined pressure, said pre-determined pressure being greater than said initial pressure; and, iii. a high pressure discharge passage in communication with said pressurizing device for discharging said quantity of said fluid from said pressurizing device, d. an accumulator comprising: i. an entrance for receiving said quantity of said fluid from said high pressure discharge passage; ii. a storage volume in communication with said entrance; and, iii. an exit in communication with said storage volume for delivering said quantity of said fluid, wherein a percentage of said accumulator is disposed within said assembly space. 42. A cryogenic tank assembly as claimed in claim 41 wherein said percentage of said accumulator is disposed within said insulation space. 43. A cryogenic tank assembly as claimed in claim 41, further comprising a heater capable of receiving said quantity of said fluid through said exit, said heater comprising: a. a heater inlet; and, b. a delivery outlet capable of delivering said quantity of said fluid as a gas at a pre-determined temperature, said pre-determined temperature being greater than said cryogenic temperature. 44. A cryogenic tank assembly as claimed in claim 43 wherein a percentage of said heater is disposed within said assembly space. 45. A cryogenic tank assembly as claimed in claim 43 wherein said heater comprises a heating substance and at least one channel for housing said heating substance wherein said heating substance is capable of warming said cryogenic fluid such that said cryogenic fluid is converted to said gas. 46. A cryogenic tank assembly comprising: a. a vessel defining a cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; b. an outer jacket surrounding said vessel defining: i. an assembly space; and, ii. an insulation space between said vessel and said outer jacket; wherein said assembly space comprises said insulation space and said cryogen space, c. a support wall comprising a first end and a second end, said first end attached to said outer jacket and said second end extending into said cryogen space, wherein said support wall defines a housing space within said cryogen space, d. a barrier wall comprising a vessel end and a cryogen end, said vessel end attached to said vessel and said cryogen end extended into said cryogen space and attached to said second end, wherein said barrier wall defines a second insulation space between said support wall and said barrier wall, e. a pump comprising: i. a compression cylinder comprising an intake end and a discharge end; ii. an end flange abutted against said intake end; iii. an intermediate flange abutted against said discharge end; iv. a reciprocating piston movably disposed within said compression cylinder, said reciprocating piston comprising an intake face and a discharge face; v. an intake chamber defined within said cylinder between said intake face and said end flange; vi. a pressure chamber defined within said cylinder between said discharge face and said intermediate flange; vii. an intake opening disposed within said cryogen space for receiving a quantity of said fluid from said cryogen space; viii. a intake check valve capable of allowing one-way flow of said fluid into said intake chamber from said intake opening wherein said intake check valve is disposed within said end flange; ix. a piston check valve disposed within said piston capable of allowing one-way flow of said fluid from said intake chamber into said pressure chamber; x. an accumulator check valve disposed within said intermediate flange capable of allowing one-way flow of said fluid from said pressure chamber into a high pressure discharge passage, f. an accumulator fixed in said housing space said accumulator comprising: i. an entrance in communication with said high pressure discharge passage; ii. a coiled tube defining a storage volume, said storage volume in communication with said entrance; and, iii. an exit in communication with said storage volume for delivering said quantity of said fluid, wherein a percentage of said accumulator is disposed within said assembly space. 47. A method of storing a pressurized fluid comprising sequentially: a. receiving a quantity of a fluid from a cryogen space at an initial pressure, said cryogen space defined by a vessel; b. pressurizing said quantity of said fluid to within a pre-determined pressure range wherein said initial pressure is less than said predetermined pressure range; and, c. storing said quantity of said fluid within an accumulator disposed within said cryogen space wherein said quantity of said fluid is readily available for delivery within said pre-determined pressure range and wherein there is no fluid communication from the accumulator to the cryogenic space. 48. A method of storing and delivering a gas comprising sequentially: a. receiving a quantity of a fluid from a cryogen space at an initial pressure and an initial cryogenic temperature, said cryogen space defined by a vessel; b. pressurizing said quantity of said fluid to within a pre-determined pressure range wherein said initial pressure less than said predetermined pressure range; c. storing a percentage of said quantity of said fluid within an accumulator disposed within said cryogen space; d. heating said quantity of said fluid and transforming it to said gas within a pre-determined temperature range; and, e. delivering said gas within said pre-determined pressure range and within said pre-determined temperature range wherein said initial cryogenic temperature is less than said pre-determined temperature range and wherein there is no fluid communication from the accumulator to the cryogenic space. 49. A method of storing and delivering a pressurized gas as claimed in claim 48 wherein said pre-determined pressure range comprises pressures above the supercritical point of said fluid when said fluid is at said initial cryogenic temperature. 50. A method of storing and delivering a gas comprising sequentially: a. receiving a quantity of a fluid from a cryogen space at an initial pressure and an initial cryogenic temperature, said cryogen space defined by a vessel, said vessel surrounded by an outer jacket that defines a tank assembly space, said tank assembly space comprising said cryogen space; b. pressurizing said quantity of said fluid to within a pre-determined pressure range wherein said initial pressure less than said predetermined pressure range; c. storing a percentage of said quantity of said fluid within an accumulator disposed within said tank assembly space; d. heating said quantity of said fluid and transforming it to said gas within a pre-determined temperature range; and, e. delivering said gas within said pre-determined pressure range and within said pre-determined temperature range wherein said initial cryogenic temperature is less than said pre-determined temperature range and wherein there is no fluid communication from the accumulator to the cryogenic space. 51. An apparatus as claimed in claim 1 wherein said fluid comprises at least one of methane, methanol, ethane, propane, hydrogen, oxygen or butane. 52. An apparatus as claimed in any one of claim 1 wherein said fluid comprises an element that is combustible as a gas. 53. A cryogenic tank assembly comprising: a. a vessel defining a cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; b. a pump comprising: i. an intake opening disposed in said cryogen space for receiving a quantity of said fluid from said cryogen space; ii. a pressurizing device capable of pressurizing said quantity of said fluid to a pre-determined pressure, said pre-determined pressure being greater than said initial pressure and said pressurizing device being in communication with said intake opening; and, iii. a high pressure discharge passage in communication with said pressurizing device for discharging said quantity of said fluid from said pressurizing device, c. a conduit comprising: i. an entrance for receiving said quantity of said fluid from said high pressure discharge passage; ii. a storage volume in communication with said entrance; and, iii. an exit in communication with said storage volume for delivering said quantity of said fluid, d. a heater capable of receiving said quantity of said fluid through said exit, said heater comprising: i. a heater inlet; and, ii. a delivery outlet capable of delivering said quantity of said fluid as a gas at a pre-determined temperature, said predetermined temperature being greater than said cryogenic temperature, wherein a percentage of said heater is disposed within said cryogen space. 54. A cryogenic tank assembly as claimed in claim 53 further comprising a housing, said housing surrounding said percentage of said heater, said housing providing structural support to said heater. 55. A cryogenic tank assembly as claimed in claim 53, further comprising a housing defining a housing space, said housing comprising a first end and a second end, said first end attached to said vessel and said second end extending into said cryogen space such that a percentage of said housing space is defined within said cryogen space, wherein a second percentage of said heater is disposed within said housing space. 56. A cryogenic tank assembly as claimed in claim 55 wherein said second percentage of said heater is wholly within said cryogen space. 57. A cryogenic tank assembly as claimed in claim 53 wherein said exit is a distance from said entrance, said distance providing thermally insulation between said cryogen space and said exit. 58. A cryogenic tank assembly as claimed in claim 53 further comprising a housing, said housing surrounding said percentage of said heater disposed within said cryogen space, said housing providing thermal insulation between said percentage of said heater and said cryogen space. 59. A cryogenic tank assembly as claimed in claim 58 wherein said housing provides thermal insulation between said conduit and said cryogen space. 60. A cryogenic tank assembly as claimed in claim 58, wherein said housing comprises an inner wall defining a housing space and an outer wall surrounding said inner wall, whereby said outer wall defines a thermal insulation space between said inner wall and said outer wall, and said outer wall comprises an outer surface, and at least a portion of said outer surface faces said cryogen space, wherein: a. said conduit; and, b. said percentage of said heater disposed within said cryogen space are disposed within said housing space. 61. A cryogenic tank assembly as claimed in claim 53 wherein said heater comprises a heating substance and at least one channel for housing said heating substance wherein said heating substance is capable of warming said cryogenic fluid. 62. A cryogenic tank assembly as claimed in claim 61 wherein said heating substance is a heating fluid capable of being circulated through said at least one channel. 63. A cryogenic tank assembly as claimed in claim 62 wherein said gas is capable of being delivered through said delivery outlet for use as a fuel in an engine and said heating fluid is engine coolant. 64. A cryogenic tank assembly as claimed in claim 53 further comprising a drive unit capable of driving said pump wherein said drive unit is disposed outside of said cryogen space. 65. A cryogenic tank assembly as claimed in claim 64 further comprising a piston rod wherein said drive unit is in communication with said pump through said piston rod. 66. A cryogenic tank assembly as claimed in claim 53 wherein said conduit further comprises: a. a sleeve, said sleeve defining an passage space within said conduit; and, b. a storage vessel defining said storage volume wherein said storage volume is disposed in said passage space. 67. A cryogenic tank assembly as claimed in claim 66 wherein said storage vessel comprises at least one coiled tube. 68. A cryogenic tank assembly as claimed in claim 66 wherein said sleeve is a thermal insulator. 69. A cryogenic tank assembly comprising: a. an outer jacket; b. a vessel generally surrounded by said outer jacket, said vessel defining a cryogen space, said cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; c. a housing, said housing comprising a wall defining a housing space, said wall comprising a first end and a second end, said first end attached to said outer jacket and said second end extending into said cryogen space such that said housing space extends into said cryogen space, d. a pump comprising: i. an intake opening disposed in said cryogen space capable of receiving a quantity of said fluid from said cryogen space; ii. a pressurizing means capable of pressurizing said quantity of said fluid to a pre-determined pressure, said pre-determined pressure being greater than said initial pressure and said pressurizing means being in communication with said intake opening; and, iii. a high pressure discharge passage in communication with said pressurizing means for discharging said quantity of said fluid from said pressurizing means, e. a conduit comprising: i. an entrance for receiving said quantity of said fluid from said high pressure discharge passage; ii. a storage volume in communication with said entrance; and, iii. an exit in communication with said storage volume for delivering said quantity of said fluid, f. a heater disposed within said cryogen space, said heater comprising: i. a heater inlet capable of receiving said quantity of said fluid from said exit; and, ii. a delivery outlet capable of delivering said quantity of said fluid at a pre-determined temperature, said pre-determined temperature being greater than said cryogenic temperature said conduit providing thermal insulation between said heater and said cryogen space. 70. A cryogenic tank assembly as claimed in claim 69 wherein said housing further comprises an outer wall generally surrounding said wall, whereby a thermal insulation space is defined between said wall and said outer wall such that said housing provides thermal insulation between said heater and said cryogen space. 71. A cryogenic tank assembly as claimed in claim 70 wherein said insulation space comprises an evacuated space. 72. A cryogenic tank assembly as claimed in claim 70 wherein said thermal insulation space has a conductivity of less than 15 W/m times쨌K. 73. A cryogenic tank assembly as claimed in claim 69, wherein said conduit further comprises an evacuated space surrounding said storage volume. 74. A cryogenic tank assembly comprising: a. a vessel defining a cryogen space capable of storing a fluid at a cryogenic temperature and an initial pressure; b. an outer jacket surrounding said vessel defining: i. an assembly space; and, ii. an insulation space between said vessel and said outer jacket; wherein said assembly space comprises said insulation space and said cryogen space, c. a support wall comprising a first end and a second end, said first end attached to said outer jacket and said second end extending into said cryogen space, wherein said support wall defines a housing space within said cryogen space, d. a barrier wall comprising a vessel end and a cryogen end, said vessel end attached to said vessel and said cryogen end extended into said cryogen space and attached to said second end, wherein said barrier wall defines a second insulation space between said support wall and said barrier wall, e. a pump comprising: i. a compression cylinder comprising an intake end and a discharge end; ii. an end flange abutted against said intake end; iii. an intermediate flange abutted against said discharge end; iv. a reciprocating piston movably disposed within said compression cylinder, said reciprocating piston comprising an intake face and a discharge face; v. an intake chamber defined within said cylinder between said intake face and said end flange; vi. a pressure chamber defined within said cylinder between said discharge face and said intermediate flange; vii. an intake opening disposed within said cryogen space for receiving a quantity of said fluid from said cryogen space; viii. a intake check valve capable of allowing one-way flow of said fluid into said intake chamber from said intake opening wherein said intake check valve is disposed within said end flange; ix. a piston check valve disposed within said piston capable of allowing one-way flow of said fluid from said intake chamber into said pressure chamber; x. an conduit check valve disposed within said intermediate flange capable of allowing one-way flow of said fluid from said pressure chamber into a high pressure discharge passage, f. an conduit fixed in said housing space said conduit comprising: i. an entrance in communication with said high pressure discharge passage; ii. a coiled tube defining a storage volume, said storage volume in communication with said entrance; and, iii. an exit in communication with said storage volume for delivering said quantity of said fluid, g. a heater, a percentage of said heater is disposed within said assembly space, said heater comprising i. a coiled pipe disposed within at least one heat bath channel, wherein said fluid is receivable into said coiled pipe from said exit, and ii. a heating fluid is capable of being circulated through said at least one heat bath channel such that said fluid is deliverable from said pipe at a temperature higher than said cryogenic temperature. 75. A method of storing and delivering a gas comprising sequentially: a. receiving a quantity of a fluid from a cryogen space at an initial pressure and an initial cryogenic temperature, said cryogen space defined by a vessel; b. pressurizing said quantity of said fluid to within a pre-determined pressure range wherein said initial pressure less than said pre-determined pressure range; c. delivering said quantity of said fluid to a heater thermally insulated from said cryogen space; d. heating said quantity of said fluid with said heater within said cryogen space and transforming it to said gas within a pre-determined temperature range; and, e. delivering said gas within said pre-determined pressure range and within said pre-determined temperature range wherein said initial cryogenic temperature is less than said pre-determined temperature range. 76. A method of storing and delivering a pressurized gas as claimed in claim 75 wherein said pre-determined pressure range comprises pressures above the supercritical point of said fluid when said fluid is at said initial cryogenic temperature. 77. A method of storing and delivering a gas comprising sequentially: a. receiving a quantity of a fluid from a cryogen space at an initial pressure and an initial cryogenic temperature, said cryogen space defined by a vessel, said vessel surrounded by an outer jacket that defines a tank assembly space, said tank assembly space comprising said cryogen space; b. pressurizing said quantity of said fluid to within a pre-determined pressure range wherein said initial pressure less than said pre-determined pressure range; c. delivering said quantity of said fluid to a heater disposed within said tank assembly space; d. heating said quantity of said fluid with said heater and transforming it to said gas within a pre-determined temperature range; and, e. delivering said gas within said pre-determined pressure range and within said pre-determined temperature range wherein said initial cryogenic temperature is less than said pre-determined temperature range.