Patent ID: 8113006
Filing Date: 2012-02-14
Classification: F17C

Abstract:
1. A system for cryogenic storage and delivery of fuel supplied to a consuming device, the system comprising: a cryotank comprising at least an outer reservoir, an inner reservoir for receiving a cryogenic medium, which inner reservoir is held in a heat-insulated manner in the outer reservoir, and a coolable cooling shield between the inner reservoir and the outer reservoir of the cryotank; a heat sink which, as a thermal-energy storage device, is in heat-transmitting direct contact with the cooling shield; and a filling and removal device having at least one pipe penetrating the outer reservoir and leading into the inner reservoir, at least for the filling with or for the removal of cryogenic medium, the heat sink being in heat-transmitting contact with the at least one pipe for the cryogenic medium so as to reduce entry of heat from the environment into the inner reservoir while emitting heat; wherein the inner reservoir has a recess in which at least the heat sink and the at least one pipe for the cryogenic medium are housed, such that the heat sink and the at least one pipe for the cryogenic medium are situated essentially entirely within a circumferential contour of the inner reservoir; wherein the recess extends between two edges of the inner reservoir; wherein no portion of the heat sink extends beyond the cooling shield from within the recess of the inner reservoir; and wherein for evacuating and filling the cryotank, at least three pipes are provided, which extend from the inner reservoir through the recess in the inner reservoir out of the outer reservoir, the first pipe being provided for removal of cryogenic medium predominantly in a liquid state (LH2) from a lower area of the cryotank, the second pipe being provided for removal of cryogenic medium predominantly in a gaseous state (GH2) from an upper area of the cryotank, and the third pipe being provided for return of the medium as hot gas into the upper area of the cryotank.