CPC F17C 7/04 (2013.01) [F04B 15/08 (2013.01); F17C 6/00 (2013.01); B63B 25/16 (2013.01); B63B 2025/087 (2013.01); F17C 2223/0161 (2013.01)] | 19 Claims |
1. A carrier for storing and transporting cryogenic liquids, comprising:
a tank configured to store and transport a cryogenic liquid having a liquefaction temperature;
a first pump configured to fill the tank with the cryogenic liquid and empty the tank of a first portion of the cryogenic liquid, thereby leaving a second portion of the cryogenic liquid in the tank;
a tank structure that focuses the second portion of the cryogenic liquid at a location on a bottom of the tank;
a second pump located at the location and configured to empty the tank of the second portion of the cryogenic liquid except for a residual portion of the cryogenic liquid that is left therein; and
a focused heating structure configured to deliver heat to the location on the bottom of the tank;
wherein the heat is configured to raise a temperature of the residual portion above the liquefaction temperature, thereby vaporizing all of the residual portion.
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