초록 ▼

The invention relates to a system for delivering gas stored in a vessel in liquefied form, said vessel having in its lower part a liquefied phase of said gas and in the upper part a gaseous phase of said gas, which vessel includes a means for connecting to a means for utilization as well as a means

The invention relates to a system for delivering gas stored in a vessel in liquefied form, said vessel having in its lower part a liquefied phase of said gas and in the upper part a gaseous phase of said gas, which vessel includes a means for connecting to a means for utilization as well as a means for heating the lower part of said vessel. In accordance with the invention, the liquefied gas and/or the shell of the vessel are electrically conductive elements and the means for heating comprises an electromagnetic induction means capable of producing an alternating magnetic field in the shell and/or the liquid so as to heat the shell in its lower part and/or the liquid in the vessel, all while limiting the heating of the gas by said means.

대표청구항 ▼

What is claimed is: 1. A system for delivering gas stored in a vessel, wherein: a) said vessel comprising a lower part, an upper part, a shell, a heating zone, a means for connecting, a means for utilization, and a means for heating; b) said lower part containing a liquefied phase of said gas; c) s

What is claimed is: 1. A system for delivering gas stored in a vessel, wherein: a) said vessel comprising a lower part, an upper part, a shell, a heating zone, a means for connecting, a means for utilization, and a means for heating; b) said lower part containing a liquefied phase of said gas; c) said upper part containing a gaseous phase of said gas; and d) said heating zone comprising an electrically conductive element selected from the group consisting of said liquefied gas, said shell, and said liquefied gas and said shell; wherein said means for heating comprises an electromagnetic induction means capable of creating an alternating magnetic field in said heating zone so as to heat said heating zone; and wherein said electromagnetic induction means further comprises a magnetic element installed thereon and adapted to concentrate said magnetic field toward said electrically conductive element. 2. The system of claim 1, wherein said vessel receives said gas in liquefied form. 3. The system of claim 1, wherein said alternating magnetic field is produced using an electric generator operating at a frequency between 50 Hz and 4 MHz. 4. The system of claim 3, wherein said electric generator supplies several inductors. 5. The system of claim 1, wherein said vessel is placed on a scale to monitor the liquid level therein. 6. A system for delivering gas stored in a vessel, wherein: a) said vessel comprising a lower part, an upper part, a shell, a heating zone, a means for connecting, a means for utilization, and a means for heating; b) said lower part containing a liquefied phase of said gas; c) said upper part containing a gaseous phase of said gas; and d) said heating zone comprising an element selected from the group consisting of said liquefied gas, said shell, and said liquefied gas and said shell; wherein said heating zone further comprises electrically conductive elements; wherein said means for heating comprises an electromagnetic induction means capable of creating an alternating magnetic field in said heating zone so as to heat said heating zone; wherein said vessel is placed on a scale to monitor the liquid level therein; and wherein a sheet of electrical conductor is placed between said electromagnetic induction means and said scale to protect said scale from magnetic field disturbances. 7. The system of claim 1, wherein said heating means comprises at least one turn of a conductor. 8. The system of claim 7, wherein said conductor encircles at least 90% of a diameter of said vessel. 9. The system of claim 7, wherein each turn comprises a conducting wire having a thickness of at least 1 mm. 10. The system of claim 1, wherein said vessel is a tank, generally oriented vertically. 11. The system of claim 1, wherein said vessel is of the generally horizontally oriented "Ton-Tank" type. 12. The system of claim 1, wherein said vessel is a cylinder. 13. Utilization of the system of claim 1 to provide a gas to a point of utilization at a pressure above the equilibrium pressure of the gas with the liquid in the tank at ambient temperature. 14. Utilization of the system of claim 1 to increase the flow rate of the gas without substantially increasing the temperature of the walls of the vessel.