Patent ID: 7073339

Claim:
An economizer circuit assembly for a cryogenic liquid vessel assembly, said cryogenic vessel assembly including a first, outer shell and a second, inner shell defining a storage space, said storage space having a liquid in a liquid space and a vapor in a vapor space, said vapor and said liquid being at, or about, the same saturation pressure, said cryogenic vessel having a delivery line extending from outside said first, outer vessel shell into said liquid space, said delivery line structured to draw liquid from said liquid space and pass a flow of said liquid through said delivery line, said economizer circuit assembly comprising: a vent line extending from outside said first, outer vessel shell into said cryogenic vessel and having a first end and a second end, said first end disposed in said vapor space; an integration device structured to integrate gas bubbles into a flow of liquid; said vent line and said delivery line coupled, and in fluid communication at, said integration device; and; whereby gas from said vapor space is integrated into said liquid flow in the form of bubbles.