公开(公告)号：WO2022191916A1

公开(公告)日：2022-09-15

申请号：PCT/US2022/011782

申请日：2022-01-10

Applicant: PRAXAIR TECHNOLOGY, INC.

Inventor： LIANG, Chao ,  ROSEN, Lee J. ,  POTRATZ, Seth A. ,  TUO, Hanfei ,  RANJAN, Rakesh

IPC: F17C9/02

Abstract: A vaporization system and control method are provided. Liquid cryogen is provided to first ambient air vaporizer (AAV) units. When an output superheated vapor temperature is less than a threshold, the liquid cryogen is provided to second AAV units. When greater than or equal to the threshold, it is determined whether the second AAV units are defrosted. When defrosted, the liquid cryogen is provided to the second AAV units. When not defrosted, it is determined whether ice has formed on the first AAV units. When not formed, it is again determined whether the superheated vapor temperature is less than the threshold. When formed, it is determined whether a current ambient condition is favorable to defrosting the second AAV units. When not favorable, the liquid cryogen is provided to the second bank of AAV units. When favorable, it is again determined whether the superheated vapor temperature is less than the threshold.

公开(公告)号：WO2020091855A1

公开(公告)日：2020-05-07

申请号：PCT/US2019/041098

申请日：2019-07-10

Applicant: PRAXAIR TECHNOLOGY, INC.

Inventor： VAZE, Aditya ,  POTRATZ, Seth A.

IPC: F16L59/14 ,  F16L59/18 ,  F16L59/08 ,  F16L59/06 ,  F16L59/065 ,  F16L59/12

Abstract: A modular, aerogel-based vacuum insulated pipe section (10) comprising an outer conduit (12); an inner conduit (22) concentrically disposed within the outer conduit (12) with aerogel insulation (30) and a condensable gas being disposed in the insulation space (20) between the concentric conduits (12, 22). As a stand-alone pipe section (10), the insulation space (20) is at a pressure within the range of from about 100 microns Hg to about 1000 microns Hg. However, in operation, when a cryogenic fluid is traversing the inner conduit (22), the condensable gas condenses and the pressure within the insulation space (20) is further reduced to range of from about 1 microns Hg to about 5 microns Hg. The vacuum insulated pipe section (10) further includes a coupling arrangement disposed on a first end (52) of the inner conduit (22) and a second end (54) of the inner conduit (22), the coupling arrangement configured to engage or mate with a corresponding end of another modular vacuum insulated pipe section.