Ambient air vaporizer and heater for cryogenic fluids
US5251452A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Mar 16, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/05
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A single pass ambient air heat exchanger for vaporizing and heating cryogenic liquids includes a plurality of vertically mounted and parallel connected heat exchange tubes. Each tube has plurality of external fins and a plurality of internal peripheral passageways symmetrically arranged about and in fluid communication with a central opening, preferably circular in cross section. A solid bar or rod extends within the central opening for a predetermined length of each tube to increase the rate of heat transfer between the cryogenic fluid in its vapor phase and the ambient air as compared to the rate of heat between the fluid in its vapor phase and the air in an unblocked tube so that the fluid is raised from its boiling temperature at the bottom of the tubes to a temperature at the top suitable for manufacturing and other operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.