Thermodynamics of liquid-vapour two-phase draft tubes for liquefied gas expanders

Widodo Wahyu Purwanto, Chen H. Chiu, Yoshitsugi Kikkawa, Atsushi Mukaiboh, Hans E. Kimmel, Eginhard Berger

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In modern refrigeration process plants the liquefaction of gases is achieved at high pressure to improve the overall efficiency of the cryogenic process. After the condensation of the refrigerated gas the pressurized liquefied gas is expanded across a liquid-vapor two-phase expander to a lower pressure suitable for storage and transportation of the liquefied gas. The expansion process generates a certain amount of vapor and the remaining liquid is cooled down. By employing a two-phase draft tube at the exit of the two-phase expander, an increase in the amount of liquid is accomplished. A discussion covers the fluid dynamic operation and the thermodynamic performance of two-phase draft tubes; expansion of saturated liquefied gas; and the amount of vapor at the outlet of the draft tube. This is an abstract of a paper presented at the 42nd Loss Prevention Symposium (New Orleans, LA 4/6-10/2008).

Original languageEnglish
Title of host publication2008 AIChE Spring National Meeting, Conference Proceedings
Publication statusPublished - 23 Dec 2008
Event2008 AIChE Spring National Meeting, Conference - New Orleans, LA, United States
Duration: 6 Apr 200810 Apr 2008

Publication series

Name2008 AIChE Spring National Meeting, Conference Proceedings

Conference

Conference2008 AIChE Spring National Meeting, Conference
CountryUnited States
CityNew Orleans, LA
Period6/04/0810/04/08

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