Multiple-hole effect on the performance of a sparger during direct contactcondensation of steam

Citation
S. Cho et al., Multiple-hole effect on the performance of a sparger during direct contactcondensation of steam, KSME INT J, 15(4), 2001, pp. 482-491
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
KSME INTERNATIONAL JOURNAL
ISSN journal
1226-4865 → ACNP
Volume
15
Issue
4
Year of publication
2001
Pages
482 - 491
Database
ISI
SICI code
1226-4865(200104)15:4<482:MEOTPO>2.0.ZU;2-Y
Abstract
An experimental study has been carried out to investigate an I-type sparger performance in view of pressure oscillation and thermal mixing in a poor. Its pitch-to-hole diameter, P/D, varies from 2 to 5. The test conditions ar e restricted to the condensation oscillation regime. In the present study, two different hole patterns, staggered and parallel types, are employed und er various test conditions. The amplitude of the pressure pulse shows a pea k for pool temperatures of 45 similar to 85 degreesC. which depends on P/D and the steam mass flux. The effect of hole pattern on the pressure load is smaller than that of P/D. The dominant frequency increases with the subcoo ling temperature of pool water and P/D. A correlation for the dominant freq uency is proposed in terms of the pitch-to-hole diameter ratio and other di mensionless thermal hydraulic parameters.