Abstract

Some results are presented of experimental and theoretical research of hydrodynamics and heat transfer during condensation of water steam (both stationary and slowly moving) on twisted profile tubes (TPT). For a heat transfer coefficient during condensation of stationary steam on TPT two characteristic areas were observed. At small values of condensate film Reynolds numbers a TPT heat transfer coefficient can be 10–15% below that of the plain tubes depending on profile parameters. With the rise of both condensate film Reynolds number and profile parameter h/s heat transfer coefficient increases up to 50% in comparison to a plain tube. During slowly moving steam condensation the TPT heat transfer coefficient increases up to 70% as compared to a plain tube. Conducted research and industrial tests results showed that the assured effect of a heat transfer coefficient increase in TPT heat exchangers could reach for turbine condensers 15%, for low cycle heaters 35–40%. The heat exchangers hydraulic resistance increases by 40–70%.

Details

Title
Heat Transfer Augmentation During Water Steam Condensation On Twisted Profile Tubes
Author
Brodov, Yu M; Aronson, K E; A. Yu. Ryabchikov; Nirenstein, M A
Pages
479-490
Publication year
2014
Publication date
2014
Publisher
W I T Press
ISSN
1746-448X
e-ISSN
1743-3541
Source type
Other Source
Language of publication
English
ProQuest document ID
2258177173
Copyright
© 2014. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the associated terms available at https://www.witpress.com/elibrary .