Heat Transfer Augmentation During Water
Steam Condensation On Twisted Profile Tubes
Author(s)
Yu. M. Brodov, K. E. Aronson, A. Yu. Ryabchikov
& M. A. Nirenstein
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%.
Keywords: hydrodynamics, heat transfer, condensation, twisted profile tubes,
heat exchanger, efficiency.
Keywords
hydrodynamics, heat transfer, condensation, twisted profile tubes,
heat exchanger, efficiency.
Related Book
Other papers in this volume
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