Horizontal tube evaporators: Part I. Theoretically-based correlations

✍ Scribed by G. Kocamustafaogullari; I.Y. Chen

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 436 KB
• Volume: 16
• Category: Article
• ISSN: 0735-1933
• DOI: 10.1016/0735-1933(89)90053-5

✦ Synopsis

Based on previous studies carried out by the authors, theoreticallybased correlations are developed for predicting the internal condensation and external evaporation heat transfer coefficients which can be used for the there1 perfor~nce of horizontal tube evaporators. It Is shown that the evaporation heat transfer outside tubes in a tube bundle can be correlated in terms of fi]m Reynolds nun~er, Prandtl number, dimensionless tube spacing, and pipe diameter.

It is also shown that the evaporation heat transfer in a tube bundle decreases from the first tube until a fully-developed region is reached. On the other hand, the condensation heat transfer inside tubes is correlated in terms of Kutateladze number, Galileo number, vapor and liquid phase superficial Reynolds number and the dimensionless pipe length.

Comparisons of the present predictions and experimental results are made and found to be in good agreement.