IIR document

Study of coating effects on variable profile annular fins when subjected to dehumidifying operating conditions.

Author(s) : PASHAH S., ZUBAIR S. M., ARIF A. F. M.

Type of article: Article, IJR article

Summary

The coating effects on variable profile annular fins, subjected to dehumidifying operating conditions are studied. The coating has a uniform layer thickness over the entire fin free surface including tip, i.e. non-insulated tip condition is considered. The studies are conducted numerically by a non-dimensional axisymmetric finite element formulation. A piecewise linear relationship is used in the formulation to account for the non-linear psychrometric correlation between temperature and humidity ratio. It is demonstrated that the coating resistance effects are governed by a single dimensionless parameter called coating Biot number. A limiting value of the parameter is identified for which coating resistance effects become negligible. The presented non-dimensional formulation can be used to study other types of fins i.e. spines and longitudinal under partially and fully wet conditions. Similarly, more complicated cases like multiple coating layers and interface resistance at the fin base can also be studied.

Available documents

Format PDF

Pages: 60-70

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Study of coating effects on variable profile annular fins when subjected to dehumidifying operating conditions.
  • Record ID : 30012599
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 48
  • Publication date: 2014/12

Links


See other articles in this issue (23)
See the source