Abstract
Heat transfer enhancement in a rectangular duct with semicircular cylinder turbulence promoters are investigated for high-Prandtl number fluid by the visualization of flow and measurement of the mass transfer coefficient, utilizing an electrochemical method. In this study, we newly introduced NTF, a normalized position of a turbulence promoter relative to the film thickness for a smoothed duct. The performance ratio, η, for semicircular cylinders with their arcs downward depends strongly on NTF and shows the highest value when just a small part of a promoter is in the film. Semicircular cylinders are found to be the most effective shape for heat transfer enhancement.
| Original language | English |
|---|---|
| Pages (from-to) | 189-195 |
| Number of pages | 7 |
| Journal | Kagaku Kogaku Ronbunshu |
| Volume | 18 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1992 |
Keywords
- Electrochemical Method
- Heat Transfer
- Heat Transfer Enhancement
- Performance Evaluation
- Turbulence Promoter
- Visualization
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering