Effects of fin pattern on the air-side heat transfer coefficient in plate finned-tube heat exchangers
The effects of air velocity, heat exchanger geometry, and fin patternation on air-side heat transfer in plate finned tube heat exchangers were investigated experimentally using a single-fin passage model. The geometric parameters considered included tube diameter, transverse tube spacing, longitudinal tube spacing, number of tube rows, and fin spacing. The effects of fin pattern depth and number of fin patterns per longitudinal tube row were investigated for a pattern consisting of corrugations of triangular cross-section transverse to the direction of airflow. The heat transfer data were correlated in terms of the dimensionless heat transfer coefficient (Nusselt number) based on the arithmetic mean temperature difference, Nu/sub a/, and the Graetz number, Gz, a dimensionless measure of the level of flow development.
- Research Organization:
- Westinghouse Electric Corp., Research and Development Center, 1310 Beulah Rd., Pittsburgh, PA (US)
- OSTI ID:
- 6367975
- Report Number(s):
- CONF-870620-
- Journal Information:
- ASHRAE Trans.; (United States), Journal Name: ASHRAE Trans.; (United States) Vol. 93:2; ISSN ASHTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
AIR FLOW
DESIGN
DIMENSIONS
EFFICIENCY
ENERGY TRANSFER
FINS
FLUID FLOW
GAS FLOW
GEOMETRY
HEAT EXCHANGERS
HEAT TRANSFER
MATHEMATICAL MODELS
MATHEMATICS
NUSSELT NUMBER
THERMAL EFFICIENCY