Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

HEAT TRANSFER CHARACTERISTICS OF CORRUGATED DUCTS WITH VARIABLE CORRUGATION ANGLE

Get access (open in a dialog) DOI: 10.1615/IHTC8.1410
pages 2879-2884

Abstrakt

The effect of corrugation angle on convective heat transfer in isothermal corrugated ducts was studied experimentally. The focus of the work was on two regions: the thermal-hydraulic entrance region and the periodically fully-developed region. The investigation was conducted via a mass transfer approach in conjunction with the well-known analogy between heat and mass transfer that could be employed to transform the results to heat transfer. This approach enabled us to evaluate the average transfer coefficients for the corrugation facets as well as those averaged over the cycle of corrugation. Throughout the investigation, the spacing between the parallel walls of the duct remained constant, but the corrugation angle and the flow Reynolds number varied, respectively, from 0 to 30 deg. and 4000 to 30000. To complement the heat (mass) transfer measurements, the pressure drops in the duct were measured and were subsequently employed to examine the effect of corrugation angle on the thermal-hydraulic performance of the duct under three constraints, namely, equal pumping power, equal pressure gradient, and equal mass flow.