NDLI: Measurements of Mean Heat Transfer Coefficients for Turbulent Forced Convection in a Rectangular Duct With Uniformly Spaced Plate Inserts

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Camargo, Lorena Gitsham, Matthew Baliga, B. Rabi
Copyright Year	2009
Abstract	An experimental investigation of turbulent forced convection from single and multiple heated plates in the spatially-periodic fully-developed region of air flows in a straight rectangular duct with uniformly spaced plate inserts is described. The focus in this work is on measurements of temporally- and spatially-averaged heat transfer coefficients on the surfaces of the aforementioned plates. The experimental technique is based on a lumped parameter analysis. Six different heated plates were specially designed, constructed, and instrumented for this work. Each of these heated plates was made up of a central metal section (brass, aluminum, or copper) and two plastic end sections (Ertalyte): the metal section was constructed from a top part and a bottom part, with grooves milled in the bottom part to accommodate three thermocouples and an electrical heating wire; the plastic sections were used to reduce the rates of heat loss from the ends to negligible amounts compared to that due to forced convection from the lateral surfaces of the metal section to the air. The Reynolds number used in the presentation of the results is based on the time-mean average streamwise velocity in the minimum cross-sectional area of the duct and a hydraulic diameter: its values ranged from 2,000 to 30,000. Details of the experimental technique used and the results obtained are presented and discussed.
Sponsorship	Heat Transfer Division
Starting Page	573
Ending Page	582
Page Count	10
File Format	PDF
ISBN	9780791843574
DOI	10.1115/HT2009-88510
e-ISBN	9780791838518
Volume Number	Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer
Conference Proceedings	ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
Language	English
Publisher Date	2009-07-19
Publisher Place	San Francisco, California, USA
Access Restriction	Subscribed
Subject Keyword	Forced convection Turbulence Ducts Aluminum Metals Heat losses Reynolds number Thermocouples Wire Brass (metal) Air flow Heating Plates (structures) Copper Heat transfer coefficients
Content Type	Text
Resource Type	Article

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