NDLI: Optimum channel intrusion depth for uniform flow distribution at header-channel junctions

Content Provider	Springer Nature Link
Author	Lee, Jun Kyoung
Copyright Year	2010
Abstract	The ultimate goal of this work is to find the optimal condition for the even distribution of two-phase mixture at header-channel junctions simulating the corresponding parts of compact heat exchangers. The cross section of the header and the channels were 14 mm × 14 mm and 12 mm × 1.6 mm, respectively. Two different distances between channels (10 and 21.6 mm) and four different intrusion depths (0, 1.75, 3.5 and 7 mm) beyond the inner wall of the header were tested for the mass flux and the mass quality ranges of 70–165 kg/m$^{2}$s and 0.3–0.7, respectively. Air and water were used as the test fluids. The flow distribution pattern was relatively insensitive to the channel distance because the flow configuration inside the header remained almost unchanged. On the other hand, the distribution pattern was changed drastically with the intrusion depth of the channels. The optimum intrusion depth for even flow distribution was identified to be 1/8 of the hydraulic diameter of the header cross-section for the experimental conditions tested in the present work.
Starting Page	1411
Ending Page	1416
Page Count	6
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	24
Issue Number	7
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2010-07-20
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Flow distribution Header-channel junctions Distance between channels Intrusion depth Uniform flow distribution Industrial and Production Engineering Vibration, Dynamical Systems, Control Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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