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PIV Measurement of Flow Inside of HVAC Blower Unit  

Ji, Ho-Seong (Department of Mechanical Engineering, Pohang University of Science and Technology)
Kim, Bo-Ram (Department of Environmental Engineering, Pohang University of Science and Technology)
Lee, Sang-Joon (Department of Mechanical Engineering, Pohang University of Science and Technology)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.15, no.5, 2007 , pp. 165-173 More about this Journal
Abstract
Flow characteristics inside a blower unit of an automotive HVAC module were investigated experimentally using a high-resolution PIV technique. The PIV system consists of a 2-head Nd:YAG laser, a high-resolution CCD camera, optics and a synchronizer. The prototype siroco-fan with forward-curved blades was operated under the same condition of real car. The scroll casing was made transparently for capturing clear flow images. The time-averaged velocity fields were measured in three cross sections. Flow is accelerated with going toward the outer wall of scroll due to centrifugal force and large pressure gradient formed in the region between the fan and the outer casing wall. The presence of the cut-off region and diffusing duct of fan outlet influences largely the flow structure inside the blower unit.
Keywords
HVAC; PIV; Sirocco fan; Scroll; Flow visualization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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