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ACRC Technical Report 153PDF


Title:An Investigation of the Performance of Confined, Saw-Tooth Shaped Wire-on-Tube Condensers
Author(s):Petroski, S.J.
Contributor(s):Clausing, A.M.
Subject(s):wire condensers
tube condensers
Abstract:This thesis presents the results of an experimental investigation of the performance of several saw-tooth shaped wire-on-tube condensers with respect to a forced air flow. The condensers were confined in a variable height wind tunnel test section and subjected to free-stream velocities ranging from 0.2 to 2.0 mls (0.66 to 6.6 ft/s). An overall energy balance was applied to the 'refrigerant' (water for this study) giving the total heat transfer rate from the condenser. The heat loss due to radiation was estimated and accounted for, as was the fin efficiency of the wires. As a result, the air-side convection heat transfer performance was determined and compared for each of the condensers. To get a more complete understanding of the performance, the air pressure drop through the condensers also was measured, which allowed the calculation of the fan power required to cool the coils. Influences of condenser orientation (\jI = 0 for air flow normal to the wires and \jI = nl2 for air flow normal to the tube passes), saw-tooth amplitude, wire spacing, and clearance (degree of confinement) on the performance were determined in this investigation.
Issue Date:1999-08
Publisher:Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Air Conditioning and Refrigeration Center TR-153
Genre:Technical Report
Sponsor:Air Conditioning and Refrigeration Project 67
Date Available in IDEALS:2009-05-26
Identifier in Online Catalog:4259476

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