Seminar 33 -- Recent ASHRAE Research in Air-to-Refrigerant Heat Exchangers ✓ Most Recent

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Recently ASHRAE sponsored two research projects which are nearing completion related to design and performance of air-to-refrigerant heat exchangers. The research projects deal with a) oil retention characteristics of microchannel heat exchangers and b) air side performance of louvered heat exchangers in low-Reynolds number operation. Both are of significant impact in modern HVAC equipment due to increasing adoption of microchannel heat exchangers.

1. Effect of Oil Retention on the Refrigerant-Side Heat Transfer Capacity and Pressure Drops of Microchannel Condensers for AC and Refrigeration Systems
Ardiyansyah S. Yatim, Associate Member, Lorenzo Cremaschi, Ph.D., Member
Product Contains: Slides (pdf), Recorded Presentation, Audio (mp3)

2. An Experimental Investigation of Microchannel Heat Exchangers at Low Air-Side Reynolds Numbers
Cheng-Xian (Charlie) Lin, Ph.D., Member, Pradeep Shinde, Student Member
Product Contains: Slides (pdf), Recorded Presentation, Audio (mp3)