This product is a PDF that contains links to files that consist of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) as noted.

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)