This product is a zip file that contains files that consist of PowerPoint slides synchronized with the audio-recording of the speaker, PDF files of the slides, and audio only (mp3 format) as noted.
Energy efficiency of refrigerating and air-conditioning systems has gained substantial attention over the past decades. This seminar discusses some of the contributions of heat exchanger technology in the continuous improvement of HVAC&R equipment heat transfer efficiency. This session reviews the impacts of historical advancements and recent innovations in tube enhancements for shell-and-tube heat exchangers. Next, the results of a study comparing calculated tube performance using the conventional LMTD method and a recommended new approach-the axial resistance-varying method are presented. Finally, the mechanism and efficiency gain of ammonia boiling in a vertical tube bundle is discussed.
1. Advances in Heat Transfer Using Enhanced Chiller Tubes
Andreas Knoepfler, Associate Member, Wieland-Werke AG, Ulm, Germany
2. An Axial Resistance-Varying Method for Improved Quantification of Enhanced Surface Condenser Tube Performance
Cameron Nelson, Associate Member, Johnson Controls Inc, New Freedom, PA
3. Boiling of Ammonia in a Vertical Enhanced Tube Bundle Under Annular Flow
Adnan Ayub, P.E., Member, Isotherm, Inc., Arlington, TX
| File Size : | 1
file
, 38 MB |
| Note : | This product is unavailable in Russia, Belarus |
| Product Code(s) : | D-OR20Sem67 |
| Published : | 2020 |
