Programs for the Dallas Meeting (January 27 - 31, 2007):
Seminar 31: Method for Resolving Fan/Motor Vibration Problems
Monday, January 29, 2007 9:30 to 10:30 AM
Sponsor: TC 05.01 Fan Design and Application, TC 05.09 Enclosed Vehicular Facilities
Chair: Asesh Raychaudhuri, PE, Member, FMC-NA, Sharon, MA
From ASHRAE Technical Program Description:
Discussion includes finite element techniques to investigate the vibration response charcteristics of a typical fan/motor assembly used in air conditioning units.
Results from models with different combinations of solid and beam elements for the rotor shaft and solid lumped mass elements for the rotor mass are compared to each other and to experimental results.
Research results of the effects of bearing constraints applied to the rotor shaft are discussed.
1. Method for Resolving Fan/Motor Vibration Problem in Air-Conditioning Units
Douglas Reynolds, Ph.D., Member, University of Nevada, Las Vegas, Las Vegas, NV
2. Effect of Shaft Rotation on Resonant Frequencies
John Murphy, Ph.D., Member, Jogram Inc., New Philadelphia, OH
Forum 10: Will 90.1 Help to Conserve Fan Energy?
Wednesday, January 31, 2007 9:30 to 10:30 AM
Sponsor: TC 05.01 Fan Design and Application
Moderator: Charles W. Coward, Jr., Fellow, Waddell Engineering Co., Moorestown, NJ
From ASHRAE Technical Program Description:
One goal of 90.1 is to help reduce the energy consumption of buildings and the fans that heat and cool the building.
But do the 90.1 guidelines help the designer to properly select fans, or do these guidelines just make proper fan selectn more difficult?
This forum discusses how alternative fan selection methods will help the designer meet 90.1 goals as well as meet the building needs.
Programs from the Quebec Meeting (June 24 - 28, 2006):
Seminar 36: Advances in Fan Analysis and Design Methods
Monday, June 26, 2006 10:45 to 12:15 AM
Sponsor: TC 05.01 Fan Design and Application, TC 05.09 Enclosed Vehicular Facilities
Chair: Asesh Raychaudhuri, PE, Member, FMC, Inc., Sharon, MA
From ASHRAE Technical Program Description:
Aerodynamic efficiency and noise estimation using the state-of-the-art analytical.computational techniques are discussed.
Design of high-efficiency industrial ceiling fans including the use and validity of CFD tools are addressed, along with a combined CFD and experimental
program designed to address the fluid mechanics of flow-interaction between an axial flow fan and a high resistance medium (HRM).
In particular, the physics of fan performance alteration in the presence of the HRM is included. This seminar also addresses the
the basics of axial fan acoustics including a computational model that addresses the interaction between inflow velocity distortion and fan geometry.
1. Design Methods to Increase Efficiency of Large Industrial Ceiling Fans
Richard Aynsley, Ph.D., Member, Big Ass Fans, Lexington, KY
2. Fluid Dynamics of Highly-Coupled Fan and Filter/Heat-Exchanger
Thong Dang, Ph.D., Syracuse University, Syracuse, NY
3. Axial Fan Acoustics: Basic Principles to Applications
Michael Brendel, Ph.D., Member, Lau Industries, Dayton, OH
Seminar 53: Fundamentals of Fan Systems
Tuesday, June 27, 2006 9:30 to 10:30 AM
Sponsor: TC 05.01 Fan Design and Application, TC 05.09 Enclosed Vehicular Facilities
Chair: Asesh Raychaudhuri, PE, Member, FMC, Inc., Sharon, MA
From ASHRAE Technical Program Description:
Several criteria exist for fan selection for a specific application, including high thermodynamic efficiency,
low sound, low cost, high temperature construction, balancing, low vibration and maintenance. Of course, no one fan can satisfy all
of the above. This seminar discusses the process to achieve the best selection for the specific application.
1. Fan Selectino Basics for Different Applications
Rad Ganesh, Ph.D., PE, Member, Twin City Fan Companies, Plymouth, MN
2. Mechanical Aspects of Fan Selection
John Cermak, Ph.D., PE, Member, ACME Engineering & Manufacturing, Muskogee, OK
