Seminar 71 -- From Frost Growth on Heat Exchangers to Psychrometrics Air Mixing Devices and HVAC Controls: Examples of Industry Research in STBE Journal Available to ASHRAE Members for Free PDF

This seminar provides an overview of selected research papers from the STBE journal. The speakers will first introduce an experimental study on frost formation with surface coatings for finned structures. Then an overview of a developed two-control quality factor for assessing the HVAC control loop performance will be discussed. Finally, a comprehensive study on air mixing devices and measurement techniques for psychrometric performance testing will be presented. These are examples of the variety and depth of the cutting-edge technical information and case studies in the HVAC&R industry that ASHRAE members can access through to the STBE articles.

• 1. Effect of Mixed Hydrophilic and Hydrophobic Surface Coatings on Droplets Freezing and Subsequent Frost Growth
  during Air Forced Convection Channel Flows
  Ellyn Harges and Lorenzo Cremaschi, Ph.D., Member, Auburn University, Auburn, AL
• 2. Development of Control Quality Factor for HVAC Control Loop Performance Assessment (ASHRAE RP-1587)
  Zheng O’Neill, Ph.D., P.E., Member, Texas A&M University, College Station, TX
• 3. A Literature Review of Air Mixing Devices for Psychrometric Performance Measurement Applications (ASHRAE RP1733)
  Christian K. Bach, Ph.D., Associate Member, Oklahoma State University, Stillwater, OK