Fan Efficiency Grades and Their Effects on Laboratory HVAC Systems

Ronald Wendorski, P.E., Greenheck Fan Corporation

Fan efficiency grades, as stated in the Air Movement and Control Association (AMCA) Standard 205-10 (Energy Efficiency Classification for Fans), are becoming an important part of how consumers select HVAC equipment. In addition, induced flow fans will be subject to fan efficiency grade calculations due to the recent addition of total efficiency calculations in AMCA Standard 260 (Laboratory Methods of Testing Induced Flow Fans for Rating). Current and upcoming building codes will require minimum fan efficiency grades (FEG) when selecting HVAC equipment. The content of the presentation will include the following discussions:

  • How fan efficiency grades are calculated.
  • How to select fans to ensure requirements are met.
  • FEG calculations for induced flow fans.
  • ASHRAE 90.1 and International Green Construction Code (IGCC) requirements for minimum fan efficiency grades.
  • FEG comparison of field built-up lab exhaust systems versus pre-engineered systems.
  • What these changes mean to the industry, specifying engineers, end users, and owners.

Biography:

Ronald Wendorski heads the Greenheck Laboratory Exhaust Systems Engineering Department, which is responsible for new product development, product certification, product customization, and field support of Greenheck laboratory exhaust fans. Mr. Wendorski has 11 years of experience in commercial, institutional, and industrial HVAC product development. Mr. Wendorski is an active member of ASHRAE and AMCA, including ASHRAE Technical Committee 9.10 Laboratory Systems and the AMCA 260 Technical Review Committee. Mr. Wendorski is also vice chair of the Wausau Engineering and Global Leadership Academy Governance Council. Mr. Wendorski holds a Bachelor of Science in mechanical engineering from Milwaukee School of Engineering, a Masters of Science in project management from the University of Wisconsin Platteville, and is a registered professional engineer in the state of Wisconsin.