Fume Hood Operation and User Impacts on Sustainability - A Case Study

John McDonald, Integral Group

A university is looking to renovate two teaching / research facilities, each over 600,000 SF and is trying to achieve best value in first construction costs and operational costs. Given the program contains various room types (teaching to research), of various areas, and number of hoods in the room types vary from 1-4 hoods in research labs and 4-9 hoods in teaching labs to provide the optimized value:
What is the best application of variable volume vs. constant volume fume hoods?
What is the best application of fume hood face velocity?
What other strategies, occupancy sensors, sash closures, User education, user inducements?

The focus of this presentation will be in presenting the Life Cycle Cost Analysis (LCCA) performed on this project when coupled with an Integrated Design Process (IPD) delivery method. The engineering behind evaluating each option across multiple variables, along with the construction cost information from the contracting part of the team, combined with energy modeling impacts will provide the background of this discussion.

Contingent on the success of any laboratory exhaust air control system is the compliance of the Users in the proper understanding and operation of the fume hoods. Good lab practice notes to close sashes when not in use, but most facilities struggle to implement this behavior, resulting in high energy bills. Part 2 of the discussion will focus on ways to improve this behavior via technology and or education to improve energy performance.

Learning Objectives

  • Participants will be able to identify the differences between CV and VAV fume hood operation at various face velocities, using a case study as an example
  • Participants will be able to estimate the energy impacts of the application of CV or VAV fume hoods at various face velocities, using a case study as an example
  • Participants will be able to estimate the energy impacts of the application of various sash closure options for fume hoods, using a case study as an example
  • Participants will be able to generalize the construction cost impacts of the application of various options for fume hood operation and control, using a case study as an example

Biography:

John McDonald is recognized as one of the leading green engineers for laboratories and animal facilities. Experience includes design and commissioning of multi-disciplinary facilities for biological, chemistry, forensics, genetics and behavioral sciences research; multi-species vivariums; cleanrooms, cGMP, ABSL-3, and BSL-3 facilities, Clients include: J.Craig Venter, Allergan, and Genentech. Overseas experience include: National University Singapore, and the Okinawa Institute of Science and Technology

 

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