Laboratory Energy Conservation

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Laboratory Energy Conservation

  1. 1. Laborator Energy Conservation for Green Drinks Shanghai Victor Neuman, PE, MSME 9th August 2012
  2. 2. Speaker Biography• Victor Neuman, Professional Engineer. for Schneider Electric, China• Master’s of Science, Engineering, SDSU and also CPGS, Cambridge University• Lab Building Designer with Earl Walls Assoc., 100+ lab buildings designed
  3. 3. Safety Is our First Concern• Energy and the Environment were my first priorities when I became a lab designer in 1983. Safety of building occupants became my first concern with cost reduction second.• What if we don’t do it right? Widow of lab worker at Firestone of Texas receives $11 million in 1990.• At University of California campus, engineering firm goes broke when 7’ tall fume exhaust fans blow toxic chemical vapors back into air handlers.
  4. 4. Energy of One hood = 3 houses(courtesy of Dale Sartor, Lawrence Berkeley National Lab, USA) =
  5. 5. Example of Costs and Savings• Base Case: 50 hoods at 1200 cfm each, $3/ cfm per year = $180,000 per yr. total• Low Flow Hoods: 50 hoods at 720 cfm each at $3/cfm per year = $108,000. Payback: 1.25 yrs• VAV hoods: 1200 cfm for 50 hoods for 1000 hours per yr., 600 cfm for 1000 hrs/yr, 300 cfm for 6,760 hours /yr = $67,000 per year. Payback: 2.65 years
  6. 6. The Three Curves of Lab AirflowAC/HR 20 Fume Exh. 16 12 8 Cooling CFM 4 Min.Vent Midnight Noon Midnight 24 Hour Cycle
  7. 7. VAV Lab Control Diagram
  8. 8. Advanced Low Flow Fume Hoods• Safe at face velocities of .3 m/s• Tracer Gas Tested – ASHRAE 110
  9. 9. Lower Volumes of Exhaust May Cause Re-Entry of FumesEven when the hazard is down wind, the chemicals can still spread to the intakes.
  10. 10. EF-1 through 5 Constant VolumeStepped CV Active VAV Passive VAV Annual Energy Costs Stepped Passive Active CV CV VAV CV $112,758 $68,470 $55,051 $55,051
  11. 11. Lab Design References• Labs21st Century Guidelines• California Title 8, Section 5154.1• Lab Design Newsletter/ R& D Magazine Annual Reference Guide• ANSI/AIHA Z9.5 “Lab Ventilation”• ASHRAE 110 & Handbook• US NRC, “Prudent Practices for Handling Chemicals”• US OSHA 29 CFR 1910.1450• NFPA 45: Fire Protection for Labs
  12. 12. Questions and Discussion?For Further Information, please contact:Victor.Neuman@schneider-electric.com

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