LABORATORY FUME HOOD ENERGY MODEL

Scoping estimate of aggregate savings potential for energy-efficient, high-performance fume hoods

Fume Hood Energy Savings Potentials

PER-HOOD VALUES United States* California
   Electricity Use (kWh/year)34,87129,326
   Peak electricity demand (kW)6.746.74
   Fuel use (BTU/year)257,941,651211,802,497
   Annual energy cost per hood ($)
      Total4,9275,705
      $/CFM3.954.57
MACRO-SCALE BASELINE ENERGY USE
   Number of Hoods 750,00085,000
   Total Electricity (GWh/year)26,1532,493
   Total Peak Power (MW) 5,057573
   Total Natural Gas (Trillion BTUs/year)19318
   Total Energy Cost ($ Million/year)3,695485
MACRO-SCALE ENERGY SAVINGS
   Per-hood energy savings**50%50%
   Maximum potential market penetration75%75%
 
   Electricity ($M/year)687112
   Demand ($M/year)22826
   Natural Gas ($M/year)47244
 
   Total Energy Savings ($ Million/year)1,386182
   Total Electricity Savings (GWh/year)9,808935
   Total Peak Power savings (MW)1,896215
   Total Heating Fuel Savings (TBTU)737

Notes

Assumptions: No electric reheat, 7x24 operation, 6-foot nominal hood opening, basecase hood = 100fpm face velocity

Default system variables as shown on main calculator page. Us average electricity price $0.07/kWh; California $0.12. Gas $6.50/MBTU

* US average weather conditions modeled as average of Los Angeles, Chicago, Miami, and New York

** Estimate is conservative given that R&D goal is to reduce air flow 75% (to 25%) and theoretical fan savings is a cubed function (a 50% reduction in flow would result in over an 80% savings in fan HP). This conservatism balances existing use of VAV hoods, and the potential that fume hood exhaust may drop below general lab exhaust requirements.

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