 | | Scoping estimate of aggregate savings potential for energy-efficient, high-performance fume hoodsFume Hood Energy Savings Potentials
| PER-HOOD VALUES |
United States* |
California |
| Electricity Use (kWh/year) | 34,871 | 29,326 |
| Peak electricity demand (kW) | 6.74 | 6.74 |
| Fuel use (BTU/year) | 257,941,651 | 211,802,497 |
| Annual energy cost per hood ($) |
| Total | 4,927 | 5,705 |
| $/CFM | 3.95 | 4.57 |
| MACRO-SCALE BASELINE ENERGY USE |
| Number of Hoods | 750,000 | 85,000 |
| Total Electricity (GWh/year) | 26,153 | 2,493 |
| Total Peak Power (MW) | 5,057 | 573 |
| Total Natural Gas (Trillion BTUs/year) | 193 | 18 |
| Total Energy Cost ($ Million/year) | 3,695 | 485 |
| MACRO-SCALE ENERGY SAVINGS |
| Per-hood energy savings** | 50% | 50% |
| Maximum potential market penetration | 75% | 75% |
| |
| Electricity ($M/year) | 687 | 112 |
| Demand ($M/year) | 228 | 26 |
| Natural Gas ($M/year) | 472 | 44 |
| |
| Total Energy Savings ($ Million/year) | 1,386 | 182 |
| Total Electricity Savings (GWh/year) | 9,808 | 935 |
| Total Peak Power savings (MW) | 1,896 | 215 |
| Total Heating Fuel Savings (TBTU) | 73 | 7 |
|
| | |
|
| | NotesAssumptions: 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. |
| | |
|
