Pollutant Removal Efficiency of Residential Cooking Exhaust Hoods

Conference · Fri Jul 01 04:00:00 EDT 2011

OSTI ID:1048291

Singer, Brett C; Sherman, Alexander D; Hotchi, Toshifumi; Sullivan, Douglas P

Capture efficiency (CE) of exhaust from a natural gas cooking range was quantified for three common designs of residential range hoods in laboratory experiments: (A) microwave exhaust combination; (B) short hood with grease-screen-covered air inlet at bottom; and (C) deep, open hood exhausting at top. Devices were evaluated at varying installation heights, at highest and lowest fan settings, and with the hood installed 15 cm away from back wall with intent to improve CE for front burners. Each configuration was evaluated for the oven and for three cooktop burner combinations (two back, two front, one front and one back). At highest fan settings and standard installation against the wall, Hoods A and C captured back cooktop burner exhaust at > 90 percent and Hood B at > 80 percent. In this configuration, CE for front burner exhaust was 73-78 percent for Hoods A and C but only 46-63 percent for Hood B. CEs followed similar patterns but were substantially lower on the lowest fan speed. Installing the hood away from the wall improved CE for oven and front burners on Hood A at low speed, but substantially reduced CE for back burners for all hoods at low and high speed.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Environmental Energy Technologies Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1048291
• Report Number(s): LBNL-4902E
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR
BLOWERS
BURNERS
CONFIGURATION
Carbon monoxide
Nitrogen dioxide
Range Hood
Unvented combustion
Ventilation
EFFICIENCY
INDOOR AIR POLLUTION
NATURAL GAS
OVENS
POLLUTANTS
REMOVAL