Performance Assessment of U.S. Residential Cooking Exhaust Hoods

Performance Assessment of U.S. Residential Cooking Exhaust Hoods

TitlePerformance Assessment of U.S. Residential Cooking Exhaust Hoods
Publication TypeJournal Article
Year of Publication2012
AuthorsDelp, William W., and Brett C. Singer
JournalEnvironmental Science & Technology
Volume46
Issue11
Pagination6167-6173
Date Published05/08/2012
KeywordsRange Hood Test Facility
Abstract

This study assessed the performance of seven new residential cooking exhaust hoods representing common U.S. designs. Laboratory tests were conducted to determine fan curves relating airflow to duct static pressure, sound levels, and exhaust gas capture efficiency for front and back cooktop burners and the oven. Airflow rate sensitivity to duct flow resistance was higher for axial fan devices than for centrifugal fan devices. Pollutant capture efficiency (CE) ranged from <15% to >98%, varying across hoods and with airflow and burner position for each hood. CE was higher for back burners relative to front burners, presumably because most hoods covered only part of the front burners. Open hoods had higher CE than those with grease screen and metal-covered bottoms. The device with the highest CE—exceeding 80% for oven and front burners—had a large, open hood that covered most of the front burners. The airflow rate for this hood surpassed the industry-recommended level of 118 L·s–1 (250 cfm) and produced sound levels too high for normal conversation. For hoods meeting the sound and fan efficacy criteria for Energy Star, CE was <30% for front and oven burners.

DOI10.1021/es3001079
LBNL Report Number

LBNL-5545E