Measurements of grease emission and heat generation rates of electric countertop appliances (RP-1631, part 1)

The main objectives of this research were to improve the understanding of the characteristics of the grease emission and heat generation from electric countertop appliances, and to determine the amount of grease particulate/vapor production as well as sensible and latent heat gains from 20 commercial electric countertop appliances under cooking conditions. The grease particulate and vapor were captured by a Type II hood, and the concentrations were measured using EPA Method 5 in the exhaust duct under an exhaust flowrate of 0.24 m3/s (500 cfm). An energy balance protocol was used to determine the heat generation of these appliances during both idle and cooking conditions. The results indicate that the rate of grease particle and vapor emissions concentration for the 20 appliances tested ranged from 0.12 to 8.27 mg/m3. Only three appliances, the hot plate range, rapid cook oven (cooking with chicken wings or pizzas), and hot dog roller, generated more than 5 mg/m3 of grease at 0.24 m3/s (500 cfm) exhaust f...