|
|
Toshiya Iwamatsu, Ph.D., Central Research Institute of Electric Power Industry
|
|
|
Wataru Urabe, Central Research Institute of Electric Power Industry
|
The purpose of this research is to elucidate the influence of overhang of an exhaust hood on the capture and containment of the exhaust hood. The capture and containment performance depends on capturing and containing the thermal plume from cooking appliances. Larger exhaust hood openings seem more able to capture thermal plumes even if they expand due to air disturbance. However, provided that the ventilation rate is the same, the face velocity of exhaust hoods is low of the larger exhaust hood openings. This may prevent containment of the thermal plume from cooking appliances. We prepared an electric fryer and an electric noodle cooker. These devices are typical cooking appliances whose thermal plumes are weak and strong, respectively. The capture efficiencies of exhaust hoods were revealed, including the parameters of overhang length of exhaust hood and ventilation rate.
