Abstract
In the previous paper, CFD simulations and experiments were conducted to study the displacement ventilation system with ceiling supply openings (hereafter DV system) in commercial kitchens. The results showed that the DV system reduced the influence of airflow supplied from diffusers on thermal plume over kitchen appliances so that the capture efficiency of exhaust hood was high and the kitchen can be maintained good thermal condition. This paper presents the results of field measurement of the thermal environment and the energy consumption in a real kitchen where the DV system was applied. The results shows that the DV system can improve thermal environment in the real kitchen and can save energy consumption for HVAC system. Even if the ventilation rate was decreased in the DV system, the thermal environment was almost same as conventional local cooling system with larger ventilation rate. This paper also shows that the estimated cooling period with outdoor air of the DV system was much longer than that of the conventional one.
