CFD SIMULATION ON KITCHEN LAYOUT, SHAPE OF EXHAUST HOOD AND HEATING SYSTEM

Indoor temperature and air distributions of house kitchens and adjacent living rooms (Part 3)

Abstract

In the previous paper, CFD modeling of thermal plume over a cooking range was studied. The results of CFD simulation agreed with experimental results when measured velocity of thermal plume was given in CFD. The previous paper also shows that CFD is excellent method to study house kitchen ventilation as well as experiments. In this paper, indoor temperature distribution and capture efficiency of exhaust hood are examined under heating condition with CFD results to study appropriate ventilation and heating method. The capture efficiency affects indoor environment of house kitchens and living rooms and varies by kitchen layout, shape of hood and heating system. Main results of this paper are as follows. In an island type kitchen, thermal plume can be disturbed easily by airflow from room air-conditioner, therefore heat and moisture generated by cooking operation flow into the living room. The capture efficiency of flat type exhaust hood depends on heat generation rate of cooking ranges. When the shape of exhaust hood is improved, the capture efficiency can be increased. When the floor heating is applied, indoor air velocity is low so that the capture efficiency becomes high even in an island type kitchen.