Study on Optimization of Winter Ventilation Strategy for Newly Decorated Kitchen in Severe Cold Region

Abstract

The newly decorated kitchen is prone to the problem of excessive formaldehyde. For the severe cold regions, inadequate or unreasonable air supplement will affect the removal of pollutants or cause extremely uncomfortable temperature fields. This paper takes the ventilation of the kitchen ceiling as the research object and establishes the physical model of the typical residential kitchen. The CFD simulation software is used to simulate the pressure field, temperature field, and pollutant concentration field of the living building kitchen under the three types of ceiling air inlets, and the kitchen environment under the conditions of no ventilation (door and window penetration) and natural ventilation is analyzed. The ceiling ventilation method using natural pressure difference has better control effect on kitchen pollutants. The simulation results show that the kitchen static pressure fluctuates around −30 Pa under the condition of supplemental air, which prevents the kitchen smoke and smell from entering other rooms. Among them, the opening 3 has the best air distribution effect, the pollutant concentration is stable at 0.051 mg/m3, the temperature is stable at 278 K, and the stove flame will not have obvious swing. It provides a theoretical basis for improving the reasonable airflow organization of residential kitchens in cold region and creating the thermal comfortable environment suitable for kitchen staff.