Controllable baffle-type exhaust-hood in home kitchen

Abstract

In order to reduce the pressure of the central smoke shaft in high-rise apartments, a controllable baffle-hood was proposed to improve the smoke removal efficiency without increase the exhaust airflow rate in the kitchen. A series of baffle-type hoods with various locations and shape of panel were explored to evaluate the pollutant removal efficiency. The results showed that the baffle design reduces pollutant concentration by 8%–71% and lowers temperature by 0.8 °C–2.0 °C compared to conventional range hoods. A power function relationship was found between pollutant concentration and air velocity at cross-sectional of inlet. The panel is still a simple and useful technology in the home kitchen, if it can solve the convenience of cooking operations.

HIGHLIGHTS

• A series of baffle-type hoods by panels in home kitchen were proposed and their effects are obviously better than traditional one.

• The baffles are controllable and convenience for cooking operation.

• There is a power function relationship between pollutant concentration in kitchen space and air velocity at inlet section.

Keywords:

• Kitchen ventilation
• range hood
• capture efficiency
• contaminant removal efficiency
• computational fluid dynamics (CFD)

Acknowledgment

The idea for this paper came from the research work of the IEA-EBC-Annex 62 Ventilative Cooling and IEA-EBC-Annex 80 Resilient Cooling.

Disclosure statement

The authors declared no potential conflicts of interest with respect to the research, authorship and/or publication of this article.

Additional information

Funding

This study was funded by the National Natural Science Foundation of China (No. 51308206), International Science and Technology Cooperation Program of China (No. 2014DFA72190), Hunan Science and Technology Plan Project (No. 2023SK2014), Natural Science Foundation of Hunan Province of China (No. 2021JJ30269, 2021JJQNJJ0546), Scientific Research Foundation of Hunan Education Department (No. 18B214).