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.
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Xunxing et al. (2024) studied this question.
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