Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improving indoor air quality and thermal comfort in residential kitchens with a new ventilation system
https://orcid.org/0000-0003-3166-1701
https://orcid.org/0000-0003-4431-5867
Abstract Chinese kitchen environment is usually hot and humid in summer and cold in winter, while people spends considerable time there. This investigation firstly assessed the indoor air quality and thermal environment in a kitchen in summer in Changsha, China. Sixteen cooks were asked to prepare the same dishes in the kitchen. The study measured skin temperatures of the cooks and environmental parameters (air temperature, CO, CO2, TVOCs, and PM2.5) and recorded their thermal sensation votes using questionnaires at the same time. The results show that the thermal environment in the kitchen was highly non-uniform and too hot in summer. The air temperature in the kitchen could increase 5.3 °C during cooking. TVOCs and PM2.5 concentrations exceeded the limits by Chinese standards in the kitchen. Thus, this investigation proposed a new ventilation system to improve the indoor environment in Chinese residential kitchens. The new ventilation system had upward air curtains around the gas stove and conditioned air from the cabinet under the stove. A systematic numerical study using the steady state RNG k-ϵ model was performed to optimize the integrated system design for both summer and winter conditions. Experimental measurements were conducted in a kitchen mockup to verify the performance of the new system. The measured capture efficiency of the new system was 96.2%–97.1%, the predicted dissatisfied percentage (PD) distribution around the cook smaller than 20%, and the vertical temperature difference between head and feet −0.9 °C.
Highlights Thermal comfort level and IAQ were poor in Chinese residential kitchen. Proposed of an integrated air curtain and air-conditioning system to improve thermal comfort and IAQ in residential kitchens. Optimization of the new ventilation system by means of CFD simulations. Verification of the computed results with corresponding experimental data.
Improving indoor air quality and thermal comfort in residential kitchens with a new ventilation system
https://orcid.org/0000-0003-3166-1701
https://orcid.org/0000-0003-4431-5867
Abstract Chinese kitchen environment is usually hot and humid in summer and cold in winter, while people spends considerable time there. This investigation firstly assessed the indoor air quality and thermal environment in a kitchen in summer in Changsha, China. Sixteen cooks were asked to prepare the same dishes in the kitchen. The study measured skin temperatures of the cooks and environmental parameters (air temperature, CO, CO2, TVOCs, and PM2.5) and recorded their thermal sensation votes using questionnaires at the same time. The results show that the thermal environment in the kitchen was highly non-uniform and too hot in summer. The air temperature in the kitchen could increase 5.3 °C during cooking. TVOCs and PM2.5 concentrations exceeded the limits by Chinese standards in the kitchen. Thus, this investigation proposed a new ventilation system to improve the indoor environment in Chinese residential kitchens. The new ventilation system had upward air curtains around the gas stove and conditioned air from the cabinet under the stove. A systematic numerical study using the steady state RNG k-ϵ model was performed to optimize the integrated system design for both summer and winter conditions. Experimental measurements were conducted in a kitchen mockup to verify the performance of the new system. The measured capture efficiency of the new system was 96.2%–97.1%, the predicted dissatisfied percentage (PD) distribution around the cook smaller than 20%, and the vertical temperature difference between head and feet −0.9 °C.
Highlights Thermal comfort level and IAQ were poor in Chinese residential kitchen. Proposed of an integrated air curtain and air-conditioning system to improve thermal comfort and IAQ in residential kitchens. Optimization of the new ventilation system by means of CFD simulations. Verification of the computed results with corresponding experimental data.
Improving indoor air quality and thermal comfort in residential kitchens with a new ventilation system
https://orcid.org/0000-0003-3166-1701
https://orcid.org/0000-0003-4431-5867
Abstract Chinese kitchen environment is usually hot and humid in summer and cold in winter, while people spends considerable time there. This investigation firstly assessed the indoor air quality and thermal environment in a kitchen in summer in Changsha, China. Sixteen cooks were asked to prepare the same dishes in the kitchen. The study measured skin temperatures of the cooks and environmental parameters (air temperature, CO, CO2, TVOCs, and PM2.5) and recorded their thermal sensation votes using questionnaires at the same time. The results show that the thermal environment in the kitchen was highly non-uniform and too hot in summer. The air temperature in the kitchen could increase 5.3 °C during cooking. TVOCs and PM2.5 concentrations exceeded the limits by Chinese standards in the kitchen. Thus, this investigation proposed a new ventilation system to improve the indoor environment in Chinese residential kitchens. The new ventilation system had upward air curtains around the gas stove and conditioned air from the cabinet under the stove. A systematic numerical study using the steady state RNG k-ϵ model was performed to optimize the integrated system design for both summer and winter conditions. Experimental measurements were conducted in a kitchen mockup to verify the performance of the new system. The measured capture efficiency of the new system was 96.2%–97.1%, the predicted dissatisfied percentage (PD) distribution around the cook smaller than 20%, and the vertical temperature difference between head and feet −0.9 °C.
Highlights Thermal comfort level and IAQ were poor in Chinese residential kitchen. Proposed of an integrated air curtain and air-conditioning system to improve thermal comfort and IAQ in residential kitchens. Optimization of the new ventilation system by means of CFD simulations. Verification of the computed results with corresponding experimental data.
Improving indoor air quality and thermal comfort in residential kitchens with a new ventilation system
Liu, Sumei (Autor:in) / Cao, Qing (Autor:in) / Zhao, Xingwang (Autor:in) / Lu, Zechao (Autor:in) / Deng, Zhipeng (Autor:in) / Dong, Jiankai (Autor:in) / Lin, Xiaorui (Autor:in) / Qing, Ke (Autor:in) / Zhang, Weizhen (Autor:in) / Chen, Qingyan (Autor:in)
Building and Environment ; 180
26.05.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Thermal comfort and ventilation effectiveness in commercial kitchens
| British Library Online Contents | 1993
Indoor thermal environment and air quality in Chinese‐style residential kitchens
| Wiley | 2020
| Engineering Index Backfile | 1947
The Improvement of Ventilation Behaviours in Kitchens of Residential Buildings
| Online Contents | 2012