摘要
We present in this paper the results of experimental and numerical study of the thermal performances of a cook stove prototype intended for the parboiling of paddy rice. Thus, the experimental results show that the optimal mass of husk rice is M = 7.15 kg for a good combustion within the combustion chamber and got a maximum temperature at the level of the burners surface. This temperature is T<sub>cu1</sub>=304.78°C. The circulating air flow rate by forced convection is Q<sub>m</sub> = 0.09112 m<sup>-3</sup>·s<sup>-1</sup>. The vertical side walls temperature is T<sub>ple</sub> = 140.6°C and the water temperature and vapor is about 144.6°C in the stockpot. The gas combustion is composed of carbon dioxide (CO<sub>2</sub>), carbon monoxide (CO), methane (CH<sub>4</sub>) and the ratio of hydrogen to nitrogen (H<sub>2</sub>/N<sub>2</sub>). The results from the numerical modeling indicate T<sub>cu1</sub>=307.8°C, T<sub>ple</sub> = 144.55°C and a Q<sub>m</sub> = 0.09258 m<sup>-3</sup>.s<sup>-1</sup>. The average thermal efficiency of the cookstove is η = 46.6% and the power developed by the cookstove is about ≈6 kW. Despite the heat losses, the cookstove remains interesting for paddy rice parboiling activities.
We present in this paper the results of experimental and numerical study of the thermal performances of a cook stove prototype intended for the parboiling of paddy rice. Thus, the experimental results show that the optimal mass of husk rice is M = 7.15 kg for a good combustion within the combustion chamber and got a maximum temperature at the level of the burners surface. This temperature is T<sub>cu1</sub>=304.78°C. The circulating air flow rate by forced convection is Q<sub>m</sub> = 0.09112 m<sup>-3</sup>·s<sup>-1</sup>. The vertical side walls temperature is T<sub>ple</sub> = 140.6°C and the water temperature and vapor is about 144.6°C in the stockpot. The gas combustion is composed of carbon dioxide (CO<sub>2</sub>), carbon monoxide (CO), methane (CH<sub>4</sub>) and the ratio of hydrogen to nitrogen (H<sub>2</sub>/N<sub>2</sub>). The results from the numerical modeling indicate T<sub>cu1</sub>=307.8°C, T<sub>ple</sub> = 144.55°C and a Q<sub>m</sub> = 0.09258 m<sup>-3</sup>.s<sup>-1</sup>. The average thermal efficiency of the cookstove is η = 46.6% and the power developed by the cookstove is about ≈6 kW. Despite the heat losses, the cookstove remains interesting for paddy rice parboiling activities.
作者
Issaka Ouédraogo
Bouwèreou Bignan-Kagomna
W. D. Arsène Ilboudo
Albert Keré
Issaka Ouédraogo;Bouwèreou Bignan-Kagomna;W. D. Arsène Ilboudo;Albert Keré(Research Institute in Applied Sciences and Technology/National Scientific and Technological Research Center, Ouagadougou, Burkina Faso;Thermal and Renewable Energy Laboratory, Joseph KıZerbo University, Ouagadougou, Burkina Faso;Green Innovation Centers Project, Ouagadougou, Burkina Faso)
