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Experimental and Numerical Study of Energy Losses in a Barbecue Oven in Burkina Faso

Open Journal of Energy Efficiency 2020年第1期9卷 31-52页

作者： gael lassina sawadogo Laboratoire d’Energies Thermiques Renouvelables(LETRE) Universite Pr Joseph KI-ZERBOOuagadougouBurkina Faso Departement Energie Institut de Recherche en Sciences Appliquees et Technologies(IRSAT)OuagadougouBurkina Faso Laboratoire de Mathematiques et Physique(LAMPS) Universite de Perpignan Via Domitia(France)PerpignanFrance

This work concerns an experimental and numerical study of energy losses in a typical oven usually used in the agro-food craft sector in Burkina Faso. The experimental results were obtained by infrared thermography of the oven and by monitoring the evolution of the wall temperatures using thermocouples connected to a data acquisition system. These results indicate that the energy losses are mainly through the walls of the oven. The numerical study based on the energy balance and corroborated by the experimental study made it possible to quantify these losses of energy which represents almost half of the fuel used. These results will allow us to work on a new, more efficient oven model for the grilling sector in Burkina Faso.

关键词： Grill Oven Optimization Energy Losses Nodal Method

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Experimental Study of a Metallic Pressure Cooker Insulated with Kapok Wool

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Energy and Power Engineering 2020年第2期12卷 73-87页

作者： Drissa Ouedraogo Serge Wendsida Igo Abdoulaye Compaore gael lassina sawadogo Belkacem Zeghmati Xavier Chesneau Laboratoire d’Energies Thermiques Renouvelables(LETRE) Universite Joseph KI-ZERBOOuagadougouBurkina Faso Departement Energie Institut de Recherche en Sciences Appliquées et Technologies(IRSAT/CNRST)OuagadougouBurkina Faso Laboratoire de Mathématiques et Physique(LAMPS) Universite de Perpignan Via DomitiaPerpignanFrance

This work is devoted to an experimental study of metallic pressure cooker insulated with kapok wool, a vegetal biodegradable fiber. Experiments conducted on the cooling of hot water in the equipment revealed very low heat losses and a time constant of 60 hours on average. As a result, the equipment makes it possible to finish cooking meals only thanks to the heat stored at the beginning of cooking and keeps cooked dishes warm for long hours. The thermal phase shift of the pressure cooker is around 7?h. Cooking tests conducted on some local dishes revealed about 70% butane gas savings for cooking cowpea and white rice, 38% for cooking fatty rice, 75% for pasta and couscous, and 30% for cooking potato stew. These results show that this technology can contribute to minimizing?energy consumption in the restaurant sector.

关键词： Pressure Cooker Kapok Wool Time Constant Energy Saving Restaurant Sector

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Modeling and Numerical Simulation of Heat Transfers in a Metallic Pressure Cooker Isolated with Kapok Wool

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Modeling and Numerical Simulation of Material Science 2020年第2期10卷 15-30页

作者： Drissa Ouedraogo Serge Wendsida Igo gael lassina sawadogo Abdoulaye Compaore Belkacem Zeghmati Xavier Chesneau Laboratoire d’Energies Thermiques Renouvelables(LETRE) Universite Joseph KI-ZERBOOuagadougouBurkina Faso Departement Energie Institut de Recherche en Sciences Appliquees et Technologies(IRSAT/CNRST)OuagadougouBurkina Faso Laboratoire de Mathematiques et Physique(LAMPS) Universite de Perpignan Via DomitiaPerpignanFrance

In this work, a numerical study of heat transfers in a metallic pressure cooker isolated with kapok wool was carried out. This equipment works like a thermos, allowing finishing cooking meals only thanks to the heat stored at the beginning of cooking, which generates energy savings. Cooked meals are also kept hot for long hours. In our previous work, we have highlighted the performances of the pressure cooker when making common dishes in Burkina Faso. Also, the parameters (thickness and density) of the insulating matrix allowing having such performances as well as the influence of the climatic conditions on the pressure cooker operation were analyzed in detail in this present work. The numerical methodology is based on the nodal method and the transfer equations obtained by making an energy balance on each node have been discretized using an implicit scheme with finite differences and resolved by the Gauss algorithm. Numerical results validated experimentally show that the thickness of the kapok wool as well as its density play an important role in the pressure cooker operation. In addition, equipment performances are very little influenced by the weather conditions of the city of Ouagadougou (Burkina Faso).

关键词： Pressure Cooker Kapok Wool Heat Transfers Modeling Nodal Method

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State of the HIV, Hepatitis B and C Virus Pandemic from 2003 to 2022 in Burkina Faso: Evolution of Prevalence Trends and Strategic Recommendations to Achieve the WHO’s Goal for Their Eradication by 2030

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Advances in Infectious Diseases 2024年第3期14卷 628-643页

作者： Abdou Azaque Zouré Christelle Nadembega Djénéba Ouermi Abdoul Karim Ouattara lassina Traoré Adama Tiemtoré Olivier sawadogo Théodora M. Zohoncon Florencia W. Djigma Jacques Simpore Cerba-Labiogene Group Centre de Recherche Biomolculaire Pietro Annigoni (CERBA) Ouagadougou Burkina Faso Laboratoire de Biologie Molculaire et de Gntique (LABIOGENE) Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Institute for Research in Health Sciences (IRSS/CNRST) Ouaga Burkina Faso Department of Biomedical Hpital Saint Camille de Ouagadougou (HOSCO) Ouagadougou Burkina Faso Department of Biology Universit Norbert Zongo/Centre Universitaire de Manga Koudougou Burkina Faso Department of Mathematic Universit de Ouahigouya Ouahigouya Burkina Faso Faculty of Medicine University Saint Thomas dAquin (USTA) Ouagadougou Burkina Faso

Background: The World Health Organization (WHO) has set a goal to eradicate or at least significantly reduce the prevalence the human immunodeficiency virus (HIV), hepatitis B Virus (HBV) and Hepatitis C Virus (HCV) by 2030. The main objective was to provide an evolving overview of the prevalence of HIV, HBV and HCV infection between 2003 and 2022 in Burkina Faso. Methods: It was a retrospective cross-sectional study based on data from 2003 to 2022. The data were collected using information available in the databases of the HOSCO and CERBA laboratories and included all individuals who underwent HIV and/or HBV and/or HCV testing. Data analysis was performed using SPSS version 20.0, EpiInfo 7, and R version 4.1.0. Results were considered statistically significant if p Results: The study recorded 7432 samples and the mean age of the subjects was 27.98 ± 8.50 years. During this period, the respective prevalence of HIV, HBV, and HCV were 4.66% (346/7432), 8.77% (582/6636) and 5.54% (322/5816). However, from 2003 to 2022, there was a significant decrease (P y=−1.75x+12.59;y=−0.24x+10.01and y=−0.11x+6.02, with “y” corresponding to prevalence and “x” to the years. Conclusion: Burkina Faso needs to rigorously apply prevention and control strategies recommended by the WHO by 2030.

关键词： HIV Viral Hepatitis B and C WHO’s 2030 Goal Burkina Faso

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