Recently, Shunde Electric Pressure Cooker Alliance （short for EPCA） successfully made four proposals on revision of the IEC international standard for electric pressure cooker with independent intellectual property ...Recently, Shunde Electric Pressure Cooker Alliance （short for EPCA） successfully made four proposals on revision of the IEC international standard for electric pressure cooker with independent intellectual property rights, namely Elastic Structure Design, Anti-blocking Safety, Pressure Relief Safety and Lid Closing Safety. In the mean time, when participating in the activities related with revision proposals on IEC standard Electric Pressure Cooker, EPCA makes full use of the information and experience gained in these activities, improves and put forward the new-edition Electric Pressure Cooker Alliance Standard （hereafter referred to as Alliance Standard）. This article is an interpretation with this Alliance Standard aiming at bettering the pressure cooker enterprises＇ understanding with this standard, so as to guide the alliance enterprises to highlight the differentiated characteristics and product features in the links like products design, procurement of raw and auxiliary materials, manufacturing and sales, etc., as well as to let industrial peers learn about the characteristics of this standard and the products.展开更多
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 s...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).展开更多
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 ...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.展开更多
Many children in China have been robbed of childhood joys and developed emotional problems Cen Cheng, a primary school student in Beijing, is only seven years old, but, at his parents' direction, he is already mak...Many children in China have been robbed of childhood joys and developed emotional problems Cen Cheng, a primary school student in Beijing, is only seven years old, but, at his parents' direction, he is already making preparations for entering university 10 years from now. Things are not going smoothly. Recently, his attention has begun to wander. He often feels uncomfortable. Sometimes he loses his appetite and sometimes he is gluttonous. A medical checkup indicates he has no physical disease, and his pe...展开更多
文摘Recently, Shunde Electric Pressure Cooker Alliance （short for EPCA） successfully made four proposals on revision of the IEC international standard for electric pressure cooker with independent intellectual property rights, namely Elastic Structure Design, Anti-blocking Safety, Pressure Relief Safety and Lid Closing Safety. In the mean time, when participating in the activities related with revision proposals on IEC standard Electric Pressure Cooker, EPCA makes full use of the information and experience gained in these activities, improves and put forward the new-edition Electric Pressure Cooker Alliance Standard （hereafter referred to as Alliance Standard）. This article is an interpretation with this Alliance Standard aiming at bettering the pressure cooker enterprises＇ understanding with this standard, so as to guide the alliance enterprises to highlight the differentiated characteristics and product features in the links like products design, procurement of raw and auxiliary materials, manufacturing and sales, etc., as well as to let industrial peers learn about the characteristics of this standard and the products.
基金the Embassy of France in Burkina Faso,the National Research Fund for Innovation and Development(FONRID)and the International Science Program(ISP)of UPPSALA University for their financial support which allowed the realization of this work.
文摘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).
基金the National Research Fund for Innovation and Development(FONRID)the International Science Program(ISP)for their financial support.
文摘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.
文摘Many children in China have been robbed of childhood joys and developed emotional problems Cen Cheng, a primary school student in Beijing, is only seven years old, but, at his parents' direction, he is already making preparations for entering university 10 years from now. Things are not going smoothly. Recently, his attention has begun to wander. He often feels uncomfortable. Sometimes he loses his appetite and sometimes he is gluttonous. A medical checkup indicates he has no physical disease, and his pe...
