Design of alkaline electrolyser for integration in diesel engines to reduce pollutants emission

The different methods for the generation of hydrogen are well known, as well as their applications, advantages and complications for their use. Every day it is essential to replace fossil fuels, so it is necessary to improve and take advantage of the different devices that we already have. The alkaline electrolyser is one of the best options, due to the simplicity of its components and its simple assembling; it is a relatively inexpensive device for the production of hydrogen. In this article, three different alkaline electrolyser stacks are presented, ECH-001 model. The difference between them lies in the fact that the configuration of the electrode changes with the number of drill holes. This has the purpose of optimizing the maximum productivity of the oxyhydrogen gas (OH₂G) with respect to input power and the performance with different operation parameters, like the number of serial plates, geometry and the distance between them. The performance curves of parallel and serial arrangements are shown. The performance of a DEK^TM diesel engine (monocylinder of 406 cc) with and without OH₂G was evaluated, with flows of one, two and three sL min^-1. Tests for CO, CO₂, HC and NOx emissions were measured using the exhaust gas analyzer and varying the engine speed. The results show that the electrolyser assembly with four holes electrodes achieved the best performance with an OH₂G productivity of 2 sL min^-1 when using; 7 serial plates at the anode (which is called arrangement 1, 5–10), 3 mm gap and a 5% solution of NaOH. The results also shows a 14% reduction in fuel consumption, 22% reduction in HC, 23% reduction in CO, 7% reduction in CO₂ and 15.5% NOx reduction with 2 sL min^-1 of OH₂G all this for 2500 rpm. The obtained results show a great advantage for the use of dual combustion with the diesel-hydrogen combination.     

提高油浸式配电变压器抗短路能力的研究

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制造企业与制造物流的产业组织存在经济学意义上的对偶关系。这种对偶关系取决于三个基本要素:1以制造产品为对象组织生产的规模经济效果;2以制造技术为对象组织生产的规模经济效果;3以制造物流为企业产品交换纽带的交易成本。当制造技术进步和制造物流组织具有规模经济与网络经济效应时,制造物流才能做到迅捷性、低成本性、准时性和可靠性,支撑我国实施制造强国战略。从制造企业的生产组织分析入手,将制造企业划分为以制造产品为对象和以制造技术为对象的两种理想化生产组织,建立模型分析了它们与制造物流的组织耦合特性。     

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以钣金下料为基础,采用数学模型的方法,详细介绍水轮机蜗壳的展开下料及采用瓦片压制法压制时如何确定压形线,以确保产品质量符合设计要求.     

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高真空多层绝热槽车制造工艺要点分析

从绝热材料的准备、内容器的缠绕、内外容器罐体的套合到夹层抽真空等工艺要点入手,对高真空多层绝热槽车的制造工艺进行了详细叙述。     

进口螺旋国产部件的研制

介绍了进口螺旋的结构特点 ,阐述了对进口螺旋部件进行测绘和计算的方法 ,并对测绘数据的正确性作出了论证 ,最后总结了国产部件的优点     

Pilz安全产品在汽车制造行业的应用

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