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毛细管型微通道冷凝器流程布置及管路分布优化
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作者 林伟 马雷 +1 位作者 陈昊宇 王辉 《化工机械》 CAS 2021年第3期336-339,共4页
通过实验方法,研究流程布置和管路分布对毛细管型微通道冷凝器换热量的影响。首先从不同流程、相同总管路的冷凝器中实验分析出最优流程布置,然后在此基础上改变每个流程的管路数量,实验分析出最优管路分布。结果表明:相对合理的流程布... 通过实验方法,研究流程布置和管路分布对毛细管型微通道冷凝器换热量的影响。首先从不同流程、相同总管路的冷凝器中实验分析出最优流程布置,然后在此基础上改变每个流程的管路数量,实验分析出最优管路分布。结果表明:相对合理的流程布置和管路分布可以显著提高毛细管型微通道冷凝器的换热能力,同时提高设备的整体制冷性能。 展开更多
关键词 冷凝器 微通道 流程布置 管路分布 换热能力 制冷性能
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采煤机电机冷却系统配置 被引量:2
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作者 赵伟 刘强 《煤》 2021年第9期97-98,共2页
文章基于矿井实际工况条件进行采煤机冷却系统设计选型,文章依次分析冷却介质、冷却结构和冷却管路设计及电机承载能力等,综合确定采煤机电机冷却系统为轴向水路条件下的机壳冷却方式,该电机冷却系统经济实用,维护方便,满足矿井实际生... 文章基于矿井实际工况条件进行采煤机冷却系统设计选型,文章依次分析冷却介质、冷却结构和冷却管路设计及电机承载能力等,综合确定采煤机电机冷却系统为轴向水路条件下的机壳冷却方式,该电机冷却系统经济实用,维护方便,满足矿井实际生产需要。 展开更多
关键词 冷却介质 冷却结构 冷却管路分布 电机承载能力
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Attack Resistant Trust Management Model Based on Beta Function for Distributed Routing in Internet of Things 被引量:1
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作者 Dong Ping Guan Jianfeng +1 位作者 Xue Xiaoping Wang Hongchao 《China Communications》 SCIE CSCD 2012年第4期89-98,共10页
With the rapid development of Internet of Things (IoT),the issue of trust in distributed routing systems has attracted more research attention.The existing trust management frameworks,however,suffer from some possible... With the rapid development of Internet of Things (IoT),the issue of trust in distributed routing systems has attracted more research attention.The existing trust management frameworks,however,suffer from some possible attacks in hostile environments,such as false accusation,collusion,on-off,and conflicting behavior.Therefore,more comprehensive models should be proposed to predict the trust level of nodes on potential routes more precisely,and to defeat several kinds of possible attacks.This paper makes an attempt to design an attack-resistant trust management model based on beta function for distributed routing strategy in IoT.Our model can evaluate and propagate reputation in distributed routing systems.We first describe possible attacks on existing systems.Our model is then proposed to establish reliable trust relations between self-organized nodes and defeat possible attacks in distributed routing systems.We also propose a theoretical basis and skeleton of our model.Finally,some performance evaluations and security analyses are provided to show the effectiveness and robustness of our model compared with the existing systems. 展开更多
关键词 trust management IOT distributed ROUTING PROBABILITY
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