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能源连续墙运行期热湿耦合传递数值模拟研究
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作者 黄琳 《制冷与空调(四川)》 2023年第1期26-34,共9页
目前国内外针对能源连续墙的研究主要集中在其热性能和力学行为,然而,埋管换热器置于连续墙内将会对墙体及建筑内部空气带来影响,关于其运行期的热湿耦合传递过程的研究尚缺乏。分析了能源连续墙内部由于埋管换热器传热过程引起的热湿... 目前国内外针对能源连续墙的研究主要集中在其热性能和力学行为,然而,埋管换热器置于连续墙内将会对墙体及建筑内部空气带来影响,关于其运行期的热湿耦合传递过程的研究尚缺乏。分析了能源连续墙内部由于埋管换热器传热过程引起的热湿耦合迁移过程,重点研究室内侧壁面的温湿度变化以及通过壁面的显热,潜热热流密度和湿通量。根据埋管换热器不同运行工况:夏季放热、冬季吸热,对比分析了能源连续墙在不同取/放热强度下温度场和湿度场的变化及差异。研究结果表明:在冬夏两季时,能源连续墙运行造成的壁面显热热流密度达到最大水平。而湿通量分和潜热热流密度的最大通量值则发生在过渡季节。夏季埋管的换热功率增加时,壁面夏季显热热流密度和潜热热流密度均增大了。 展开更多
关键词 能源墙系统 热湿传递 壁面热湿通量
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Study on Network Security Architecture for Power Systems 被引量:2
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作者 Chen Yan Li Zengzhi Liao Zhigang 《Electricity》 2005年第3期47-49,共3页
The wide application of network technology in power systems brings not only convenience and flexibility but also security threats. An architecture of network security for power system was proposed in this study,which ... The wide application of network technology in power systems brings not only convenience and flexibility but also security threats. An architecture of network security for power system was proposed in this study,which protected data and facilities from being attacked by outside users by means of firewall, security monitor and control system. Firewall was basically the first line of defense for the intranet; the security monitoring system was a kind of IDS (Intrusion Detection System), while security control system provided authentication, authorization,data-encrypted transmission and security management. This architecture provides various security services, such as identification, authentication, authorization, data integrity and confidentiality. 展开更多
关键词 network security power system IDS FIREWALL
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