Results 11 to 20 of about 2,480 (146)
Condensation Characteristics of Superhydrophobic Surface at Different Working Conditions [PDF]
, 2023 Superhydrophobic surfaces can reduce the attachment of droplets, reduce the increase of thermal resistance caused by the existence of droplets, and thereby improve the efficiency of air conditioning, power generation, and seawater desalination systems ...
Gu Guiyu +4 more
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Research on Flexible HVDC Transmission Technology and Strategies for Improving the Operational Stability of IGBT Components [PDF]
, 2023 [Introduction] With the continuous improvement of the strategic position of clean energy, more and more new energy power generation equipment is connected to the power grid, but its power quality is unstable, which has a great impact on the AC ...
Tao WANG +3 more
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Research progress of novel low-carbon technologies in cold storages [PDF]
, 2023 This paper introduces the low-carbon quantitative index and energy consumption evaluation standard of cold storages, then systematically summarizes the novel low-carbon technologies and their application in cold storages from three aspects: refrigeration
HUO Yi-lin +3 more
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, 2014 苹果是我国一种古老的果树,迄今已有2000多年的栽培史,但是人们很少注意在不同的时期,苹果有不同的品种和名称。早期栽培的苹果品种主要是原产我国新疆西部的种类,古人称之为柰和林檎,其中林檎是比较受欢迎的种类。唐以后又增加了楸子、频婆果、海红等种类。频婆果可能是原产新疆的红肉苹果,其名称来源于佛经,它是元代以后人们喜爱的种类,并被简称为"苹果"。19世纪下半叶以来,我国栽培的主要是从西方引进的品种,虽然仍叫苹果,但与历史上的苹果差别很大。与此同时,柰、林檎等名称也逐渐为人们所遗忘。由此案例研究可看出 ...
罗桂环
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, 2017 韦应物创作了许多暮夜题材的诗歌,它们展现着韦应物特定时期的经历和心理状态,拥有着独特的艺术魅力,其中幽独、淡远的暮夜意境还让我们看到韦应物内心遗留的盛唐气象和仕隐情怀。本文以暮夜诗文本的分析和解读为基础,对韦应物暮夜诗的审美意境进行分析 ...
高捷
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Gaoya dianqi, 2019 城市配电系统广泛应用的户外环网柜在湿热的南方地区易产生凝露,因凝露引发的环网柜故障时常发生。文中提出通过加强自然通风散热阻碍凝露形成,首先对现有两种共箱方式的环网柜三维建模,然后利用Ansys CFX软件对不同通风设计的环网柜内部流域进行仿真,考虑百叶窗式通风口的横向位置、纵向间距以及顶部空间高度对内部通风散热效果的影响。最后讨论了在凝露发生后,通过在顶盖下表面涂覆亲水性涂料并设计合适的倾角避免凝露坠落至电气设备,最终得出最优设计。
汪清 +4 more
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The concept of “thing”(事), which was commonly used by literati in the Six Dynasties of ancient China, can be understood by the modern word knowledge(知識).
GUO, Jiao, 郭, 姣
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Gaoya dianqi, 2017 由凝露引起的开关柜事故屡见不鲜,而温度和湿度是引起凝露现象的主要因素。基于能量、动量、质量以及组分守恒定律,构建了高压开关柜电缆室热传导、空气对流以及水蒸气扩散影响下的温湿度场数学模型,并利用有限元软件Comsol进行数值计算分析,研究其温度、湿度分布规律以及凝露与温度、湿度的关系。结果表明:由于自身发热,电缆处的温度最高,同时,电缆室空气温度在热传导、对流换热作用下也逐渐升高;而湿度的分布受水蒸气的扩散和温度的综合影响,呈现先增大后减小的趋势,与温度的分布大致相反;且温度差越大,相对湿度越高 ...
刘云鹏, 郭沁
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