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真空玻璃
    Study on the Mechanism of Conductive and Convective Heat Transfer in Vacuum Glass
    真空玻璃传导和对流传热机理研究
    (8) A mathematical model of stress distribution in vacuum glass was established by using crunode method.
    (8) 用结点法建立真空玻璃应力分布数学模型。
    Meanwhile the stress distribution was experimentally verified by electrically testing method. The results showed that the maximum stress in the vacuum glass located in the second brace of four square side,and the maximal stress value by elastomechanical calculation was 11.057MPa,while the measured value by electrically testing method was 11.765MPa,with an error by 6.02%.
    试验结果表明,真空玻璃最大应力发生在四角的第2个支撑处,最大应力弹性力学计算值11.057MPa,电测法的测试值11.765MPa,两者误差为6.02%。
    (1) The heat transfer of vacuum glass based on the theory of thin-air transfer heat in the free-molecule state, the theory of Low-E coating's transfer heat and the theory of coupled radiation and conduction in glass was deeply analyzed. At last the calculation model of heat transfer of vacuum glass with Low-E coating was established.
    (1) 本文对真空玻璃的传热机理进行深入分析,根据自由分子状态的稀薄气体导热理论,Low-E(低发射率)膜发射传热理论和玻璃固体导热与辐射传热偶合理论,建立Low-E膜真空玻璃传热数学模型。
    (2) Using diffuse-non-gray-surface model, the physical process of radiation heat transfer fluxes from vacuum glass with Low-E coating was precisely simulated.
    (2) 用非灰谱带模型确切地模拟Low-E真空玻璃与外界热源在辐射换热中的物理过程。
    The reflectivity and transmissivity of Low-E vacuum glass were fully considered in this model.
    模型充分考虑了Low-E真空玻璃表面反射率以及透射率对辐射传热的影响作用。
    (4) The heat-transfer approach of low-E vacuum glass was analyzed amply in this thesis, meanwhile the heat balance equation was established. By the solution of heat balance equation and the analysis of heat-transfer approach, the calculation method of the heat transmission coefficient was gained. At last the fact that vacuum glass with Low-E outside prior to inside was concluded.
    (4) 对镀膜真空玻璃这一特殊结构的传热途径作了详细分析,并建立了热平衡方程,通过对热平衡方程的求解,得到了传热量和传热系数的计算方法,通过对传热途径和传热量组成因子分析得出真空玻璃将Low-E膜镀在外部比镀在内部优越的结论。
    (10), A precise stress distribution color chart which shows many important characteristic parts was drawn by using ANSYS software to analyze vacuum glass's stress and strain field. Eventually a basically consistent result between the theoretical calculation and the software analysis is obtained.
    (10) 用ANSYS软件分析整块真空玻璃的应力应变场,得出了精确的应力分布彩图,直观地表达了真空玻璃重要特征部位的应力分布,并得出理论计算与软件分析基本一致的结果。
    The direct reaction of Al with I_2 at high temperature in a closed vacuum glass tube resulted in AlI_3 vapor.
    在较高温度条件下,碘与铝在封闭的真空玻璃管中直接反应,产生碘化铝蒸气。
    The mathematical model of brace stress-strain in the vacuum glazing was established based upon the crunode method of elastic mechanics. The brace stress-strain field of the vacuum glass was deduced,and the stress-strain distribution was analyzed.
    用弹性力学的结点法建立真空玻璃支撑应力-应变数学模型,求出真空玻璃的支撑应力-应变场,分析了其应力-应变分布规律,同时用电测方法进行试验验证。
    The mathematics model for heat flowing and transferring in vacuum glass was established by the principle of conductive and convective heat transfer,and the equations,such as vacuum glass conductive heat quantity by free molecule,solid transferring heat through the brace and the margin,exterior convection and heat transfer,were deduced.
    利用传导和对流传热原理,建立了真空玻璃热量的流动和传递数学模型,推导了真空玻璃自由分子状态的导热量、支撑柱及边料的固体导热及真空玻璃的外表对流换热方程。
    The results show that the smaller vacuum space of vacuum glass is favorable for converting from free convection to pure air conduction under low vacuum, which is befit to reduce conductive heat coefficient of vacuum glass.
    研究结果表明,在低真空状态下的真空玻璃夹层厚度越小,越有利于由自由对流向纯气体导热方向发展,越有利于真空玻璃传热系数的降低。
 

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