传热系数k 传热系数(heat transfer coefficient)被定义为物体在特定状态和特定条件下,比表面积而言传热速率的量,常用单位是w/m2·K(千克)。它反映了物体表面特性和流体性质之间的相互作用,例如温度、压力、流速、粘度等。©2022 Baidu |由 百度智能云 提供计算服务 | 使用百度前必读 | 文库协议 | 网站地图 | ...
KEYWORDS:Coolingcoils,Heattransfercoefficient,Numericalanalysis 第一章、绪论 第一章绪论 §1-1概述 在空调工程中广泛使用表冷器。表冷器以冷水和冷剂为冷媒,本课题主要以 以冷水为冷媒的表面冷却器为研究对象。表面式冷却器具有结构紧凑、水系统简 单、水系统阻力小等优点,而且在运行过程中水与空气不直接接触,故...
The carbody heat transfer coefficient K value is an important index of the thermal performance of rail vehicles and an important influencing parameter of energy consumption of the air conditioning system of high-speed train. This article mainly studies the carbody heat transfer coefficie...
双击出口边界条件,将回风口的Flow Rate Weighting设置为1.在Wall中双击Wallqian设置壁面边界条件。点击Thermal选项卡,在Thermal Conditions中选择Convection,将Heat Transfer Coefficient设置为0.5,将Free Stream Temperature设置为307k。同样设置其他壁面的边界条件。
A area m^2 Q heat capacity/duty W K overall heat transfer coefficient W/(m^2 C) 表示单位面，温升为一度的时候所能穿的热量 剩下的是对数平均温差 单位是C 摄氏度 A
K[W/(m².k)]是什么单位? 传热系数K W/( m2.K) overall heat transfer coefficient 稳态条件下,围护结构两侧空气温差为1K,1h内通过1m2面积传递的热量
Diffusion CoefficientHigh Temperature TestsMolecular OscillationsThermal ConductivityEnergy TransferHeat MeasurementHeat Transfer CoefficientsVibrational SpectraThe thermal conductivity of 99·99 per cent pure oxygen is measured in the conductivity column instrument in the temperature range of 400 to 1600 K from...
さらに,温度を実際に計算するためには,缶詰食品やレトルト食品のレトルト殺菌中の温度伝導率(a,thermal diffusivity)および総括熱伝達率/熱伝導率(h/K,overall heat transfer coefficient between heating or cooling medium and food surface/thermal conductivity)の値が必要である.hとkのそれぞれの...
Measurement of the Thermal Conductivity and Diffusivity of Molten Lead in the Interval 601–1000KThermal ConductivityHeat Transfer CoefficientThermal DiffusivityRayleigh NumberLaser Flash MethodNo Abstractdoi:10.1007/s10512-013-9753-4Agazhanov, A. S....
awhere h is the convection coefficient, k is the thermal conductivity, and head is radiation heat transfer coefficient and the value should be found from 那里h是对流系数, k是导热性,并且头是辐射传热系数,并且应该发现价值从 [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯...