潜热
- latent heat
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[latent heat] 相变潜热的简称,指单位质量的物质在等温等压情况下,从一个相变化到另一个相吸收或放出的热量。这是物体在固、液、气三相之间以及不同的固相之间相互转变时具有的特点之一。固、液之间的潜热称为熔解热(或凝固热),液、气之间的称为汽化热(或凝结热),而固、气之间的称为升华热(或凝华热)
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离体生物组织相变潜热的DSC测试
Measurement for Latent Heat of Tissues in Vitro with DSC
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开花期至蜡熟期,水稻冠层白天总潜热通量FACE比对照平均低6.7%。
From flowering to maturing stage , the average difference of daytime total canopy latent heat flux between ambient and FACE was about 6.7 % .
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森林蒸散量日变化特点是白天高于夜间,中午最高,夜间潜热通量和显热通量(H)有低估的现象;
Forest evapotranspiration was higher in the daytime than that at night , with the highest value occurring at noon .
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潜热和感热通量能使SST的下降的最大值为3℃。
And latent heat and sensible heat fluxes could make the SST decrease 3 ℃ .
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采用ANSYS参数化设计语言模拟多道烧结的热源移动,用焓处理相变潜热的影响。
The moving laser beam is simulated with the employment of ANSYS parametric design language and latent heat is considered by using enthalpy .
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二相一维Stefan问题对潜热的一致渐近行为
The asymptotic behavior of one-space-variable two-phase Stefan problem to latent heat
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该模型考虑了物料参数随温度的变化以及凝固时的相变潜热,采用了Visualc++语言编写程序模块。
This model takes account of parameter changed as temperature and freezing latent heat generated by phase transition during solidification . The model is programmed with Visual C + + language .
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在参数化过程中,太阳辐射吸收考虑了地形的坡向作用,地表潜热和水汽通量考虑了植被作用,闭合方案采用E-ε能量闭合。
Effects of slope direction and vegetation were taken into consideration for solar radiative absorption and flux of surface latent heat and moisture , respectively , in parameterization .
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潜热通量、显热通量、净辐射、光合有效辐射均与CO2通量呈极显著正相关。
Latent heat flux , sensible heat flux , net radiation flux and photosynthetic active radiation are all significantly positively related with CO2 flux .
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本文在分析Al-Si合金潜热释放特点的基础上,建立了根据Si含量计算Al-Si合金潜热的计算模型。
A latent heat computation model of aluminum silicon alloy has been created based on the silicon content in the alloys .
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经DSC法测定和计算,该贮热材料的熔解热可达252Jg,潜热大,贮热性能稳定。
The fusion heat of the material is 252J / g measured by DSC and the property of heat storage is stable .
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经过计算得出,4小时球磨粉储能约为Cu相变潜热的28.1%,8小时球磨粉储能约为Cu相变潜热的31.4%。
By calculation , the 4-hour milled powder stored 28 . 1 % of phase transformation energy of Cu , and the 8-hour milled powder stored 31.4 % .
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我国全年潜热辐合量零值线大致沿纬度32~34°N,潜热源、汇的分布与我国降水量的分布特征很一致。
The zero line of the whole year latent heat convergence runs roughly along 32 & 34 ° N. The distribution of latent heat sinks and sources coincides well with that of precipitation in China .
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变质良好时,合金的的凝固温度,共晶温度降低,α(Al)相析出潜热减小,共晶Si相结晶潜热增大。
When best modification obtained , the freezing point and eutectic temperature droped down , while the crystal latent heat of α ( Al ) and Si phases decreased and increased respectively .
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从相变温度和相变潜热角度考虑,工业化前景较好的低温PCM均为固-液PCM。
From the phase transition temperature and latent heat point of view , low-temperature solid-liquid PCM have a better prospect for industrialization .
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雨天状况下,各种植被间标量粗糙度的差异减小了。计算的地表温度、感热通量、潜热通量较原BATS的更为合理。
The calculated land surface temperature , sensible heat flux andlatent heat flux is more reasonable than those in unchanged BATS .
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KESSLER方案和MRF方案实验模拟出的平均潜热最小,LIN方案和YSU方案实验潜热最大;
KESSLER-MRF case produces the minimum latent heat flux while LIN-YSU produces the maximum latent flux .
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采用差示扫描量热(DSC)分析技术测定了Al-34%Mg-6%Zn合金作为潜热储蓄材料的热性能。
The thermal properties of Al-34 % Mg-6 % Zn alloy as a latent heat storage material were determined by the differential scanning calorimetry ( DSC ) analysis technique .
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利用ANSYS软件对相变材料的相变过程进行模拟分析,并通过试验验证,ANSYS模拟结果和试验结果基本一致,均表明提高相变材料的热导率和潜热是延长相变材料模块恒温时间的主要途径。
Using ANSYS software to analyze phase change of PCMs , the results show that high latent heat and high heat conductivity is the main way to prolong the material constant temperature time .
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在模型中对铸型传热系统中的对流、辐射、接触边界条件和凝固潜热进行了处理,利用有限元分析软件ANSYS,分析了紫铜冷却壁的温度场的变化。
The change of temperature field of copper staves was analyzed through using ANSYS software on the basis of disposed convection , radiation and contact boundary condition and latent heat of solidification in the model .
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计算结果表明,克服相界面摩擦所需要的能量为1314Jmol,仅占相变潜热的一小部分。
We found that the energy consumed for phase boundary friction is 13.14J / mol , only a small part of the latent heat of its martensitic transformation .
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关于其机制,本文认为主要是海洋对大气强迫的动力响应导致那里的SST变冷,尽管潜热通量的贡献也很显著。
Regarding the mechanism responsible for this , the ocean dynamical response to the atmospheric forcing is suggested to be active , while the contribution of latent heat flux is also significant .
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但8月份的潜热通量大,平均最大约为120W·m-2,当有降水发生时,潜热通量可达570W·m-2,与感热通量相当。
But latent heat flux can be up to 570 W · m - 2 , when precipitation occuring .
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在对结晶潜热处理的过程中,充分考虑了ZA27合金宽结晶温度范围特点,采用热焓法处理。
The heat-enthalpy method was used to deal with the latent heat allowing for the broad crystallization temperature interval of ZA27 alloy .
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利用SiB模式计算了地表辐射。感热、潜热通量,并且预报地表温度。
In the SiB model , we calculated the radiation , sensible heat , latent heat flux and the daily variation of temperature at the surface .
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分析了SST的季节及年际变化特征,第二模态显示的是SST对由风引起的潜热释放的响应特征。
Te seasonal and interannual variability of SST in the coastal China seas can be well portrayed by CORA data . The second mode of EOF reveals the SST response to wind-induced latent heat .
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应用拓扑方法计算烷烃298K温度下的蒸发潜热
A New Method for Calculating the Latent Heat of Evaporation of Alkane at 298K Using Topological Method from Molecular Structure
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采集凝固潜热换热装置特性及热泵性能分析R290与R404A螺纹管内凝结换热及流阻特性的比较研究
Study on the Characteristics of the Freezing Latent Heat Exchanger and the Performance of the Heat Pump
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并利用ANSYS软件建立了横焊模型,该模型考虑了焊接过程中热辐射、热传导、相变潜热以及横焊位置对温度场的影响,应用了单元生死技术模拟焊道填充。
Establish a multiple pass weld heat filed model with the ANSYS software . The model used element life and death technology , considered the heat emission , heat exchange , latent heat of phase change , and the influence of horizontal position .
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中性条件感热交换系数和潜热交换系数(CHn,CEn)对天气变化的反应不够敏感。
And the sensible ( C_ ( Hn )) and latent ( C_ ( En )) heat exchange coefficients were not sensible to the synoptic change .