泡沫铜/石蜡复合相变材料融化过程的换热特性 关键词：泡沫金属；石蜡；自然对流；传热温差 [gap=1271]Key words：metal foam；paraffin waxes；natural convection；heat transfer temperature difference
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...换热温差, [gap=915]ump,underground water temperature,numerical simulation,composite well,heat leak,heat transfer temperature difference, ...
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First of all, in order to make clear the influence of heat transfer temperature difference on the COP of heat pump, the theoretical COP was calculated by thermodynamics method.
首先,为了明确换热温差的降低对热泵性能系数COP的影响,通过用热力学的方法,对理论COP进行了计算。
参考来源 - 采用直接接触式换热器的蒸气压缩式热泵系统的初步研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Heat transfer in narrow channel has lots of advantages such as compact structure, low heat transfer temperature difference and high efficiency and so on.
窄缝通道具有结构紧凑、换热温差低等优点，因此该无源强化传热技术被广泛应用在微电子、低温制冷、化工及其航空航天等领域。
A new method of heat transfer augmentation with foreign gas jet impingement has recorded very high heat flux even in the case of "negative temperature difference".
异种气体射流强化传热的新方法即使在“负温差的情况下也有很高的热流量发生。”
When the outlet coolant temperature or heat-transfer temperature difference is chosen, the acceptable mean residence time can be calculated by the second limiting condition.
在冷却介质出口温度或传热温差选定的情况下，可以由第二个条件计算满足热稳定性的平均停留时间。
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