查询词典 heat transfer

According to the present situations of the two production lines and the temperature needed by the producing technics of the heat-exchanger , using the numerical simulation with the Airpark software to analyze the reason why the cooling system can not meet the technicals requirement; with the heat transfer theory computation based on the heat transfer principle, the technical parameters of the cooling sect refer to the system technic and configuration are obtained. That are made for reasonable organization of the airflow of the cooling system and the new cooling equipment achieving the technical requirement. At the same time, it will ease the thermal pollution of the circumjacent environment and improve IAQ of the workshop

根据某厂两条换热器生产流水线的现状和冷却降温的工艺要求，用Airpark 软件进行数值模拟，分析了冷却系统无法满足工艺要求的原因；运用传热学原理进行了设备与环境的传热理论分析和计算，分析了冷却系统无法满足工艺要求的原因，得出了改造所需要的技术与结构参数，并对冷却系统进行合理布局与气流组织，使新的冷却系统发挥了应有的作用，满足了生产工艺的要求，同时也减轻了生产环境的热污染，提高了环境的空气品质。

The influence of those main design parameterssuch as evaporation saturation temperature t_s、heat dissipated power Q and charge ofworking fluid L on the temperature distribution of evaporation"s bottom and boiling heat transfer inside the evaporation has been calculated and analyzed concretely. The method that uses channels to enhance boiling heat transfer of evaporation"s bottom has also been analyzed and calculated preliminarily.

具体计算和分析了蒸发饱和温度t_s、散热功率Q和充液量L等主要设计参数对蒸发段底面温度分布和蒸发段内部沸腾传热特性的影响，对用槽道强化蒸发段底面沸腾换热也做了初步的数值计算和分析。

In the paper, theoretic transfer heat model of HHCHP is established. After comparing experimental value and estimative value, we deduce that theoretic transfer heat model accords with actual condition, so we can estimate the heat performance of HHCHP by theoretic calculation formula.

同时建立了蜂窝热管平板式太阳能热水器的理论传热模型，通过对实验值和理论值的比较，得出进行简化后的理论模型在一般情况下与实际的情况是符合的，因此可以用理论计算公式对蜂窝热管平板式太阳能热水器的热性能进行估算。

A Lithium-Bromide absorption refrigerating machine is designed using inclined fin tubes as heat transfer elements for absorber and using other corresponding heat transfer enhancement elements for the other heat exchangers. Comparing with the machine of using bare tubes, this unit can save bronze by 19%, steel by 28%, space by 36%. And a lot of operating expenditure can be reduced at the same time.

用斜槽管作为吸收器中的传热管，并在其它传热部件中采用相应的强化传热元件，设计了一台溴化锂吸收式制冷机，与全部采用光管的机组相比，节省了19%的铜材、28%的钢材，整体体积减小了36%，同时还节省了其它费用，显示出较好的经济效益。

For a soil or rock of water - lacked , a heat transfer theoretical model is developed , which is a steady or unsteady , the results show that reservoir temperature , thermal diffusion coefficient , inlet temperature , flow rate of and run time of ground source heat pumps have an effect directly on heat transfer process of dhe . it can deduce that intermit running is favorable for this type of soils and rocks

对于贫含水地下岩土层建立了稳态与非稳态传热的理论模型，分析结果表明，岩土层的热储温度、导温系数、埋地换热器进水温度、流量以及地源热泵系统的运行时间或开停机比，都对埋地换热器的传热过程产生直接影响，可以推断，对于该类型岩土层的地源热泵系统，采用间歇运行将是有利的。

As a new technique in the field of microchannel phase-change heat transfer , micro capillary grooved heat sink can drive fluid flow by capillary force and creat enhanced evaporation heat transfer conditions by promoting the formation of an extended meniscus in the three-phase contact-line region of a microgroove.

作为一种新兴的微通道相变换热技术，毛细微槽群蒸发热沉由于能依靠毛细力驱动液体流动，并易于在微槽内三相接触线区域促进扩展弯月面薄液膜的形成，创造高强度的蒸发换热条件，因而能够被用来实现极高换热系数和热流密度的换热过程。

The dynamics and heat transfer on the spinning line during the air drawing process are discussed in detail, mainly relating the forces acting upon the polymer along the spinning line and the expressions of the air drawing coefficient C〓 and heat transfer coefficient h. By introducing the power-law model as the constitutive equation to describe the theological properties of polymer melt and considering the changing of the density and specific heat capacity of polymer melt at constant pressure with the polymer temperature, the former model of polymer air drawing is improved and a complete polymer air drawing model is established, which is integrated with the model of air jet flow field of dual slot die.

在此基础上，对前人的聚合物拉伸理论模型进行了改进，以幂律模型作为描述聚合物熔体流变行为的本构方程，并考虑了聚合物熔体密度和定压比热随聚合物熔体温度变化而变化这个因素，从而建立了完整的熔喷聚合物拉伸理论模型。

The special material is adopted to enhance the radiation and heat conduction heat transfer, and the cellular strengthener whose surface area is bigger can enhance the convection heat transfer.

其采用高导热非金属材料为主体材质达到增强导热及辐射的目的；通过采用蜂窝体形式达到增大比表面积，从而增强对流换热的目的。

Using the opened thermosiphon of 38x3 as experimental element and water as working fluid,the characteristics of dynamic low load boiling,stable severe boiling heat transfer coefficient and critical heat flux are gotten for the opened thermosiphon at the pressure of 0.02-0.1MPa and 0.1-0.8MPa respectively,which makes up the drawback that the opened thermisiphon has not yet accurate boiling heat transfer relationship formulas.

本文以工程上常用的Φ38×3的开口封底为实验元件，以水为工质，对开启式热管内的动态低负荷沸腾、稳态旺盛沸腾及临界沸腾特性进行系统的可视化实验研究，实验压力为0.02～0.8MPa，实验得出了Φ38×3的开口封底管在工作压力为0.02～0.8MPa和0.1～0.8MPa下的管内沸腾传热系数及临界热负荷计算关联式，弥补了开口封底管——这一新型传热元件尚无准确的沸腾换热关联式的缺陷。

It is found that the overall heat transfer will be increased if there are more heat transfer area in the diagonal region starting from the crosspoint of two streams for crossflow heat exchanger.

在维持总传热面积不变的条件下，于叉流换热器冷热流体相交点区域，及由该点所在对角线从两侧往对角线中心区域增加局部传热面积，可改善温差场的均匀程度，从而提高效能。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。