The company bears advanced production equipment , strong technical force and the complete examination method , the produced metal surface heat insulation sandwich compound machine and the supplementary equipment have complete function and the outstanding performance , which has reached the international advanced level 公司生产设备先进、技术力量雄厚、检测手段齐全,所生产的金属面隔热夹芯板复合机及配套设备功能齐全、性能优异,已达国际先进水平。
The polystyrene froth board other name forth board , the eps board are by includes the volatile liquid foaming agent to be possible the sending polystyrene , after heats up sends the white which heats up in the mold takes shape enable it in advance to have the tiny structure especially , mainly to use in to construct the wall , the house surface heat preservation , the compound board heat preservation , the cold storage , air conditioning , the vehicles , the ships heat preservation heat insulation , the floor heats , use and so on decoration carving is extremely widespread 聚苯乙烯泡沫版? ?又名泡沫版、 eps板是由含有挥发性液体发泡剂的可发性聚苯乙烯珠粒,经加热预发后在模具中加热成型的白色物体,其有微细闭孔的结构特点,主要用于建筑墙体,屋面保湿,复合板保温,冷库、空调、车辆、船舶的保温隔热,地板采暖,装潢雕刻等用途非常广泛。
The thermal storage and heat transfer of pcm wallboards were studied , the ‘ decrement factor ’ and ‘ time lag , which are used to evaluate the material with constant thermo physical properties , can ’ t be used to evaluate the pcm wallboards , because the melting or freezing of pcm can charge or discharge high latent heat during a narrow temperature range , which causes different temperature distribution in the walls and different surface heat flow into the indoor environment 探讨了墙体相变建筑构件的蓄热、传热特性。与常物性建筑构件对室外温度波动衰减(用衰减系数表示)和延迟(用延迟时间表示)的特性不同,相变建筑构件在较窄的范围内有大量潜热的吸收或释放,从而显著的影响其温度分布和表面向室内的传热速率。
Single - layer model is convenient to apply but the unclear relationship between radiative and aerodynamic temperatures is still a bottleneck in this field . a new method was developed to derive reliable surface heat fluxes from radiative temperature viewed from arbitrary zenith angle . aerodynamic and radiative temperatures are connected through a so - called optimum component fraction ( ocf ) parameter - the fraction of vegetation in the field of view when the two temperatures are equivalent in oblique viewing 该方法利用表面热辐射方向性和显热通量都是源于土壤和植被温度的贡献这一共同点,发现在一定倾斜角度的观测下,视场中植被与土壤的比例可以较好地反映植被和土壤与大气进行湍流热交换的贡献率,所以称该方法为最佳组分面积比法,用最佳组分面积比可以将任意角度下观测到的辐射温度订正为空气动力学温度,经过地面和遥感数据验证表明,用该方法计算的通量精度高于普通的单层模型。
A new method is developed to predict the temperature distribution of cooling - plate with non - uniform heat load on the surfaces , meanwhile , two types of cooling - plate used in the environment control system of airplane are studied experimentally under conditions of different reynolds number of air and surface heat loads 摘要提出了一种新的冷板简化数学模型,把翅片折合成导热系数?各向异性的等效厚度层实芯板,将冷板与空气的对流换热作?等效层的稳态导热问题,计算了表面热源非均匀条件下冷板的温度分布。
Some variables regional distribution over south ningxia is given out in the course of evapotranspiration estimation : the regional distribution of surface characteristic parameters ( normalzed difference vegetation index , surface albedo , surface temperature ) , radiation balance components ( surface absorbed shortwave radiation , surface longwave radiation , atmospheric counter radiation , net radiation ) , surface heat and balance components ( soil heat flux , sensible heat flux , latent heat flux ) 估算区域蒸发(散)量的过程中,得到许多有意义的量:地表特征参数(植被指数ndvi 、地表反射率、地表温度) ;地表辐射平衡各量(地表短波吸收辐射、地表长波辐射、大气逆辐射、地表净辐射) ;地表热量平衡各量(土壤热通量、显热通量、潜热通量) 。
It is showed that the heat transport crossing the equator has the similar magnitude and the same period of one year , compared with that of 10 n in arabian sea . by contrast , the heat transport across 10 n in bay of bengal has a much smaller value with a prominent semiannual period ; there are tight relationship between integrated zonal wind stress in one latitude of the indian ocean north of 7 n and the total heat transport across that latitude , as well as the total net surface heat flux north of that latitude . the maximum correlation coefficient is less than - 0 . 5 结果表明越赤道和越10on阿拉伯海的热输送量大小具有可比性,且有相同的年循环特征,而10on孟加拉湾纬度的经向热输送较小,且具有半年变化周期;俨s以北印度洋任一纬度上的纬向风应力异常与此纬度上的经向热输送异常以及此纬度以北印度洋总的海面净热通量异常有很好的相关关系,相关系数最大可达一0 . 5以上。
In boreal summer , the entrainment dominates the western part of bay of bengal and most part of arabian coast ; net surface heat flux is always a dominant factor controlling the sst variation in bay of bengal throughout a year . difference physical processes control the temperature of the mixed layer in different regions 在夏季,整个阿拉伯沿岸和孟加拉湾西部混合层底的卷夹作用占优势;海面净热通量在孟加拉湾sst的变化中始终是主要的影响因子;对几个典型区域的研究表明,不同的区域的混合层温度有着非常不同的变化机制。
A transfer model is established , which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains . the model has simulated surface heat flux , surface temperature , temperature profiles , height of mixture layer and so on . and the differences between urban area , suburban area and rural area have been compared . this model mainly depends on the parameters below : surface albedo , surface roughness coefficient , moisture available coefficient of soil , thermal capacity and thermal diffusion coefficient of errain , cloudage . the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day . parameters used in this model aim at beijing city , and the time is at the beginning of september . to other cities , or other time , the parameters should be adjusted accordingly . in addition , being adjusted , the model can also be used for other homogeneous and inhomogeneous terrains 模式主要依赖于以下参数和物理量:地面反照率下垫面粗糙度土壤的可含水量下垫面的热容量和热扩散系数云量等参数。结果表明,本模式能合理地模拟不同地表热量平衡地表气温混合层高度湍流交换系数湍流动能位温廓线等,以及它们的日变化。该模式所取参数主要针对北京市,时间为九月初,对于其他城市,参数应作相应的调整。