Relationship of laser light guided fiber and heat zone by laser irradiation 激光间质热疗法中光纤终端形状对加热区域影响的研究
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Selective heating zone ( 8 , 10 , 12zones ) allow wide variation of profile settings 选择性的加热段( 8 、 10和12温区)为外形设置的变化提供很大空间
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Because of the large stuff of silicon , complex structure of furnace and expensive cost , computer simulation is a best way to optimize design . in order to study the new heat system , we have calculated the heat zone of 200mm solar cell czsi growth 由于拉晶过程中投料量较大，炉体结构复杂、造价昂贵，所以计算机数值模拟对于优化单晶炉设计是一种重要的工具。本论文用有限元方法对改造后单晶炉的适合的热场进行了数值模拟。
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We adopt new production process of cold ends , so our sic heating elements have excellent specific rate of heat zone resistance and cold end resistance , saving energy , long life , avoiding over - temperature of cold ends to damage the furnace body . the commercial name of our sic heating elements is songshan silca heating elements 我们的碳化硅电热元件采用新的冷端部生产工艺，具有优良的热冷端电阻比，节能、寿命长，同时避免了因冷端部温度过高对炉体造成的损害。
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It has issued residential buildings energy design standard for heating zone hot summer and cool winter zone and hot summer and warm winter zone . for heating zone , the method of effective thermal transmittance based steady heat transfer is used for the energy consume calculation , for hot summer and cool winter zone and hot summer and warm winter zone , the method based dynamic heat transfer must be used for the energy consume calculation 对居住建筑，我国已颁布了包括采暖地区、夏热冬冷地区、夏热冬暖地区三个节能设计标准，对北方寒冷地区，用建立在稳态传热基础上的有效传热系数法进行能耗计算；对夏热冬冷地区、夏热冬暖地区，围护结构受室外动态温度和太阳辐射热的综合作用，明确应采用动态方法计算围护结构传热。
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4 heating zones on barrel , all with air - cooling . each zone with multiple rows of copper fins for high cooling efficiency , coupled with oversized cooling fans mounted at the rear of the extruder barrel . large wattage on heaters coupled with the efficient cooling system ensures very fast heating and cooling of each zone 机筒上有4个加热区域，都带有空气冷却装置；每个区域含附带大冷却风扇的多排铜叶片可获得高冷却效果，高功率的加热模块同有效的冷却系统相结合可以确保每个区域的快速加热和冷却。
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