Heat Transfer Enhancement by Fluidized Solid Particles in Gas Carrying Evaporation

来源 :Chinese Journal of Chemical Engineering | 被引量 : 0次 | 上传用户:cryloves
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Heat transfer characteristics are studied for gas carrying evaporation with fluidized solid particles in a vertical rectangular conduit. Experimental results show that heat transfer of gas carrying evaporation is enhanced and the superheat of liquid in contact with heating surface lowers remarkably by introducing solid particles. Nucleate boiling on the heating surface is suppressed to a considerable degree. The mechanism of heat transfer enhancement by fluidized solid particles is analyzed with the consideration of collisions of solid particles with the boiling vapor bubbles. Heat transfer characteristics are studied for gas carrying evaporation with fluidized solid particles in a vertical rectangular conduit. Experimental results show that heat transfer of gas carrying evaporation is enhanced and the superheat of liquid in contact with heating surface lowers remarkably by introducing solid particles. on the heating surface is suppressed to a considerable degree. The mechanism of heat transfer enhancement by fluidized solid particles is analyzed with the consideration of collisions of solid particles with the boiling vapor bubbles.
其他文献
新课标课程改革对初中物理教学做出了更高层次的要求,即全面提升学生们的创新能力、探究能力以及综合运用能力。显然,传统的物理课堂教学模式已远远不能达到新的教学目标。此
EffectofShenmaiInjection(参麦注射液)onlmmunologicFunctioninStomachCancerPatientsafterChemotherapyEffectofShenmaiInjection(参麦注射液)on... EffectofShenmaiInjection(Shenmai Injection) onlmmunologicFunctioninStomachCancerPatientsafterChemotherapyEffectofShenmaiInjec
NK细胞一直是个功能的概念。二十多年前美国国立肿瘤研究所(NCI)的几位免疫学家在研究T细胞对靶细胞的特异杀伤时,发现对照组小鼠脾细胞可以象肿瘤免疫小鼠的脾细胞一样杀伤某些肿瘤细
七种天然植物提取混合液的毒性与致突变性常平罗玉姝郭卫红李桂兰尹松年(中国预防医学科学院劳动卫生与职业病研究所,北京,100050)七种天然植物提取混合液(NPE)是中国科学院植物研究所从栽培
1891年,Chiari首次描述ChiariⅠ畸形,其病理改变包括小脑扁桃体疝入枕大孔水平以下、脑干弯曲下移等。近年来随着影像学的不断进展,发现50%~70%的ChiariⅠ畸形病人合并脊髓空洞〔1〕。目前对本病的治疗无统一意
素质教育背景下,在初中社会课中引入时事热点,对比分析历史和现实,让初中生关注社会,了解时事,深化学生历史使命感和社会责任感。本文通过对初中社会课中引入时事教学策略进
为了研究中药坚骨液对大鼠实验性骨质疏松的治疗作用,应用切除卵巢造成的大鼠骨质疏松模型,以雌二醇和自来水为对照,观察了坚骨液对造模动物骨代谢的影响。结果显示,坚骨液和雌二
有人说:“教师的上课,是一滴水与一桶水的关系。”虽然课堂上倒出来的只有一滴水,但是教师肚子里却需要一桶水。也就是说,只有具备了渊博的知识,只有钻研得深透、真正理解了
1976年唐山大地震造成数千人截瘫,20多年来,他们除承受着躯体残疾的心理压力之外,还存在着对大地震这一剧烈创伤事件导致的长期心理应激反应。本文对唐山市一所截瘫疗养院住
从国内引起食物中毒的100多株蜡样芽胞杆菌中,选出试验用菌株。从培养后的上清液中,经过盐析、离子交换柱层析,制备性凝胶电泳提取蜡样芽胞杆菌溶血素。溶血素由B、L1和L23种成