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直线的多种形式
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作者 方虎 《商情(科学教育家)》 2007年第10期160-161,共2页
在中学数学中,确定直线方程是一基本问题。能否找出中学所能解决的数学问题的最大范围集,是本文研究的重点。
关键词 对称 反演 反弹 反射 折射 交垂式 双点N边 点弦
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Temperature and Concentration Fields in a Generator Integrated to Single Stage Heat Transformer Using Water/Carrol Mixture
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作者 E.Gómez-Arias J.Ibarra-Bahena +3 位作者 L.Velazquez-Avelar R.J.Romero A.Rodriguez-Martinez M.Montiel-González 《Journal of Thermal Science》 SCIE EI CAS CSCD 2014年第6期564-571,共8页
The generator is the starter device of single stage heat transformer(SSHT) and its characteristics have main effects on the overall efficiency of this kind of absorption machines.This article reports a study of the ge... The generator is the starter device of single stage heat transformer(SSHT) and its characteristics have main effects on the overall efficiency of this kind of absorption machines.This article reports a study of the generation of steam and changes in the concentration of the working solution(Water/Carrol mixture) into a plate heat exchanger as a function of its horizontal and vertical position by gravity effect.It is considered the analysis of six experimental tests;two were evaluated in a plate heat exchanger in a horizontal position and four in a vertical position(90 degree inclination).The generation of steam and increased concentration of the working solution are more sensitive to the vertical position of exchanger than in horizontal position.The results of numerical-experimental analysis indicates that a heat exchanger in horizontal position,the steam generation and the change in the concentration of the working solution occurring in the middle of the plate(or at greater distance depending to the thermodynamic conditions) and instantly in vertical position(at the input of the plate). 展开更多
关键词 Single stage heat transformer Plate heat exchanger Numerical modeling Temperature and concentration field Water/Carrol mixture
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