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Isobaricbubble temperature data at 50 mmHg were collected for the system heptaldehydemethyl undecenoate over the entire composition range by the indirect method with a standard Swietoslawskitype ebulliometer.


It is found that, with time, the temperature distribution in the wake behind a vapor bubble becomes nonmonotonic and the maximum temperature may even exceed the initial bubble temperature.


When in the liquid state the refrigerant is referred to as the saturated bubble temperature.


The effect of thepresence of noncondensables, such as air, on bubble temperature is neglected.


The bubble temperature can be determined by making an energy balance for the bubble.

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 The vaporliquid equilibrium data of five binary and one quaternary systems containing tertbutanol, ethylene glycol monoethyl ether ( EG ), water and ethyl tertbutyl ethyl diether ( DT ) , and one ternary system containing tertbutanol,EG and water were determined by using a modifed equilibrium still with double circulator .The mutual solubility, vaporliquid equilibirium data and azeotropic composition of water and DT were also determined by using liquidliquid equilibrum still and Pratt still. Optimized by... The vaporliquid equilibrium data of five binary and one quaternary systems containing tertbutanol, ethylene glycol monoethyl ether ( EG ), water and ethyl tertbutyl ethyl diether ( DT ) , and one ternary system containing tertbutanol,EG and water were determined by using a modifed equilibrium still with double circulator .The mutual solubility, vaporliquid equilibirium data and azeotropic composition of water and DT were also determined by using liquidliquid equilibrum still and Pratt still. Optimized by the nonlinear leastsquares method, the Wilson and NRTL equations'energy parameters were calculated from the binary experimental data. Predictions of vaporliquid equilibrium were made for the ternary and quaternary systems. Bubble temperatures and vapor compositions predicted were showing a good agreement with the experimental data.  用改进的汽液双循环平衡釜测定了含有叔丁醇、乙二醇独乙醚、水和乙基叔丁基乙二醚溶液的六个二元和一个四元体系及叔丁醇乙二醇独乙醚水三元体系的汽液平衡数据。还用液液平衡釜和Pratt釜测定了水和乙基叔丁基乙二醚体系的互溶度,汽液平衡数据和共沸组成。用非线性最小二乘法关联了Wilson和NRTL方程的能量参数,推算了三元和四元体系的汽液平衡。推算的泡点和汽相组成与实验数据相当吻合。  The data of vapor  liquid equilibrium (VLB) for tetrahydrofurancyclohexanewater ternary system were measured by circulation method at 101.32 kPa . The energy parameters of NRTL equation were fitted from the experimental data of two binary systems optimized by the nonlinearleastsquares method .The bubble temperatures and the vapor compositions predicted showed a good agreement with the experimental data .  用动态法测定了四氢呋喃环己烷系统和四氩呋喃环已烷水系统在101.32 kPa下的汽液平衡数据。用非线性最小二乘法拟合了NRTL方程的二元交互作用能量参数,由此推算的泡点和汽相组成与实验值相符。  VaporLiquid equilibrum at 101. 32kPa pressure were measured by circulation method for tel rahydrofurancyclohexane binary system and tetrahydrofurancyclohexane water ternary system. The consistence of the VLE data in the binary system has been checked by the differential test (area method), and integral test (point method), respectively, it has been found that the data are thermodynamically consistent. By the nonlinear leastsquares method, the binary interaction energy parameters of NRTL equation were fitted... VaporLiquid equilibrum at 101. 32kPa pressure were measured by circulation method for tel rahydrofurancyclohexane binary system and tetrahydrofurancyclohexane water ternary system. The consistence of the VLE data in the binary system has been checked by the differential test (area method), and integral test (point method), respectively, it has been found that the data are thermodynamically consistent. By the nonlinear leastsquares method, the binary interaction energy parameters of NRTL equation were fitted from the experimental data of two binary systems. Bubble temperatures and vapor compositions predicted were shown a good agreement with the experimental data.  本文用循环法测定了四氢呋喃一环己烷二元体系和四氢呋喃一环已烷一水三元体系在101.32kPa压力下的汽液平衡数据。分别用积分法(面积法)和微分法(点检验法)对二元实验数据做热力学一致性检验,均符合热力学一致性。 用非线性最小二乘法拟合了NRTL方程的二元交互作用能量参数,推算的泡点温度和汽相组成与实验值符合很好。   << 更多相关文摘 
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