Verification and Estimation of Evaporation Heat of 1,4-dioxane Aqueous Solution at Constant Pressure (101.325 kPa)

スポンサーリンク

概要

• 論文の詳細を見る

• This study determined the evaporation heat of 1,4-dioxane aqueous solution, which is necessary to plan the absorption-type refrigeration cycle using the working medium developed by the authors and to establish a method of estimating it based on the existing forms of both components of 1,4-dioxane aqueous solution. Evaporation heat at constant pressure (101.325 kPa) and molar fraction dependence were measured and calculated during both the evaporation process in which the vapor-liquid composition remained constant and the process in which the composition changed, in consideration of the liquid structure of 1,4-dioxane aqueous solution. The measurements and calculation results were compared with existing evaporation heat data and led to the following results : (1) The mean difference in evaporation heat was 2.07% betweenthe value calculated using calculation software (UNIFAC method) that simulated a certain amount of evaporation in vapor-liquid equilibrium at low pressure and the value determined by experiments. (2) The mean difference in evaporation heat was 3.35% between the value determined from total evaporation using TG-DSC and the value calculated from the approximate expression of the relation between cumulative evaporation heat of partial evaporation heatand cumulative sample evaporation. (3) The mean difference in evaporation heat between the value calculated as molar fraction means of both components of the simple mixture model and (1) or (2) was 2.55% and 3.41%, respectively. In conclusion, the evaporation heat of 1,4-dioxane aqueous solution can be estimated as molar fraction means of both components of the simplemixture model as an ideal mixture of normal liquid.

• 八戸工業大学の論文
• 2004-02-27

著者

• Takahashi Susumu

  八戸工業大学

• Kawabata Keiji

  Mechanical Engineering Systems Graduate School Of Engineering Hachinohe Institute Of Technology

• KOJIMA Koryo

  Department of Mechanical Systems on Information Technology, HACHINOHE INSTITUTE OF TECHNOLOGY

• KUDO Masanari

  八戸工業大学

• KAGA Takuya

  八戸工業大学

• TAKAHASHI Sankichi

  八戸工業大学

• Kaga T

  八戸工業大学

• Kojima Koryo

  Department Of Mechanical Systems On Information Technology Hachinohe Institute Of Technology

• Kudo M

  八戸工業大学

関連論文

• Verification and Estimation of Evaporation Heat of 1,4-dioxane Aqueous Solution at Constant Pressure (101.325 kPa)
• Estimation of Viscosity of 1,4-dioxane Aqueous Solution and Liquid Structure of Water in the Solution
• Estimation of Density of 1,4-dioxane Aqueous Solution and Liquid Structure of Water in Solution
• Influence of Liquid Structure of Water on Dehydration Reaction of LiBr・2H2O In Aqueous LiBr Solution
• Thermodynamics Properties of LiBr-H2O-1,4-dioxane Solution
• A Study of the Liquid Structure of 1,4-dioxane Aqueous Solution Using the Chemical Shift of 17O-NMR

スポンサーリンク