Solid-Liquid Equilibrium and Heat Capacity Measurements of water+Sodium Bromide and Water+Sodium Carbonate Binary Mixtures

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Title:	Solid-Liquid Equilibrium and Heat Capacity Measurements of water+Sodium Bromide and Water+Sodium Carbonate Binary Mixtures 水-溴化鈉及水-碳酸鈉系統固液相平衡及比熱的量測
Authors:	曾梨子陶惟翰吳錦貞陳延平
Contributors:	化材系
Keywords:	solid-liqid equilibrium DSC eutectic composition heat capacity
Date:	2003-11
Issue Date:	2017-03-17 14:31:57 (UTC+8)
Abstract:	求得這些共菁本研究利用熱分析儀DSC測量二成份系統水─溴化鈉和水─碳酸鈉之液化溫度以及共晶溫度。液化溫度隨組成之變化與有限的文獻數據吻合。本研究測得水(1)+溴化鈉(2)之共晶溫度及共晶組成為244.8K，w2=39.7wt%；水(1)+碳酸鈉(3)的共晶條件則為270.6K，w3=5.7wt%，共晶組成也由共晶分率計算方法獲得確認。本研究亦利用熱分析儀，混合物的固態比熱值。 The eutectic and liquidus temperatures for water + sodium bromide and water + sodium carbonate binary systems were measured in this study using differential scanning calorimeter (DSC).The liquidus temperatures as functions of component composition are found to be in good agreement with some available literature data. Eutectic temperatures for water + sodium bromide and water +sodium carbonate binary mixtures are determined in this study as 244.8 and 270.6K, respectively. The method of fractional transformation curve was applied to confirm the eutectic compositions. The eutectic compositions for water + sodium bromide and water + sodium carbonate binary systems are 39.7 wt% NaBr and 5.7wt% Na2CO3, respectively. The heat capacity data for eutectic binary mixtures in their solid states were also measured using DSC.
Relation:	Journal of the Chinese Institute of Chemical Engineers ； 34卷6期 (2003 / 11 / 01) ， P599 - 603
Appears in Collections:	[Department of Chemical & Materials Engineering] journal articles

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