AN AUTOMATED SYSTEM FOR THE CONTINUOUS GRAVIMETRIC MEASUREMENT OF MOISTURE SORPTION

摘要：

　　An experimental system has been developed for the continuous gravimetric measurement of moisture sorption isotherms.Samples can be subjected to stepwise increase/decrease of relative humidity within the range of 10 and 90%,for any temperature between 10 and 70 °C.Air is circulated through and around the product to enhance the interchange rate at the air-water interface.Different herbs such as leaves (Melissa officinalis L.),flowers (Matricaria chamomilla L.) and roots (Valeriana officinalis L.) were used as test material.The technique was compared to the standard,static gravimetric method and dynamic vapor sorption in terms of accuracy,equilibration time and equilibrium moisture content.

关键词： Moisture sorption climatic test chamber weighing cell equilibrium

作者: D.Argyropoulos J.Müller

作者单位: Universit(a)t Hohenheim,Institute of Agricultural Engineering,Tropics and Subtropics Group Garbenstrasse 9,Stuttgart,70599,Germany

会议类型: 国际会议

会议名称: The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))

会议地点: 厦门

会议语种:英文

页码: 1-5

在线出版日期: 2012-01-11（万方平台首次上网日期，不代表论文的发表时间）