کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9685011 | 1456220 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bulk and measured temperatures in direct contact membrane distillation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The aim of this work is the development of a transport model for a direct contact membrane distillation process in laminar flow that allows knowing the velocity and temperature profiles within the flow channels as a function of externally measured temperatures just at the entrances and exits of the flow channels in the membrane module. The second aim is to apply this model to a conventional membrane module, and so calculate the difference between the bulk temperatures and the externally measured ones. For the system studied here, moderately important differences between both temperatures have been obtained when working at low flow rates and high temperatures. It can be concluded from the trends observed in this study that an estimation of this temperature difference has to be made before considering the bulk temperature as equal to the externally measured temperature, above all, in those systems where the thermal boundary layers represent an important portion of the flow channels height, and important temperature drops exist through them.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 250, Issues 1â2, 15 March 2005, Pages 141-149
Journal: Journal of Membrane Science - Volume 250, Issues 1â2, 15 March 2005, Pages 141-149
نویسندگان
J.M. RodrÃguez-Maroto, L. MartÃnez,