کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
673965 1459536 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determining the rheological behavior of octadecane as phase change material: First approach
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Determining the rheological behavior of octadecane as phase change material: First approach
چکیده انگلیسی

Phase change materials (PCM) are capable of storing thermal energy within a small temperature range due to their high latent heat. In simulations of thermal energy storage (TES) systems with PCMs, natural convection is often not considered, possibly resulting in differences between numerical and experimental results. Since natural convection depends on the viscosity of the melting or melted region, it is important to determine this property in PCMs accurately. This paper presents different measurements carried out with octadecane. Both rotational and oscillatory tests have been carried out and the influence of the gap and the heating and cooling rate on the results has been analyzed. A first approach to the measurement methodology for obtaining the viscosity of octadecane during phase transition and melting is proposed, using a plate as geometry and a Peltier plate as temperature controller.


► Need to take into account numerically natural convection in PCMs.
► Natural convection dependent on viscosity of the melted and melting PCM.
► First approach to determine the rheological behavior of octadecane.
► The influence of the gap and of the heating and cooling rate has been analyzed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 548, 20 November 2012, Pages 81–87
نویسندگان
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