کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
243784 501936 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on preparation, structure and thermal energy storage property of capric–palmitic acid/attapulgite composite phase change materials
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Study on preparation, structure and thermal energy storage property of capric–palmitic acid/attapulgite composite phase change materials
چکیده انگلیسی

Fatty acid phase change materials (PCMs) have some advantages such as less corrosivity, no separation of subcooling phase and low price. In this paper, capric acid and palmitic acid are composited according to a certain mass ratio to prepare binary fatty acid. Capric–palmitic acid are absorbed into attapulgite by vacuum method to prepare capric–palmitic acid/attapulgite composite PCMs. Analysis methods such as differential scanning analysis (DSC), scanning electron microscope (SEM), Fourier transform infrared (FT-IR) and specific surface analysis (BET method) are used to test the thermal properties, structure and composition of the prepared composite PCM. The results indicate that the pore structure of the caplic–paltimic acid/attapulgite composite PCM is open-ended tubular capillary, which is beneficial to the adsorption. Capric acid and palmitic acid can be absorbed uniformly into attapulgite and the optimum absorption ratio of capric–palmitic binary fatty acid is 35%. There is no chemical reaction between the capric–palmitic acid and attapulgite. The phase change temperature of the capric–palmitic acid/attapulgite composite PCM is 21.71 °C and the latent heat is 48.2 J/g.


► Capric–palmitic acid/attapulgite composite PCMs are prepared by vacuum method.
► The composite PCMs is form-stable.
► There is no chemical reaction between the capric–palmitic acid and attapulgite.
► The phase change temperature and the latent heat of the composite PCM is 21.71 °C and 48.2 J/g, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 88, Issue 9, September 2011, Pages 3125–3132
نویسندگان
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