کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7935990 | 1513059 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel MgCl2-KCl/expanded graphite/graphite paper composite phase change blocks with high thermal conductivity and large latent heat
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Novel MgCl2-KCl/expanded graphite/graphite paper composite phase change blocks with high thermal conductivity and large latent heat Novel MgCl2-KCl/expanded graphite/graphite paper composite phase change blocks with high thermal conductivity and large latent heat](/preview/png/7935990.png)
چکیده انگلیسی
Herein a novel composite phase change material (PCM) block consisting of a molten salt, expanded graphite (EG) and graphite paper (GP) has been developed via a mixing-compression-heating process. The effects of the addition amount of GP and the compression degree on the composition and thermal characteristics of the obtained MgCl2-KCl/EG/GP composite blocks have been investigated. An increase in the amount of GP leads to a linear increase in thermal conductivity for the composite blocks, while a decrease in latent heat appears as the GP/EG mass ratio is more than 0.88. As the packing density of EG is increased from 200 to 320â¯kg/m3, the thermal conductivity of the MgCl2-KCl/EG composite blocks increases gradually, while their latent heat increases first and then decreases as the EG packing density is more than 280â¯kg/m3. The MgCl2-KCl/EG/GP composite phase change block prepared at the GP/EG mass ratio of 0.84 and the EG packing density of 280â¯kg/m3 exhibits an enthalpy per unit volume of 205.35â¯MJ/m3, showing a decrease by only 1.27% as compared with that of the MgCl2-KCl/EG one, while its thermal conductivity is as high as 12.76â¯W/mâ¯K, 2.08 times that of the MgCl2-KCl/EG one. 1000 heating-cooling cycles verify that the MgCl2-KCl/EG/GP composite phase change block possesses good thermal reliability. The MgCl2-KCl/EG/GP composite phase change block show great potentials in practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 159, 1 January 2018, Pages 226-233
Journal: Solar Energy - Volume 159, 1 January 2018, Pages 226-233
نویسندگان
Junwan Liu, Min Xie, Ziye Ling, Xiaoming Fang, Zhengguo Zhang,