کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6716831 | 1428745 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study of carbon fiber reinforced alkali-activated slag composites with micro-encapsulated PCM for energy storage
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کلمات کلیدی
Mechanical properties - خواص مکانیکیThermal energy storage - ذخیره سازی انرژی حرارتیMicrostructure - ساختار(بافت) ذره ای و کوچکAlkali-activated slag - سرباره فعال شده با قلیائیتThermal performance - عملکرد حرارتیCarbon fiber - فیبر کربنEnvironment friendly - محیط دوستانهMicroencapsulated phase change materials - مواد تغلیظ شده فازی میکرو کپسول شده
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Experimental study of carbon fiber reinforced alkali-activated slag composites with micro-encapsulated PCM for energy storage Experimental study of carbon fiber reinforced alkali-activated slag composites with micro-encapsulated PCM for energy storage](/preview/png/6716831.png)
چکیده انگلیسی
The use of cement composite with phase change materials (PCM) for thermal energy storage in building is one of the effective means because PCM can be integrated into building envelopes to reduce thermal stress and improve thermal comfort. However, the manufacturing of cement requires much energy and the process involves the emission of carbon dioxide and other undesirable gases to the environment. In this study, an alkali-activated slag (AAS) was used as an alternative to ordinary Portland cement (OPC) and incorporated with various proportions of graphite-modified microencapsulated PCM (MPCM) and carbon fibers (CF) for improving functional and mechanical properties. Tests on the mechanical properties, microstructure, thermal conductivity and thermal storage capacity of the AAS-MPCM composites were carried and compared with those properties the OPC-MPCM composites. Test results show that compressive strength of the AAS-MPCM composites were higher about 30% than the OPC-MPCM composite, but all the compressive strengths generally decreased with increasing MPCM content. CF can increase mechanical properties of both OPC-MPCM and AAS-MPCM dramatically. Compared with OPC-PCM, AAS-PCM has presented well thermal storage capacity. AAS with 20â¯wt% MPCM and 1â¯wt% CF obtained maximum different temperature value with 6.8â¯Â°C and it delay 2â¯min compared with the control samples. Based on the results, AAS-MPCM composites can be used as a promising alternative to cement-based MPCM composites in building components to effectively increase the thermal energy storage performance of building and reduce the energy consumption for cooling and heating.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 161, 10 February 2018, Pages 442-451
Journal: Construction and Building Materials - Volume 161, 10 February 2018, Pages 442-451
نویسندگان
Hongzhi Cui, Tangjie Feng, Haibin Yang, Xiaohua Bao, Waiching Tang, Jiyang Fu,