Latent heat energy storage characteristics of building composites of bentonite clay and pumice sand with different organic PCMs     
Yazarlar (4)
Ahmet Sarı
Karadeniz Teknik Üniversitesi, Türkiye
Prof. Dr. Cemil ALKAN Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. Alper BİÇER Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Cahit Bilgin
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı International Journal of Energy Research
Dergi ISSN 0363-907X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 09-2014
Cilt No 38
Sayı 11
Sayfalar 1478 / 1491
DOI Numarası 10.1002/er.3185
Makale Linki http://doi.wiley.com/10.1002/er.3185
Özet
SUMMARY: In the present work, six new kinds of building composite PCMs (BCPCMs), PS/octadecane, BC/octadecane, PS/CA-MA, BC/CA-MA, PS/PEG1000, and BC/PEG1000 composites, were prepared by using vacuum impregnation method. The maximum percent of PCM in the composites was assigned to be 12, 13, 18, 23, 30, and 42wt%, respectively. The form-stable BCPCMs were characterized using SEM, FT-IR, DSC, and TG analysis techniques. The characterization results showed the existence of homogenous dispersion of the PCM into the PBM matrixes. The DSC measurements indicated that the melting temperatures of the form-stable BCPCMs are in the range of 20-33°C while they have latent heats of melting in the range of about 28-55J/g. These results make them promising BCPCMs for low temperature-passive TES applications in buildings. Thermal cycling test indicated that the prepared BCPCMs have good thermal reliability and chemical stability. TG analysis proved that the prepared BCPCMs have good thermal durability. In addition, the thermal conductivity of BCPCMs was enhanced considerably by addition of expanded graphite (EG). The improvement in thermal conductivity of the BCPCMs caused appreciably reduction in their melting times. © 2014 John Wiley & Sons, Ltd.
Anahtar Kelimeler
Bentonite | CA-MA eutectic mixture | Chemical stability | Octadecane | PCM | PEG1000 | Pumice | Thermal durability | Thermal energy storage | Thermal reliability