Browsing by Author "Thadsanee Thongkanluang"

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    Performance of near-infrared reflective tile roofs
    (2013) Thadsanee Thongkanluang; Jantharat Wutisatwongkul; Neramitr Chirakanphaisarn; Artorn Pokaipisit
    A green pigments based on a Cr2O3-Al2O3-V2O5-TiO2 composition have been synthesized and the ability of these pigments used with ceramic glazes to confer high solar reflectance has also been studied. Cr2O3 is the host component and the adding mixtures of Al2O3, V2O5 and TiO2 as the guest components. The composition denoted by T1 composes of Cr2O3, TiO2, Al2O3 and V2O5 are 80, 4, 14 and 2 wt%, respectively, gives near infrared solar reflectance of 82.8%. T1 green pigments were prepared for ceramic cool tile roofs (denoted by T1 cool roof). The comparison study on the effectiveness of T1 ceramic cool roofs and a commercial ceramic cool tile roofs (denoted by C cool roof) show that the T1 cool roof has given a better result by keeping the tested room about 4 ¡C cooler. © (2013) Trans Tech Publications, Switzerland.
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    Yellowish-brown pigment with high near infrared reflective
    (Trans Tech Publications Ltd, 2014) Thadsanee Thongkanluang; Jantharat Wutisatwongkul; Prayoon Surin
    Yellowish-brown inorganic pigments having a high near infrared solar reflectance have been synthesized. In this research, Fe2O3 was used as the host component, whereas, the mixtures of Sb2O3, SiO2, Al2O3, and TiO2 were used as the guest components. The guest components were investigated over a range of 36 different compositions. The results showed that the pigment, denoted by YB32, with a composition of Fe2O3, Sb2O3, SiO2, Al2O3, and TiO2 of 65, 15, 10, 2 and 8 wt. % respectively, generated a maximum near infrared solar reflectance of 40. 8% while the YB3 pigment was found to have a minimum reflectance of 29. 3%. The CIE L*a*b* colour index was used to measure the yellowish-brown pigment colours. The YB32 and YB3 pigment powders were also characterized by powder X-ray diffraction technique. It was found that the YB3 powder developed a new phase, FeSb2O3, which is mainly responsible for the decrease in the near infrared solar reflectance. © (2014) Trans Tech Publications, Switzerland.