[[alternative]]Research and Preparation of Solar Absorbing Coatings and Tests for the Effect of Thermal Collection(I)

計畫編號：NSC98-2621-M032-002研究期間：200908~201007研究經費：908,000[[abstract]]雖然以電漿濺鍍製備的多層的陶瓷金屬鍍膜能使太陽輻射有效率的吸收，但技術設備成本較高、製備大面積困難，且使用方式受限。為發展先進太陽能集熱器技術，配合建築及建物的需求，可大面積任意形狀塗佈的太陽能選擇性吸收塗膜為應用上的考量。將無機類吸收劑摻入有機樹酯製備成塗膜，加工容易且硬化的樹酯可提供保護阻隔水氣與氧氣。但目前的無機類吸收劑仍僅達到次微米級，因此吸收的效果仍不夠理想。因此在選擇性吸收塗層的應用上，利用奈米粒子的吸收，結合高分子樹酯的塗佈方式為非常值得的研究題目與發展方向。利用不同種類的奈米金屬與奈米金屬氧化物，其特殊的高吸收率、低放射率，與高熱傳導性質，製備低成本、高效率、耐熱性，適合大面積塗佈的選擇性吸收塗層。第一年的研究目的是藉由無機吸收劑、奈米金屬或奈米金屬氧化物的添加，提升目前的太陽能選擇性吸收塗膜的效果，以及發展新型式的太陽能吸收塗膜。第二年的研究目的是改質高分子樹酯、奈米金屬與奈米金屬氧化物的結構，進一步提升太陽能選擇性吸收塗膜的效果，並進行彩色太陽能選擇性吸收膜技術的開發。本研究結合太陽能集熱器、蒸發器及薄膜蒸餾系統的研究，具關鍵關連性與商業實用性，同時提供新行型式太陽能集熱器設計的基礎及方向。 Although multi-layer cermet coatings can make efficient absorption of solar radiation, the technological equipment cost is higher, large area preparation is difficult, and the operating process is limited. Under the development of advanced solar heat collector technology and cooperating with requirements of construction and buildings, the solar selective absorber of large area and arbitrarily shaped coating is the consideration of applications. Adding inorganic absorbent into an organic resin and then preparing the coated film is easy to process, and the cured resin can offer the protection and resist vapor and oxygen. However, present inorganic absorbent can only reach submicron scale, thus the absorbent effect is not good enough yet. So in the application of the selective absorbent, utilizing the absorbency of nanoparticles combined with coating process of polymer resins is a very worthy research topic and developing direction. Utilize different kinds of metal and metal-oxide nanoparticles presented special high absorptance, low emittance, and high thermal conduction to prepare low cost, high efficiency, heat resistance, and suitable for large area coating solar selective absorber. The research purpose of the first year is increasing the effect of the present solar selective absorber by adding inorganic absorbents, metal nanoparticles, and metal-oxide nanoparticles. The research purpose of the second year is modifying the structures of polymer resins, metal nanoparticles, and metal-oxide nanoparticles in order to further increase the effect of the solar selective absorber and develop the technology of colored solar selective absorber.[[sponsorship]]行政院國家科學委員