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成果報告書詳細
管理番号20170000000135
タイトル*平成28年度中間年報 未利用熱エネルギーの革新的活用技術研究開発/技術シーズ発掘のための小規模研究開発(蓄熱)/高熱伝導性潜熱蓄熱コンポジットの研究開発
公開日2017/6/2
報告書年度2016 - 2016
委託先名国立大学法人北海道大学大学院工学研究院
プロジェクト番号P15007
部署名省エネルギー部
和文要約
英文要約A purpose of this project is to develop a phase change composite (PCC) with high-thermal conductivity for utilizing unused thermal energy. Three research topics were study, and as results, following achievements were obtained in this year.

Topic 1
Enhancement of thermal conductivity of PCCs by controlling shapes of phase change material (PCM) particles as raw material
The purpose of this topic is to investigate effects of size distributions of PCM particle as a raw material on effective thermal conductivity of PCCs prepared by hot-press method. In this research period, we examined spray cooler of a liquid PCM and ball milling solid PCM for controlling size distribution of PCM particles. As result, we can optimize operating conditions to get different size distribution of the PCM particles.

Topic 2
Enhancement of thermal conductivity of PCCs by using different kinds and structures of carbon materials
The purpose of this topic is to investigate effects of kinds and structures of carbon materials as high-thermal conductivity fillers on effective thermal conductivity of PCCs prepared by hot-press method. In this research period, we researched and selected the promising carbon materials such as carbon fiber with different fiber length, and carbon fabric made of carbon fiber.

Topic 3
Enhancement of thermal conductivity of PCCs by stabilization of filler networks using low-melting point alloy
The purpose of this topic is to investigate effects of stabilization of filler networks using low-melting point alloy on effective thermal conductivity of PCCs prepared by hot-press method. In this research period, we investigated the PCC with metallic powders prepared by a hot-press method to clarify whether a percolated filler-network are formed in the case with using metallic powder which structure is completely different from carbon fiber. Erythritol (melting point: 118 °C, thermal conductivity: 0.73 W m-1 K-1) was used as the PCM, and Aluminum powder (< -45 µm) was used as the high thermal conductivity filler. As results, we observed that the percolating aluminum powder network in the PCC could be easily formed by the hot-press method, presenting a higher thermal conductivity.
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