Development of deformability capsule slurry for obtaining thermal energy transport system simulating blood flow

2020 Fiscal Year Final Research Report

• Project/Area Number: 18K03989
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 19020:Thermal engineering-related
• Research Institution: Okayama Prefectural University
• Principal Investigator: Haruki Naoto 岡山県立大学, 情報工学部, 教授 (10311797)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: 潜熱蓄熱材 / カプセルスラリー / ゼラチンカプセル / 相変化 / 変形能 / 熱エネルギー輸送

Outline of Final Research Achievements

This research deals with the flow drag and heat transfer characteristics to reduce transportation energy in the district heating and cooling system. In order to increase in the heat transport capacity per unit volume, the heptadecane gelatin capsule slurry was used as the heat transport medium. Heptadecan is a paraffin-based latent heat storage material, was used as the heat storage material. Gelatin material was used as the capsule material instead of the conventional materials.
In the experiment, the flow and heat transfer characteristics of heptadecare gelatin capsule slurry were measured under the various experimental conditions (= capsule concentration, slurry temperature of capsule slurry). As a result, the heat transfer characteristics of this slurry in the liquid heptadecane state was increased from that in the solid heptadecane state.

Free Research Field

伝熱工学

Academic Significance and Societal Importance of the Research Achievements

本研究で製作されたゼラチンをカプセル材料としたカプセルは，内包する潜熱蓄熱材が液相状態の場合に従来のカプセルにはない柔らかさが付与され，変形が可能である特性を持たせたことが，本研究の学術的意義の一つである．
さらに，本研究により確認されたスラリー流動時の熱伝達特性が増加する傾向は，このゼラチンカプセルスラリーを熱輸送媒体として使用できる可能性が確認されたことになり，大きな社会的意義であると考えられる．