Do, Taegu Ko, Young Gun Jung, Youngkyun Choi, Ung Su 2024-01-19T18:04:31Z 2024-01-19T18:04:31Z 2021-09-05 2020-02 1944-8244 https://pubs.kist.re.kr/handle/201004/119016 Robust and thermally conductive phase-change capsules (PCCs) can be effectively used as dispersoids for heat transfer fluids (HTFs) to utilize waste heat. Here, we demonstrate PCCs encapsulated with a cross-linked poly(2-hydroxyethyl methacrylate) shell that showed high durability and low thermal hysteresis for effective heat uptake and release. The circulation system was manufactured by mimicking the 4th Generation District Heating (4GDH) system to confirm the heat delivery efficiencies of PCC-dispersed slurries (PCSs) as the HTFs. The enthalpy change of water after it received heat from the PCS improved by up to 41.1% on increasing the amount of PCCs in the PCS. Furthermore, a high PCC recovery of 92 wt % was achieved after 1500 cycles, which accompanied a phase transition. The PCC developed by us can thus enable effective storage/delivery of waste heat-driven energy for zero-energy buildings and a 4GDH system, as well as thermal management of electronics. English American Chemical Society Highly Durable and Thermally Conductive Shell-Coated Phase Change Capsule as a Thermal Energy Battery Article 10.1021/acsami.9b18627 1 ACS Applied Materials & Interfaces, v.12, no.5, pp.5759 - 5766 ACS Applied Materials & Interfaces 12 5 5759 5766 N scie scopus 000512216900054 2-s2.0-85079076878 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article phase-change material microencapsulation phase-change capsule thermal hysteresis phase-change slurry heat transfer fluid