Effects of Super Absorbent Polymer Addition on the Supercooling and Thermal Properties of Distilled Water

고 흡수성 수지 첨가가 증류수의 과냉각 및 열적 특성에 미치는 영향

  • Lee, Seok-Joon (Department of Mechanical System & Automotive Engineering, Graduate of Chosun University) ;
  • Jang, Jeong-Ik (Department of Mechanical System & Automotive Engineering, Graduate of Chosun University) ;
  • Kim, Jin-Hyuk (Department of Mechanical System & Automotive Engineering, Graduate of Chosun University) ;
  • Lee, Myung-Kyu (Department of Mechanical System Engineering, Chosun University) ;
  • Park, Seul-Hyun (School of Mechanical System & Automotive Engineering, Chosun University)
  • 이석준 (조선대학교 대학원, 기계시스템미래자동차공학과) ;
  • 장정익 (조선대학교 대학원, 기계시스템미래자동차공학과) ;
  • 김진혁 (조선대학교 대학원, 기계시스템미래자동차공학과) ;
  • 이명규 (조선대학교, 기계시스템공학과) ;
  • 박설현 (조선대학교, 기계시스템미래자동차공학부)
  • Received : 2018.06.21
  • Accepted : 2018.09.20
  • Published : 2018.09.30

Abstract

This paper investigated the thermal properties of phase change materials (PCMs) prepared by adding a super absorbent polymer (SAP) to distilled water. The thermal properties of PCMs were investigated using differential scanning calorimeter (DSC) and T-history methods. It was found that 0.1 g SAP addition to distilled water resulted in the best PCM in terms of its thermal properties. The experimental results obtained from the DSC analysis showed that the addition of SAP to distilled water lowered the latent heat from 11.2 J/g to 17.2 J/g. However, the phase separation characteristics which are typically observed for water-based PCMs were found to be improved by adding the SAP. Similar behaviors were observed in results determined from the T-history method. Additionally, the T-history method clearly demonstrated that adding the SAP to distilled water improved the supercooling temperature, shortening the liquid retention time. Despite reductions in the latent heat of PCM with the SAP addition, it is expected that the operating cost of the cooling system can be further reduced due to its improved phase change characteristics such as phase separation and supercooling temperature when the PCM with the 0.1 g SAP added is applied.

Acknowledgement

Supported by : 조선대학교

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