An experimental investigation on performance evaluation of CO2 hydrate formation for district cooling application

S. Choi, Yong Tae Kang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Based on growing concerns about the global warming, technologies regarding Carbon Capture, Utilization and Storage (CCUS) have been spotlighted. CO2 gas can be captured by CO2 hydrate which has a relatively higher dissociation enthalpy (500 kJ/kg) than that of ice (333 kJ/kg). Because of the higher dissociation enthalpy, the efficiency of heat transportation can be increased when CO2 hydrate is utilized for district cooling application. In this study, formation and dissociation processes in lab-scale CO2 hydrate refrigeration system with tetrahydrofuran(THF) based absorbent were experimented. The effects of the formation temperature and the pressure during formation process on cooling coefficient of performance (COP) and heat transfer rate at each heat exchangers are investigated. From this analysis, the hydrate frost in the heat exchanger was observed, and COP changes were measured according to the change of THF concentration and hydrate production pressure.

Original languageEnglish
Title of host publication12th IIR/IIF International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning, PCM 2018 - Proceedings
PublisherInternational Institute of Refrigeration
Pages222-226
Number of pages5
Volume2018-May
ISBN (Electronic)9782362150258
DOIs
Publication statusPublished - 2018 Jan 1
Event12th IIR/IIF International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning, PCM 2018 - Orford, Canada
Duration: 2018 May 212018 May 23

Other

Other12th IIR/IIF International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning, PCM 2018
CountryCanada
CityOrford
Period18/5/2118/5/23

Keywords

  • Carbon Dioxide
  • CO2 Hydrate
  • COP
  • Heat Transfer Rate
  • Refrigeration

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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  • Cite this

    Choi, S., & Kang, Y. T. (2018). An experimental investigation on performance evaluation of CO2 hydrate formation for district cooling application. In 12th IIR/IIF International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning, PCM 2018 - Proceedings (Vol. 2018-May, pp. 222-226). International Institute of Refrigeration. https://doi.org/10.18462/iir.pcm.2018.0030