Experimental investigation on thermal energy transportation by CO2 hydrate

Joonho Park, Jungjoon Park, Sung Choi, Yong Tae Kang

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


Optimum conditions for an efficient long-distance thermal energy transportation system using CO2 hydrate slurry are evaluated in a lab-scale environment. The properties of CO2 hydrate grant its purpose as a secondary refrigerant considering the high dissociation enthalpy. High pressure and low temperature conditions are required for stable hydrate formation and therefore, tetrahydrofuran (THF) is selected to ease the formation conditions for pure CO2 hydrate. The experiments are conducted based on various THF concentrations, formation pressure, and temperature conditions. Two heat exchangers are installed for the formation and dissociation of CO2+THF hydrate slurry. Heat transfer rates for both heat exchangers and coefficient of performance are evaluated. Pressure drop is obtained during the transportation process from the formation heat exchanger to the dissociation heat exchanger. Consequently, a hydrate based optimized system is assessed for long-distance heat transportation applications.

Original languageEnglish
Title of host publication14th IIR Gustav-Lorentzen Conference on Natural Fluids, GL 2020 - Proceedings
PublisherInternational Institute of Refrigeration
Number of pages6
ISBN (Electronic)9782362150401
Publication statusPublished - 2020
Event14th IIR Gustav-Lorentzen Conference on Natural Fluids, GL 2020 - Virtual, Kyoto, Japan
Duration: 2020 Dec 72020 Dec 9

Publication series

NameRefrigeration Science and Technology
ISSN (Print)0151-1637


Conference14th IIR Gustav-Lorentzen Conference on Natural Fluids, GL 2020
CityVirtual, Kyoto

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning and the Ministry of Trade, Industry & Energy(MOTIE) of the Republic of Korea (No. 20172010105000).

Publisher Copyright:
© 2020 International Institute of Refrigeration. All rights reserved.


  • CO2 hydrate formation
  • CO2 transportation
  • Cold thermal energy
  • Secondary refrigerant
  • Tetrahydrofuran (THF)

ASJC Scopus subject areas

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


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