Investigation of generation characteristics of CO<sub>2</sub> hydrate using the source of cold by the open air of winter

Abstract

This research aims to develop a power generation system that utilizes the dissociation and expansion characteristics of CO2 hydrate. The only energy required for the proposed power generation system is heat and electricity is generated using the pressure difference generated during the production and dissociation of CO2 hydrate. In this paper, in order to improve the dissociation efficiency of CO2 hydrate, dissociation experiment of CO2 hydrate was attempted three times. In the first experiment, CO2 hydrate dissociation experiment was conducted by changing the thermal conductivity of the reaction vessel. As a result, it was confirmed that by increasing the thermal conductivity of the reaction vessel, the dissociation efficiency of CO2 hydrate is improved. In the second experiment, dissociation experiments of CO2 hydrate with different set pressures of the reaction vessel were carried out. As a result, very high dissociation efficiency of CO2 hydrate was obtained under high pressure environment. In the third experiment, CO2 hydrate dissociation experiment using iron oxide catalyst was conducted. As a result, it was confirmed that the dissociation efficiency of the carbon dioxide hydrate was improved by adding the iron oxide catalyst. In the previous experiments, the dissociation efficiency of the highest CO2 hydrate was 42.5%. From the above results, it was found that the dissociation efficiency of CO2 hydrate can be improved by a reaction vessel with high thermal conductivity and added with an iron oxide catalyst in a high pressure environment.