Investigation of generation characteristics of CO₂ 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.