Study on the energy storage characteristics of CO2 gas-hydrate

Objective of this study is to develop a high pressure gas engine generator using the dissociation and expansion characteristics of gas-hydrate. Gas hydrate has a function of energy storage capabilities by the working fluid. However, study of the quantity of high pressure gas to be stored by the dissociation and expansion characteristics of gas-hydrate is not found until now. Therefore, the energy storage amount was investigated from the quantity to be stored of the high pressure gas by CO₂ hydrate. As a result, when 1 m³ of water was used to generate CO₂ hydrate for 480 minutes, the result was that electric power corresponding to approximately 45% of the daily power consumption (4.5 kWh of generator outputs) of an individual house can be stored.