抄録
In this study, we focus on the design of a gas-hydrate clean generation system which uses the dissociation-expansion properties of a CO_2 hydrate. Generation of a gas hydrate occurs when a mixed fluid of a certain gas and water is pressurized to a certain temperature and then cooled. If this gas hydrate is heated, a very high pressure is obtained from the dissociated gas released in the dissociation process. Therefore, by utilizing the difference of temperature between a renewable low-temperature heat source and the outdoor cold temperature in a cold district for the formation-dissociation cycle, the obtained high pressure gas can be applied to an actuator, and a very low environmental impact generation system can be obtained. However, a power generation system applying the dissociating gas from a gas hydrate as a working fluid in an actuator has not yet been studied. To perform the study in this work, first, the modeling of the gas hydrate generator system is prepared, and then, the power quality using this model is analyzed. Usually, demand side such as general housing and factories is composed not only of simple constant impedance loads but also of a variety of loads. Therefore, in this study, different loads on the demand side are used to investigate the differences in output characteristics of the proposed system.
