Operational planning of an engine generator using a high pressure working fluid composed of CO2 hydrate |
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| Authors: | Shin&rsquo ya Obara,Takanobu Yamada,Kazuhiro Matsumura,Shiro Takahashi,Masahito Kawai,Balaji Rengarajan |
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| Affiliation: | 1. Power Engineering Laboratory, Department of Electrical and Electronic Engineering, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan;2. Thermal Energy Engineering Laboratory, Department of Mechanical Engineering, Kitami Institute of Technology, Japan;3. Department of Research and Development, Hokkaido Industrial Technology Center, 379 Kikyo-cho, Hakodate, Hokkaido 041-0801, Japan;4. Department of Mechanical Engineering, Hakodate National College of Technology, 14-1 Tokura-cho, Hakodate, 042-8501, Japan;5. Centre for Fuel Cell Technology, International Advanced Research Centre for Powder Metallurgy and New Materials, IIT-M Research Park, Phase-1, Second Floor, 6, Kanagam Road, Taramani, Chennai 600 113, India |
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| Abstract: | An actuator system (gas-hydrate engine) using the dissociation and recombined continuous cycle of CO2 gas hydrate was developed. The heat source temperatures required for the operation of the proposed system are in the temperature range of green energy and low-quality exhaust heat. The energy flow of this proposed system was investigated by numerical analysis. From these results, for example, the entrance operating conditions of the recombination equipment are 9 °C and 1.2 MPa, and the exit conditions are 0 °C and 5 MPa. In the case of a heat source temperature of 20 °C of the recombination equipment, a heat source temperature of −5 °C of the dissociation equipment and the passing of a working fluid comprised of 1150 g/s of CO2 and H2O about 5 kW of electric power can be obtained. Moreover, although the recombined speed was remarkably slow compared with dissociation, this study considered the relation of recombined speed between the physical conditions of the working fluid and the volume of the recombination equipment. Based on the results obtained in this study, a prototype will be developed next. |
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| Keywords: | CO2 hydrate Hydrate actuator Hybrid power system Operation planning Working fluid |
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