Dynamics of a type IV conformable pressure vessel for natural gas passenger vehicles
| Autor: | Mei Cai, Thomas A. Yersak, Michael William Rogers, Dailly Anne M, Mahmoud H. Abd Elhamid, Prince Jason |
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| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Petroleum engineering business.industry Mechanical Engineering 02 engineering and technology Compressed natural gas Conformable matrix Aspect ratio (image) Pressure vessel Temperature gradient 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Fuel gas Mechanics of Materials Natural gas Thermal Environmental science General Materials Science business |
| Zdroj: | International Journal of Pressure Vessels and Piping. 175:103923 |
| ISSN: | 0308-0161 |
| DOI: | 10.1016/j.ijpvp.2019.103923 |
| Popis: | In this study we report on the fast fill dynamics of a conformable 3.52 L (water volume) prototype Type IV compressed natural gas (CNG) tank with an aspect ratio of 52; aspect ratio being defined here as the ratio of tank length to tank diameter. Non-conformable CNG tanks with aspect ratios less than 3 typically do not develop significant longitudinal thermal gradients during fast filling because pressure work heated gas is efficiently recirculated with inflows of gas cooled by the Joule-Thomson effect. However, this study found that the poor recirculation of gas within the prototype conformable tank during a 18.2s refill resulted in the development of a 23.9 °C m −1 longitudinal thermal gradient and a 125.6 °C developed gas temperature at the rear of the tank; double what was expected. Data was collected during several refills ranging from 11.3s to 140.6s in length. This study is the first to report on the fast fill dynamics of a conformable Type IV CNG tank and the data presented here informs the engineering and design of conformable gaseous fuel storage systems. |
| Databáze: | OpenAIRE |
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