Dissolution Process Observation of Methane Bubbles in the Deep Ocean Simulator Facility
| Autor: | Norio Tenma, Itsuka Yabe, Ike Nagamine, Brandon A. Yoza, Ai Oyama, Stephen M. Masutani, Tatsunori Fukumaki, Tsutomu Uchida |
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| Rok vydání: | 2020 |
| Předmět: |
Control and Optimization
Materials science 010504 meteorology & atmospheric sciences Water flow Countercurrent exchange Bubble Analytical chemistry Energy Engineering and Power Technology Artificial seawater Activation energy 010502 geochemistry & geophysics lcsh:Technology 01 natural sciences Methane salinity chemistry.chemical_compound Electrical and Electronic Engineering temperature dependence Engineering (miscellaneous) Dissolution bubble dissolution 0105 earth and related environmental sciences lcsh:T Renewable Energy Sustainability and the Environment non-hydrate condition chemistry Seawater Energy (miscellaneous) |
| Zdroj: | Energies, Vol 13, Iss 3938, p 3938 (2020) Energies Volume 13 Issue 15 |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en13153938 |
| Popis: | To investigate the temperature dependency of the methane bubble dissolution rate, buoyant single methane bubbles were held stationary in a countercurrent water flow at a pressure of 6.9 MPa and temperatures ranging from 288 K to 303 K. The 1 to 3 mm diameter bubbles were analyzed by observation through the pressure chamber viewport using a bi-telecentric CCD camera. The dissolution rate in artificial seawater was approximately two times smaller than that in pure water. Furthermore, it was observed that the methane bubble dissolution rate increased with temperature, suggesting that bubble dissolution is a thermal activation process (the activation energy is estimated to be 9.0 kJ/mol). The results were different from the expected values calculated using the governing equation for methane dissolution in water. The dissolution modeling of methane bubbles in the mid-to-shallow depth of seawater was revised based on the current results. |
| Databáze: | OpenAIRE |
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