Heat Transfer Analysis of Methane Hydrate Sediment Dissociation in a Closed Reactor by a Thermal Method
Abstract
:1. Introduction
2. Apparatus and Materials
3. Procedure
3.1. Hydrate Formation
Sample | Specification | Supply |
---|---|---|
CH4 | 99.999% | Dalian DATE special gas |
Deionized water | Pure | Laboratory |
Quartz sand | BZ-04, Φ-0.361, ρ-2.18 g/cm3 | AS-ONE corporation (Japan) |
3.2. Hydrate Dissociation
4. Results and Discussion
4.1. Hydrate Formation Characteristics in the 5 L Reactor
4.2. Hydrate Dissociation Process
4.3. Heat Transfer Analysis during Hydrate Dissociation
- = Rayleigh number
- = Characteristic length (in this case, the height of hydrate porous media)
- g = acceleration due to gravity
- = Surface temperature (temperature of the wall of reactor)
- = Quiescent temperature (temperature in the dissociated zone)
- ν = Kinematic viscosity of water
- = Effective thermal diffusivity
- = Thermal expansion coefficient
- = Effective thermal conductivity
- = Thermal conductivity of sand
- = Thermal conductivity of water
- = Porosity of glass beads
- = Density (kg/m³)
- = Specific heat capacity (J/(kg·K))
4.4. Temperature Difference during the Hydrate Dissociation
5. Conclusions
Acknowledgments
References
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Zhao, J.; Cheng, C.; Song, Y.; Liu, W.; Liu, Y.; Xue, K.; Zhu, Z.; Yang, Z.; Wang, D.; Yang, M. Heat Transfer Analysis of Methane Hydrate Sediment Dissociation in a Closed Reactor by a Thermal Method. Energies 2012, 5, 1292-1308. https://doi.org/10.3390/en5051292
Zhao J, Cheng C, Song Y, Liu W, Liu Y, Xue K, Zhu Z, Yang Z, Wang D, Yang M. Heat Transfer Analysis of Methane Hydrate Sediment Dissociation in a Closed Reactor by a Thermal Method. Energies. 2012; 5(5):1292-1308. https://doi.org/10.3390/en5051292
Chicago/Turabian StyleZhao, Jiafei, Chuanxiao Cheng, Yongchen Song, Weiguo Liu, Yu Liu, Kaihua Xue, Zihao Zhu, Zhi Yang, Dayong Wang, and Mingjun Yang. 2012. "Heat Transfer Analysis of Methane Hydrate Sediment Dissociation in a Closed Reactor by a Thermal Method" Energies 5, no. 5: 1292-1308. https://doi.org/10.3390/en5051292