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Effective thermal conductivity for melting in PCM encapsulated in a sphere

Amin, N.A.M.; Bruno, F.; Belusko, M. - In: Applied Energy 122 (2014) C, pp. 280-287

Heat transfer in phase change materials (PCMs) contained in spherical encapsulations can be modelled more simply if an effective thermal conductivity can be determined to represent the natural convection occurring within the PCMs. Previous research has shown that natural convection in PCM can be...

Persistent link: https://www.econbiz.de/10010789900

Review of convection heat transfer and fluid flow in porous media with nanofluid

Mahdi, Raed Abed; Mohammed, H.A.; Munisamy, K.M.; … - In: Renewable and Sustainable Energy Reviews 41 (2015) C, pp. 715-734

There are two advantages of using porous media. First, its dissipation area is greater than the conventional fins that enhances the heat convection. Second is the irregular motion of the fluid flow around the individual beads which mixes the fluid more effectively. Nanofluids result from the...

Persistent link: https://www.econbiz.de/10011077273

Methane Flux and Authigenic Carbonate in Shallow Sediments Overlying Methane Hydrate Bearing Strata in Alaminos Canyon, Gulf of Mexico

Smith, Joseph P.; Coffin, Richard B. - In: Energies 7 (2014) 9, pp. 6118-6141

-derived carbon in shallow sediments overlying the hydrate bearing strata. When integrated with stable carbon isotope ratios of DIC … overlying hydrate bearing strata like those in Alaminos Canyon is critical to quantifying methane flux and estimating methane … hydrate distributions in gas hydrate bearing marine sediments. …

Persistent link: https://www.econbiz.de/10010945710

Recovery of methane from hydrate reservoir with gaseous carbon dioxide using a three-dimensional middle-size reactor

Yuan, Qing; Sun, Chang-Yu; Yang, Xin; Ma, Ping-Chuan; … - In: Energy 40 (2012) 1, pp. 47-58

Three groups of hydrate-bearing sediment samples with/without underlying gas were prepared using a three …-dimensional middle-size reactor to investigate the favorable conditions for methane recovery from hydrate reservoir with gaseous CO2. The … experimental results indicated that hydrate reservoir with underlying free gas, high saturation of free gas and low saturation of …

Persistent link: https://www.econbiz.de/10010809300

Hydrate-based pre-combustion carbon dioxide capture process in the system with tetra-n-butyl ammonium bromide solution in the presence of cyclopentane

Li, Xiao-Sen; Xu, Chun-Gang; Chen, Zhao-Yang; Wu, Hui-Jie - In: Energy 36 (2011) 3, pp. 1394-1403

Effects of 0.29mol% tetra-n-butyl ammonium bromide (TBAB) solution in conjunction with cyclopentane (CP) on the hydrate … induction time of the hydrate formation at the different temperature–pressure conditions. The results show that the volume of …–pressure condition. In addition, the CO2 concentration in the decomposed gas from the hydrate slurry phase reaches approximately 93mol …

Persistent link: https://www.econbiz.de/10010810726

Molecular Dynamics Simulations of Clathrate Hydrates on Specialised Hardware Platforms

Varini, Nicola; English, Niall J.; Trott, Christian R. - In: Energies 5 (2012) 9, pp. 3526-3533

Classical equilibrium molecular dynamics (MD) simulations have been performed to investigate the computational performance of the Simple Point Charge (SPC) and TIP4P water models applied to simulation of methane hydrates, and also of liquid water, on a variety of specialised hardware platforms,...

Persistent link: https://www.econbiz.de/10010675990

Hydrate Formation/Dissociation in (Natural Gas + Water + Diesel Oil) Emulsion Systems

Xiang, Chang-Sheng; Peng, Bao-Zi; Liu, Huang; Sun, Chang-Yu - In: Energies 6 (2013) 2, pp. 1009-1022

Hydrate formation/dissociation of natural gas in (diesel oil + water) emulsion systems containing 3 wt% anti … linearly with the increase of pressure, and decreases with the increase of water cut. There exists an initial slow hydrate … formation stage for systems with lower water cut, while rapid hydrate formation takes place and the process of the gas …

Persistent link: https://www.econbiz.de/10010676056

Perspectives on Hydrate Thermal Conductivity

English, Niall J.; Tse, John S. - In: Energies 3 (2010) 12, pp. 1934-1942

In this review, the intriguing, anomalous behaviour of hydrate thermal conductivity will be described, and progress in …

Persistent link: https://www.econbiz.de/10010676071

CO2 (carbon dioxide) separation from CO2–H2 (hydrogen) gas mixtures by gas hydrates in TBAB (tetra-n-butyl ammonium bromide) solution and Raman spectroscopic analysis

Xu, Chun-Gang; Zhang, Shao-Hong; Cai, Jing; Chen, Zhao-Yang - In: Energy 59 (2013) C, pp. 719-725

The hydrate-based CO2 (carbon dioxide) separation and capture from CO2/H2 (hydrogen) gas mixtures with the different CO … of 274.15 K and under driving force of 3.0 MPa, the hydrate formation induction time increases while the CO2 recovery (or …

Persistent link: https://www.econbiz.de/10011055299

Hydrate-based CO2 (carbon dioxide) capture from IGCC (integrated gasification combined cycle) synthesis gas using bubble method with a set of visual equipment

Xu, Chun-Gang; Li, Xiao-Sen; Lv, Qiu-Nan; Chen, Zhao-Yang; … - In: Energy 44 (2012) 1, pp. 358-366

The hydrate-based carbon dioxide (CO2) capture from the integrated gasification combined cycle (IGCC) synthesis gas … plate on the bottom of the equipment. By the visual equipment, the hydrate formation and the hydrate shape are visually … captured. With the move of the gas bubble from the bottom to the top of the reactor, gas hydrate forms firstly from the gas …

Persistent link: https://www.econbiz.de/10011055513

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