Experimental investigation on TBAB clathrate hydrate slurry flows in a horizontal tube: Forced convective heat transfer behaviors

Song, Wei; Xiao, Rui; Huang, Chenguang; He, Shan; Dong, Kaijun; Zhou, Feng

doi:10.1016/j.ijrefrig.2009.04.008

Cited by 69 publications

(21 citation statements)

References 8 publications

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“…This structure also provides unique properties of melting temperatures and gas capture. [3][4][5][6][7][8][9][10][11][12] By the combination of ions, [3][4][5] control of functional properties of these materials, such as melting temperature, latent heat, gas selectivity, and gas capacity, is expected. Above all, semiclathrate hydrates have attracted considerable attention as one of phase change materials for thermal storage.…”

Section: Introductionmentioning

confidence: 99%

“…Above all, semiclathrate hydrates have attracted considerable attention as one of phase change materials for thermal storage. 6 Ionic guest substances are ions of which cations usually have suitably-sized alkyl chains. Tetra-n-butylammonium (TBA) and tetra-n-butylphosphonium (TBP) cations are used widely as ionic guest molecules because of their good availability, as recently known for ionic liquids.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic stabilization of semiclathrate hydrates by hydrophilic group

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermodynamic stabilization of semiclathrate hydrates by hydrophilic group

et al. 2017

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“…Again, an increase in the operating pressure would lead to increase in velocity along the pipelength; this would increase agitation in the transport fluid which aids hydrate formation through turbulence (Wenji et al, 2009). At choke also, temperature drop will be experienced through Joule Thompson effects to further promote the formation (Harun and Watt, 2009) while the presence of welded spots (elbows, tee, etc), dirt, scales, slits and sands along the pipe will make good nucleation sites and the available free-water will be an enhancer due to gas-water interface.…”

Section: Resultsmentioning

confidence: 99%

Modeling the Contribution of Gas Hydrate to Corrosion Rate Along the Subsea Pipelines

Obanijesu

Pareek

Tade

2014

Petroleum Science and Technology

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This study developed a corrosion predictive model along the deepwater gas pipelines with hydrate as the corroding agent. The model was developed and simulated with primary focus on the thermodynamic properties of each component of the gas mixture and a solution algorithm written with Matlab 6.5 code. The model was validated by comparing the generated results with the outputs of already established laboratory and mathematical corrosion studies; and the trends of the results obtained comparatively agreed with these studies to confirm its reliability. The model correctly predicted the relationships between corrosion rate and other thermodynamic parameters such as temperature, pressure, wall shear stress, velocity loss and pH. This study showed that hydrates can initiate galvanic corrosion, stress cracking corrosion and erosion-corrosion amongst others. Furthermore, the resulting corrosion rate from the hydrates could be as high as 174mm/year (0.48mm/day). This is extremely alarming compared to the industry's aim to operate below 2mm/year. At this rate, an underwater pipeline would be subjected to full bore rupture within some days if corrective measures are not quickly taken; hence, the need for further studies.

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“…Compared with water the conventional heat transfer fluid in building energy systems, a NPCM slurry is a new, high performance fluid that can achieve enhanced heat transfer. For better utilization of the NPCM slurry, many research have been devoted to study the thermo‐fluidic performances of the NPCM slurry . Goel et al experimentally studied the heat transfer performance of the NPCM slurry in a circular duct in laminar flow.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of nanoencapsulated phase change material inside double pipe heat exchanger

Iranfar

Saraei

2019

Heat Trans. Asian Res.

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Nanoencapsulated phase change material (NPCM) slurry is a dispersion where the phase change material (PCM) is dispersed in fluid. Compared with fluid, these nanofluids have a higher heat capacity during the phase change and a possible enhancement, as a result of this phase change, in the heat transfer phenomenon. To appreciate the merits, in terms of energy, a numerical study has been carried out with fluid based on NPCM inside double pipe heat exchanger. The numerical simulation results have been validated using experimental heat transfer data. The Reynolds and Nusselt numbers have been determined using thermal conductivity and viscosity evaluated in the same conditions as those in numerical model. The results obtained show an improvement of this energetic criterion at low mass flow rate compared with the base fluid. Analysis of the numerical and analytical results reveal that higher inlet flow rate and NPCM concentration results in higher heat transfer rate. In addition, increasing NPCM slurry temperature decreases its performance due to fast melting of PCM inside the tube. K E Y W O R D S double pipe, heat transfer, nanocapsule, phase change, slurry

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Experimental investigation on TBAB clathrate hydrate slurry flows in a horizontal tube: Forced convective heat transfer behaviors

Cited by 69 publications

References 8 publications

Thermodynamic stabilization of semiclathrate hydrates by hydrophilic group

Thermodynamic stabilization of semiclathrate hydrates by hydrophilic group

Modeling the Contribution of Gas Hydrate to Corrosion Rate Along the Subsea Pipelines

Numerical study of nanoencapsulated phase change material inside double pipe heat exchanger

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