Thermal performance of natural gas hydrate wellbore with different insulation materials

Wang, Hui; Zheng, Bo; Xu, Taohong; Yuan, Yihui; Liu, Tao; Ma, Chunxin; Wang, Ning

doi:10.1007/s42114-021-00288-z

Cited by 6 publications

(1 citation statement)

References 36 publications

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“…The holding times of conventional insulation materials cannot satisfy these demands. Therefore, for unplanned shutin conditions, researchers have proposed the application of phase-change materials (PCMs) for pipe insulation, which can significantly extend the holding time [23,24].…”

Section: Introductionmentioning

confidence: 99%

High thermal storage polyurethane composite embedded with microencapsulated phase change materials and analysis of its unsteady heat transfer

Wang,

Dang,

Zheng

et al. 2023

Adv Compos Hybrid Mater

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Phase-change insulation materials can effectively extend the holding time of submarine oil and gas pipelines. Shape-stable phase-change composites have good application prospects owing to their chemical stability and leakage resistance. In this study, a microencapsulated phase-change material (MPCM)-embedded polyurethane (PU) composite (PU-MPCM) was prepared as an insulation material for subsea pipelines. The unsteady heat transfer process of the PU-MPCM composite was simulated using COMSOL Multiphysics, and an insulation experiment was conducted on this composite. PU-MPCM exhibited a high thermal storage performance and favorable shape stability. The relative effective enthalpy coefficients of PU-MPCM composites with different MPCM contents were greater than 80%. The maximum MPCM content in the PU-MPCM composite was 24 wt% (PU-MPCM24). The melting enthalpy of PU-MPCM24 reached 35.95 J/g, and its effective thermal conductivity was as low as 0.16 W/(m•K). The holding time of PU-MPCM24 could be increased by 229.79% compared with that of pure PU. The PU-MPCM composite exhibited good mechanical properties and low water absorption, making it suitable for underwater environments. Owing to its low-cost preparation process and excellent thermal properties, PU-MPCM24 can be considered a potential insulation material for practical applications in subsea pipelines.

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Section: Introductionmentioning

confidence: 99%

High thermal storage polyurethane composite embedded with microencapsulated phase change materials and analysis of its unsteady heat transfer

Wang,

Dang,

Zheng

et al. 2023

Adv Compos Hybrid Mater

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Improving thermal conductivity of polyethylene/polypropylene by styrene-ethylene-propylene-styrene wrapping hexagonal boron nitride at the phase interface

Jing

Zhu

et al. 2022

Adv Compos Hybrid Mater

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In this work, the polyethylene (PE) and polypropylene (PP) percentage is controlled at 50:50 to make the composite form a co-continuous structure; the hexagonal boron nitride (h-BN) is wrapped by thermoplastic elastomer styrene-ethylene-propylene-styrene (SEPS). This approach enables the localized distribution of h-BN at the interface of the co-continuous structure of PE/PP/SEPS/h-BN composite material, allowing the construction of a heat conduction path, thereby improving the thermal conductivity of PE/PP. Theoretical calculation predicted the localized distribution of SEPS at the interface of the PE/PP composite co-continuous structure. 2The thermal conductivity of the composites can be improved by 57.7% by adding 10 wt% h-BN, presenting a commercial potential of such composites in heat dissipation applications.

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Multi-functional phase change materials with anti-liquid leakage, shape memory, switchable optical transparency and thermal energy storage

Zhang

Mai

et al. 2022

Adv Compos Hybrid Mater

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Thermal performance of natural gas hydrate wellbore with different insulation materials

Cited by 6 publications

References 36 publications

High thermal storage polyurethane composite embedded with microencapsulated phase change materials and analysis of its unsteady heat transfer

High thermal storage polyurethane composite embedded with microencapsulated phase change materials and analysis of its unsteady heat transfer

Improving thermal conductivity of polyethylene/polypropylene by styrene-ethylene-propylene-styrene wrapping hexagonal boron nitride at the phase interface

Multi-functional phase change materials with anti-liquid leakage, shape memory, switchable optical transparency and thermal energy storage

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