Effects of nanoparticles on CO<sub>2</sub> hydrate thermal conductivity

LIU Ni; HONG Chunfang; LIU Xiuting

doi:10.11949/j.issn.0438-1157.20161665

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Effects of nanoparticles on CO₂ hydrate thermal conductivity

更新时间：2025-12-10

- Effects of nanoparticles on CO₂ hydrate thermal conductivity
- CIESC Journal Issue 9, Pages: 3404-3408(2017)
- 作者机构：
  
  上海理工大学能源与动力工程学院,上海,200093
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161665
  CLC： Q04
- Online First：05 September 2017，
  
  Published：05 September 2017
- 稿件说明：
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LIU Ni, HONG Chunfang, LIU Xiuting. Effects of nanoparticles on CO₂ hydrate thermal conductivity[J]. CIESC Journal, 2017, (9): 3404-3408. DOI: 10.11949/j.issn.0438-1157.20161665.
DOI：

LIU Ni, HONG Chunfang, LIU Xiuting. Effects of nanoparticles on CO₂ hydrate thermal conductivity[J]. CIESC Journal, 2017, (9): 3404-3408. DOI: 10.11949/j.issn.0438-1157.20161665. DOI：

摘要

试验研究了不同种类（Al2O3、Cu、SiO2）、不同质量分数（0.05%、0.1%、0.15%）及不同粒径（10、30、50 nm）的纳米粒子对CO2水合物热导率的影响。结果表明温度为-5~5℃时，纯CO2水合物热导率为0.553~0.5861 W·m-1·K-1，具有玻璃体的变化特性。分散剂SDBS的加入，可改善CO2水合物-纳米粒子体系的导热性能。在相同的质量分数和粒径下，纳米Cu粒子对CO2水合物热导率的增强作用最好，但综合考虑水合物生成特性和溶液悬浮稳定性，选用纳米Al2O3粒子较合适。Al2O3粒子粒径越小，水合物热导率越大，15 nm比50 nm纳米粒子体系中CO2水合物热导率的增长率平均提高了12.7%。此外，CO2水合物热导率随Al2O3粒子质量分数的增大而增大，质量分数由0.05%增加到0.15%时，水合物热导率的增长率由4.2%提高到8.2%。

Abstract

The thermal conductivity of CO2 hydrate was measured in this study. The effects of three kinds of nanoparticles

including Al2O3

and SiO2

with different mass fractions (0.05%

0.1%

and 0.15%) and different nanoparticle dimensions (10

and 50 nm) on CO2 hydrate thermal conductivity were investigated. The results show that CO2 hydrate thermal conductivity increases with the increase of temperature

ranging from 0.553 to 0.5861 W·m-1·K-1 at -5-5℃. And the additive of dispersant SDBS has positive influence on thermal conductivity of CO2 hydrate-nanoparticle system. With the same mass fraction and particle size

Cu nanoparticles show better effect to enhance CO2 hydrate thermal conductivity than Al2O3 and SiO2 nanoparticles. But considering the formation of CO2 hydrate and the suspension stability of solution

Al2O3 is more suitable to be used as the promoter of thermal conductivity. The thermal conductivity of CO2 hydrate increases with the decrease of particle size of the Al2O3 nanoparticles. The increase rate of thermal conductivity in 15 nm hydrate-nanoparticle system is 12.7% higher than that in 50 nm hydrate-nanoparticle system. In addition

the increase of CO2 hydrate thermal conductivity is improved from 4.2% to 8.2% when the mass fraction of Al2O3 nanoparticles increases from 0.05% to 0.15%.

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Effects of nanoparticles on CO2 hydrate thermal conductivity

DOI：10.11949/j.issn.0438-1157.20161665

摘要

Abstract

关键词

Keywords

references

Effects of nanoparticles on CO₂ hydrate thermal conductivity