Heat transfer property of lauryl alcohol-capric acid-nanoparticle composite phase change materials

HUANG Yan; ZHANG Xuelai

doi:10.11949/j.issn.0438-1157.20151968

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Heat transfer property of lauryl alcohol-capric acid-nanoparticle composite phase change materials

更新时间：2025-11-26

- Heat transfer property of lauryl alcohol-capric acid-nanoparticle composite phase change materials
- CIESC Journal Issue 6, Pages: 2271-2276(2016)
- 作者机构：
  
  上海海事大学商船学院,上海,201306
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151968
  CLC： K02
- Online First：05 June 2016，
  
  Published：05 June 2016
- 稿件说明：
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HUANG Yan, ZHANG Xuelai. Heat transfer property of lauryl alcohol-capric acid-nanoparticle composite phase change materials[J]. CIESC Journal, 2016, (6): 2271-2276.
DOI：

HUANG Yan, ZHANG Xuelai. Heat transfer property of lauryl alcohol-capric acid-nanoparticle composite phase change materials[J]. CIESC Journal, 2016, (6): 2271-2276. DOI： 10.11949/j.issn.0438-1157.20151968.

摘要

针对有机相变材料热导率低的共性

以质量比为58.47:41.53的脂肪烃类低共熔有机物十二醇(DA)-癸酸(CA)为基液

添加纳米粒子MWNT、Cu、Al2O3及分散剂SDBS制备出纳米复合相变材料

从纳米粒子种类、添加浓度及超声时间方面研究其对复合有机相变材料热物性的影响。实验发现MWNT、Cu、Al2O3的添加都可以不同程度上提高DA-CA的热导率。当超声时间为50min、纳米粒子浓度均为0.1g·L-1时3种纳米复合材料的热导率大小依次是:MWNT>Al2O3>Cu。最优例:超声分散时间90min

DA-CA+MWNT(0.1g·L-1)+SDBS(0.2g·L-1)的热导率最大

为0.3602W·m-1·K-1

相较DA-CA提高了20.5%

在不影响基液热物性的基础上具有良好的热稳定性。

Abstract

To increase the thermal conductivity of organic phase change materials

the nanoparticles with high thermal conductivity

including multi-walled carbon nano-tubes (MWNTs)

Cu and Al2O3

were added into the organic composite PCMs of lauryl alcohol-capric acid (with mass ratio of 58.47:41.53)

respectively. The thermal conductivity coefficients of nano-organic composite PCMs were analyzed. The kinds and concentration of nanoparticles and the time of ultrasonic dispersion were the key influencing factors. The results showed that the thermal conductivity increased in different degree when the different mass fractions of MWNTs

Cu and Al2O3 were added. The thermal conductivity enhancement effects were in order of MWNTs

Al2O3 and Cu when mass fraction was 0.1 g·L-1 and ultrasonic dispersion time was 50 min. With the same kind of nanoparticles and ultrasonic dispersion time

the thermal conductivity enhancement effects were decreased as mass fraction was increased from 0.1 g·L-1 to 0.6 g·L-1. Excellently

compared with the original PCMs

the thermal conductivity increased by 20.5% when mass fraction of MWNTs was 0.1 g·L-1 and ultrasonic dispersion time was 90 min. The lauryl alcohol-capric acid+MWNTs (0.1 g·L-1) + sodium dodecyl bezene sulfonate (0.2 g·L-1) with good thermal stability had a limited influence on the phase change temperature of the original PCMs and decreased the degree of supercooling by 58.7%.

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