Experimental performance of direct absorption collector using heat-transfer oil added with different nanoparticles

XU Guoying; LI Lingzhi; ZHANG Xiaosong; SUN Yueming

doi:10.3969/j.issn.0438-1157.2014.z2.043

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Experimental performance of direct absorption collector using heat-transfer oil added with different nanoparticles

更新时间：2025-12-10

- Experimental performance of direct absorption collector using heat-transfer oil added with different nanoparticles
- CIESC Journal Issue z2, Pages: 293-298(2014)
- 作者机构：
  
  1. 东南大学能源与环境学院,江苏,南京,210096
  2. 东南大学化学与化工学院,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.z2.043
  CLC： K512
- Online First：30 December 2014，
  
  Published：30 December 2014
- 稿件说明：
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XU Guoying, LI Lingzhi, ZHANG Xiaosong, et al. Experimental performance of direct absorption collector using heat-transfer oil added with different nanoparticles[J]. CIESC Journal, 2014, (z2): 293-298.
DOI：

XU Guoying, LI Lingzhi, ZHANG Xiaosong, et al. Experimental performance of direct absorption collector using heat-transfer oil added with different nanoparticles[J]. CIESC Journal, 2014, (z2): 293-298. DOI： 10.3969/j.issn.0438-1157.2014.z2.043.

摘要

提出并探讨了采用导热油基液纳米流体为集热介质的太阳能直接吸收式集热方法。分别对添加纳米CuO、Fe3O4、石墨颗粒的导热油基液纳米流体进行了闷晒实验研究。结果显示:添加上述纳米颗粒均可显著提高导热油对太阳辐射的吸收;80℃以内工况下

纳米流体的直接吸收集热效率要高于传统镀膜真空管内导热油间接吸收的集热效率;但在更高温度工况下的对外散热损失增大

效率迅速下降。同时

实验对比分析了纳米颗粒的添加质量分数对导热油-CuO纳米流体集热效率、散热损失系数等性能参数的影响规律

得出了最佳纳米颗粒添加比例范围。

Abstract

A kind of direct solar heat collection system

in which heat-transfer oil added with nanoparticles as the absorbing medium in vacuum tube without coating was proposed. Different kind of oil based nanofluids respectively added with CuO、Fe3O4 and graphite nanoparticles for solar heat collection were experimentally investigated. Results show that a greatly enhancement achieved in the solar radiation absorption capacity when add nanoparticles into the heat-transfer oil. Within 80℃

direct absorption collecting efficiency using nanofluids is higher than that of using traditional film coating vacuum tube solar collector

while the heat loss increased rapidly on a higher temperature condition. Furthermore

efficiencies of oil-based CuO nanofluids with different mass fractions were also comparatively analyzed

and the optimum added mass fraction was obtained.

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