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Pressure distribution inside oscillating heat pipe charged with aqueous Al_2O_3 nanoparticles,MWCNTs and their hybrid

Pressure distribution inside oscillating heat pipe charged with aqueous Al_2O_3 nanoparticles,MWCNTs and their hybrid
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摘要 Effective thermal performance of oscillating heat pipe(OHP)is driven by inside pressure distribution.Heat transfer phenomena were reported in terms of pressure and frequency of pressure fluctuation in multi loop OHP charged with aqueous Al2O3 and MWCNTs/Al2O3 nanoparticles.The influences on thermal resistance of aqueous Al2O3,MWCNTs as well as the hybrid of them in OHP having 3 mm in inner diameter were investigated at 60% filling ratio.Experimental results show that thermal characteristics are significantly inter-related with pressure distribution and strongly depend upon the number of pressure fluctuations with time.Frequency of pressure depends upon the power input in evaporative section.A little inclusion of MWCNTs into aqueous Al2O3 at 60% filling ratio achieves the highest fluctuation frequency and the lowest thermal resistance at any evaporator power input though different nanofluids cause different thermal performances of OHPs. Effective thermal performance of oscillating heat pipe （OHP） is driven by inside pressure distribution. Heat transfer phenomena were reported in terms of pressure and frequency of pressure fluctuation in multi loop OHP charged with aqueous Al2O3 and MWCNTs/Al2O3 nanoparticles. The influences on thermal resistance of aqueous Al2O3, MWCNTs as well as the hybrid of them in OHP having 3 mm in inner diameter were investigated at 60% filling ratio. Experimental results show that thermal characteristics are significantly inter-related with pressure distribution and strongly depend upon the number of pressure fluctuations with time. Frequency of pressure depends upon the power input in evaporative section. A little inclusion of MWCNTs into aqueous Al2O3 at 60% filling ratio achieves the highest fluctuation frequency and the lowest thermal resistance at any evaporator power input though different nanofluids cause different thermal performances of OHPs.
作者 Md.Riyad Tanshen Sinil Lee Junhyo Kim Donghoon Kang Jungpil Noh HanShik Chung HyoMin Jeong Sunchul Huh
机构地区 Department of Energy and Mechanical Engineering Department of Marine Engineering Department of Naval Architecture and Ocean Engineering Department of Energy and Mechanical Engineering
出处 《Journal of Central South University》 SCIE EI CAS 2014年第6期2341-2348,共8页 中南大学学报（英文版）
基金 Project(NRF-2012R1A1A4A01002052)supported by Basic Science Research Program through the National Research Foundation(NRF)funded by the Ministry of Education,Science and Technology of Korea
关键词 oscillating heat pipe pressure fluctuation thermal resistance nanofluids 多壁碳纳米管 压力分布 振荡热管 氧化铝 纳米颗粒 控水 管内 杂交
分类号 TB383.1 [一般工业技术—材料科学与工程]
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参考文献21

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二级参考文献15

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共引文献2

Journal of Central South University
2014年 第6期

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