Boiling Heat Transfer Characteristics of Nanofluids in  a Thermosyphon Loop

Abstract

Abstract: An experimental study was performed to understand the boiling characteristics of CuOwater nanofluids in a thermosyphon loop. Experiments were carried at varied subatmospheric pressures. Effects of the mass concentration and the operating pressure on the heat transfer characteristics were mainly discussed. The results indicate that nanofluids can enhance both the boiling heat transfer coefficient (HTC) and the critical heat flux(CHF). The effect of the operating pressure on the heat transfer coefficient is obvious, while the effect is weak on CHF. There exists an optimal mass concentration of nanoparticles, which corresponds to the largest HTC enhancement. The HTC enhancement results from the effects of both the coating layer and the working fluids. The CHF enhancement results mainly from the coating layer formed by nanoparticles during the heating process.

Key words: nanofluid; , boiling, thermosyphon loop, heat transfer enhancement, flow boiling

CLC Number:

TK124

LIU Zhen-Hua, YANG Xue-Fei. Boiling Heat Transfer Characteristics of Nanofluids in a Thermosyphon Loop[J]. Journal of Shanghai Jiaotong University, 2011, 45(06): 890-894.

References

［1］Eastman J A, Choi S U S, Li S, et al. Anomalously increased effective thermal conductivities of ethylene glycolbased nanofluids containing copper nanoparticles ［J］. Applied Physics Letters, 2001, 78(6): 718720.

［2］Das S K, Putra N, Thiesen P, et al. Temperature dependence of thermal conductivity enhancement for nanofluids ［J］. Journal of Heat Transfer, 2003, 125(4): 567574.

［3］Wen D, Ding Y. Experimental investigation into convective heat transfer of nanofluids at the entrance region under laminar flow conditions ［J］. International Journal of Heat and Mass Transfer, 2004, 47(24): 51815188.

［4］廖亮,刘振华. CuO纳米颗粒悬浮液在小管内的流动和强制对流换热特性［J］.上海交通大学报, 2009, 43(5): 789794.

LIAO Liang, LIU Zhenhua. Experimental research on forced convective flow drag and heat trasfer of CuO nanoparticles suspensions in a small tube ［J］. Journal of Shanghai Jiaotong University, 2009, 43(5): 789794.

［5］Vassallo P, Kumar R, D’Amico S. Pool boiling heat transfer experiments in silicawater nanofluids ［J］. International Journal of Heat and Mass Transfer, 2004, 47(2): 407411.

［6］廖亮, 刘振华, 熊建国. 低压条件下碳纳米管悬浮液的池内沸腾换热特性实验研究［J］.上海交通大学学报, 2009, 43(2): 243246.

LIAO Liang, LIU Zhenhua, XIONG Jianguo. Pool boiling heat transfer of carbon nanotube suspensions at subatmospheric pressures［J］. Journal of Shanghai Jiaotong University, 2009,43(2): 243246.

［7］Chien H T, Tsai C Y, Chen P H, et al. Improvement on thermal performance of a diskshaped miniature heat pipe with nanofluids. ［C］// Proceedings of the Fifth International Conference on Electronic Packaging Technology (IEEE Cat No 03EX750). Shanghai: IEEE, 2003: 389391.

［8］Kang S W, Wei W C, Tsai S H, et al. Experimental investigation of silver nanofluid on heat pipe thermal performance ［J］. Applied Thermal Engineering, 2006, 26(17): 2377–2382.

［9］Riehl R R. Analysis of loop heat pipe behaviour using nanofluid. ［C］// Proceedings of Heat Powered Cycles International Conference (HPC). New Castle, UK:［s.n.］, 2006: 1114.

［10］Ma H B, Wilson C, Borgmeyer B, et al. Effect of nanofluids on the heat transport capability in an oscillating heat pipe ［J］. Applied Physics Letters, 2006, 88(14): 143116.

［11］Kim H, Kim J, Kim M H. Effect of nanoparticles on CHF enhancement in pool boiling of nanofluids ［J］. International Journal of Heat and Mass Transfer, 2006, 49(25): 50705074.

［12］彭玉辉,黄素逸,黄锟剑.纳米颗粒强化热虹吸管传热特性的研究［J］. 热能功力工程, 2005, 20(2): 138141.

PENG Yuhui, HUANG Suyi, HUANG Kunjian. Experimental study of intensified heat transfer characteristics of a thermosiphon htrough the addition of nanoparticles ［J］. Journal of Engineering for Thermal Energy & Power, 2005, 20(2): 138141.

［13］李启明,彭晓峰,王补宣.纳米流体振荡热管内部流动和传热特性［J］. 工程热物理学报， 2008, 29(3): 479481.

LI Qiming, PENG Xiaofeng, WANG Buxuan. Flow and heat transfer characteristics in nanofluid oscillating heat pipes ［J］. Journal of Engineering Thermophysics, 2008, 29(3): 479481.

［14］舒涛,刘振华. 纳米流体在水平圆管型丝网热管换热强化中的应用［J］.航空动力学报, 2008, 23(10): 17951799.

SHU Tao, LIU Zhenhua. Application of nanofluid in thermal performance enhancement of horizontal screen heat pipe ［J］. Journal of Aerospace Power, 2008, 23(10): 17951799.

［15］吕伦春. 纳米流体强化毛细泵回路（CPL）换热特性实验研究［D］. 上海：上海交通大学机械与动力工程学院, 2009.

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Boiling Heat Transfer Characteristics of Nanofluids in a Thermosyphon Loop

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