全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
化工学报  2015 

纳米石墨冷冻机油对R600a流动沸腾换热的影响

DOI: 10.11949/j.issn.0438-1157.20150761, PP. 4394-4400

Keywords: 纳米粒子,传热,测量,传热系数,预测,关联式

Full-Text   Cite this paper   Add to My Lib

Abstract:

搭建了纳米冷冻机油/制冷剂水平光管内流动沸腾换热测试实验台,研究了石墨/R600a纳米制冷剂在水平直光管内流动沸腾换热特性,分析了纳米石墨对含油制冷剂流动沸腾换热的影响。实验测试段为总长2.5m、外径9.52mm、内径8mm、壁厚0.76mm的紫铜管。在质量流速为150、200、250、300kg·m-2·s-1下,分别测量纯R600a、含油R600a、不同质量分数(0.05%、0.1%、0.2%)纳米石墨冷冻机油和R600a混合物在水平光滑圆管内流动沸腾传热系数随干度的变化趋势。实验结果表明:纳米石墨的添加增强了含油制冷剂的流动沸腾换热。实验获得了基于石墨的含油纳米制冷剂流动沸腾换热关联式,关联式的预测值与94.5%的实验数据偏差在±15%以内。

References

[1]  Meng Zhaoguo, Wu Daxiong, Wang Liangang, et al. Carbon nanotube glycol nanofluids: photo-thermal properties, thermal conductivities and rheological behavior [J]. Particuology, 2012, 10: 614-618.
[2]  Ali Celen, Alican ?ebi, Melih Aktas, et al. A review of nanorefrigerants: flow characteristics and applications [J]. International Journal of Refrigeration, 2014, 44: 125-140.
[3]  Mahbubul I M, Fadhilah S A, Saidur R, et al. Thermophysical properties and heat transfer performance of Al2O3/R134a nanorefrigerants [J]. International Journal of Heat and Mass Transfer, 2013, 57(1): 100-108.
[4]  Sun Bin, Di Yang. Flow boiling heat transfer characteristics of nano-refrigerants in a horizontal tube [J]. International Journal of Refrigeration, 2014, 38: 206-214.
[5]  Mahbubul I M, Saidura R, Amalina M A. Heat transfer and pressure drop characteristics of Al2O3-R141b nanorefrigerant in horizontal smooth circular tube [J]. Procedia Engineering, 2013, 56: 323-329.
[6]  SohelMurshed S M, Nieto de Castro C A, Louren?o M J V, Lopes M L M, Santos F J V. A review of boiling and convective heat transfer with nanofluids [J]. Renewable and Sustainable Energy Reviews, 2011, 15(5): 2342-2354.
[7]  Wen Dongsheng, Lin Guiping, Saeid Vafaei, Zhang Kai. Review of nanofluids for heat transfer applications [J]. Particuology, 2009, 7(2): 141-150.
[8]  Akhavan-Behabadi M A, Nasr M, Baqeri S. Experimental investigation of flow boiling heat transfer of R600a/oil/CuO in a plain horizontal tube [J]. Experimental Thermal and Fluid Science, 2014, 58: 105-111.
[9]  Henderson K, Park Y G, Liu L, et al. Flow boiling heat transfer of R134a-based nanofluids in a horizontal tube [J]. Int. J. Heat Mass. Transfer, 2010, 53: 944-951.
[10]  Peng H, Ding D, Jiang W, et al. Heat transfer characteristics of refrigerant-based nanofluid flow boiling inside a horizontal smooth tube [J]. Int. J. Refrigeration, 2009, 32: 1259-1270.
[11]  Lou Jiangfeng(娄江峰), Zhang Hua (张华), Wang Ruixiang(王瑞祥), Li Meng(李萌). Effect of particle morphology and concentration on density and viscosity of graphite nanolubricant [J]. CIESC Journal(化工学报), 2014, 65(10): 3846-3851.
[12]  Gungor K E, Winterton R H S. A general correlation for flow blowing in tubs and annuli [J]. International Journal of Heat and Mass Transfer, 1986, 29(3): 351-358.
[13]  Wen Maoyu, Jang Kuangjang, Ho Chingyen. The characteristics of boiling heat transfer and pressure drop of R-600a in a circular tube with porous inserts [J]. Applied Thermal Engineering, 2014, 64(1/2): 348-357.
[14]  Chen Ruey-Hung, Phuoc Tran X, Martello Donald. Surface tension of evaporating nanofluid droplets [J]. International Journal of Heat and Mass Transfer, 2011, 54(11/12): 2459-2466.
[15]  Peng H, Ding D, Jiang W, et al. Heat transfer characteristics of nanorefrigerant flow boiling inside tube [J]. Journal of Chemical Industry and Engineering(China)(化工学报), 2008,59(S2): 70-75.
[16]  Bennett D L, Chen J C. Forced convextive boiling in vertical tubs for saturated pure components and binary mixtures [J]. AIChE Journal, 1980, 26: 454-461.
[17]  Wu J M, Zhao Jiyun. A review of nanofluid heat transfer and critical heat flux enhancement—research gap to engineering application [J]. Progress in Nuclear Energy, 2013, 66: 13-24.
[18]  Pankaj Sharma, Il-Hyun Baek, Taehyun Cho, et al. Enhancement of thermal conductivity of ethylene glycol based silver nanofluids [J]. Powder Technology, 2011, 208(1): 7-19.
[19]  Yu Wei, Xie Huaqing, Chen Lifei, et al. Investigation of thermal conductivity and viscosity of ethylene glycol based ZnO nanofluid [J]. Thermochimica Acta, 2009, 491(1/2): 92-96.
[20]  Yu Wei, Xie Huaqing, Li Yang, et al. Experimental investigation on thermal conductivity and viscosity of aluminum nitride nanofluid [J]. Particuology, 2011, 9: 187-191.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133