PDF Publication Title:
Text from PDF Page: 011
970 H. Peng et al. / Experimental Thermal and Fluid Science 35 (2011) 960–970 (1) The presence of surfactant enhances the nucleate pool boil- ing heat transfer of Cu-R113 nanofluid on most conditions, but deteriorates the nucleate pool boiling heat transfer at high surfactant concentrations. The ratio of nucleate pool boiling heat transfer coefficient of refrigerant-based nano- fluid with surfactant to that without surfactant, SER, are in the ranges of 1.12–1.67, 0.94–1.39, and 0.85–1.29 for SDS, CTAB and Span-80, respectively. (2) For each type of surfactant, the SER increases with the increase of surfactant concentration and then decreases, pre- senting the maximum value at the optimal concentration. Under the experimental conditions, the optimal concentra- tions for SDS, CTAB and Span-80 are 2000 ppm, 500 ppm and 1000 ppm, respectively. At a fixed surfactant concentra- tion, the SER increases with the decrease of nanoparticle concentration. (3) The values of SER are in the order of SDS > CTAB > Span-80, which is opposite to the order of their density values, mean- ing that the surfactant with smaller density gives more enhancement of the nucleate pool boiling heat transfer. (4) A correlation for predicting the nucleate pool boiling heat transfer coefficient of refrigerant-based nanofluid with sur- factant is proposed, and the predicted values can agree with 92% of the experimental data within a deviation of ±25%. Acknowledgements The authors gratefully acknowledge the support from the Na- tional Natural Science Foundation of China (Grant No. 50976065) and Shanghai Postdoctoral Scientific Program (Grant No. 09R21413500). References [1] W.T. Jiang, G.L. Ding, H. Peng, Y.F. Gao, K.J. Wang, Experimental and model research on thermal conductivity of nanorefrigerant, HVAC&R Research 15 (3) (2009) 651–669. [2] R.X. Wang, B. Hao, G.Z. Xie, A refrigerating system using HFC134a and mineral lubricant appended with n-TiO2(R) as working fluids, in: Proceedings of the 4th International Symposium on HAVC, Tsinghua University Press, Beijing, China, 2003, pp. 888–892. [3] K.J. Wang, K. Shiromoto, T. Mizogami, Experiment study on the effect of nano- scale particle on the condensation process, in: Proceeding of the 22nd International Congress of Refrigeration, Beijing, China, 2007, Paper No. B1- 1005. [4] S.S. Bi, L. Shi, L.L. Zhang, Application of nanoparticles in domestic refrigerators, Applied Thermal Engineering 28 (2008) 1834–1843. [5] T.A.T. Wang, J.P. Hartnett, Pool boiling of heat transfer from a horizontal wire to aqueous surfactant solutions, in: Proceedings of 10th International Heat Transfer Conference, Brighton, 1994, pp. 177–182. [6] W.T. Wu, Y.M. Yang, J.R. Maa, Enhancement of nucleate boiling heat transfer and depression of surface tension by surfactant additives, Journal of Heat Transfer 117 (1995) 526–529. [7] W.T. Wu, Y.M. Yang, J.R. Maa, Nucleate pool boiling enhancement by means of surfactant additives, Experimental Thermal and Fluid Science 18 (1998) 195– 209. [8] G. Hetsroni, J.L. Zakin, Z. Lin, A. Mosyak, E.A. Pancallo, R. Rozenblit, The effect of surfactants on bubble growth, wall thermal patterns and heat transfer in pool boiling, International Journal of Heat and Mass Transfer 44 (2001) 485– 497. [9] Y.M. Yang, J.R. Maa, On the criteria of nucleate pool boiling enhancement by surfactant addition to water, Institution of Chemical Engineers 79 (2001) 409–415. Part A. [10] V.M. Wasekar, R.M. Manglik, The influence of additive molecular weight and ionic nature on the pool boiling performance of aqueous surfactant solutions, International Journal of Heat and Mass Transfer 45 (2002) 483–493. [11] J. Zhang, R.M. Manglik, Effect of ethoxylation and molecular weight of cationic surfactants on nucleate boiling in aqueous solutions, Journal of Heat Transfer 126 (2004) 34–42. [12] D.S. Wen, B.X. Wang, Effect of surface wettability on nucleate pool boiling heat transfer for surfactant solutions, International Journal of Heat and Mass Transfer 45 (2002) 1739–1747. [13] M.A. Kedzieski, Enhancement of R123 pool boiling by the addition of N- hexane, Journal of Enhanced Heat Transfer 6 (1999) 343–355. [14] Y.K. Tan, H.T. Wang, Solid additives for enhancing nucleate pool boiling of binary mixtures on a smooth and a Gewa-T tube, Institute of Chemical Engineering Symposium Series 135 (6) (1994) 117–122. [15] T. Inoue, Y. Teruya, M. Monde, Enhancement of pool boiling heat transfer in water and ethanol/water mixtures with surface-active agent, International Journal of Heat and Mass Transfer 47 (2004) 5555–5563. [16] M. Chopkar, A.K. Das, I. Manna, P.K. Das, Pool boiling heat transfer characteristics of ZrO2–water nanofluids from a flat surface in a pool, Heat Mass Transfer 44 (2008) 999–1004. [17] R. Kathiravan, R. Kumar, A. Gupta, R. Chandra, Characterization and pool boiling heat transfer studies of nanofluids, Journal of Heat Transfer 131 (081902) (2009) 1–8. [18] V. Trisaksri, S. Wongwises, Nucleate pool boiling heat transfer of TiO2-R141b nanofluids, International Journal of Heat and Mass Transfer 52 (5–6) (2009) 1582–1588. [19] Y.M. Xuan, Q. Li, Heat transfer enhancement of nanofluids, International Journal of Heat and Fluid Flow 21 (2000) 58–64. [20] J.A. Eastman, S.U.S. Choi, S. Li, W. Yu, L.J. Thompson, Anomalously increased effective thermal conductivity of ethylene glycol based nanofluids containing copper nanoparticles, Applied Physics Letters 78 (6) (2001) 718–720. [21] D.W. Zhou, Heat transfer enhancement of copper nanofluid with acoustic cavitation, International Journal of Heat and Mass Transfer 47 (2004) 3109– 3117. [22] M.S. Liu, M.C. Lin, C.Y. Tsai, C.C. Wang, Enhancement of thermal conductivity with Cu for nanofluids using chemical reduction method, International Journal of Heat and Mass Transfer 49 (2006) 3028–3033. [23] X.F. Li, D.S. Zhu, X.J. Wang, N. Wang, J.W. Gao, H. Li, Thermal conductivity enhancement dependent PH and chemical surfactant for Cu–H2O nanofluids, Thermochimica Acta 469 (2008) 98–103. [24] H. Peng, G.L. Ding, H.T. Hu, W.T. Jiang, D.W. Zhuang, K.J. Wang, Nucleate pool boiling heat transfer characteristics of refrigerant/oil mixture with diamond nanoparticles, International Journal of Refrigeration 33 (2) (2010) 347–358. [25] G. Prakash Narayan, K.B. Anoop, S.K. Das, Effect of surface particle interaction on boiling heat transfer of nanoparticle suspensions, Journal of Applied Physics 102 (2007) 074317. [26] M.H. Shi, M.Q. Shuai, Z.Q. Chen, Q. Li, Y.M. Xuan, Study on pool boiling heat transfer of nano-particle suspensions on plate surface, Journal of Enhanced Heat Transfer 14 (3) (2007) 223–231. [27] A. Suriyawong, S. Wongwises, Nucleate pool boiling heat transfer characteristics of TiO2–water nanofluids at very low concentrations, Experimental Thermal and Fluid Science 34 (2010) 992–999. [28] J.T. Zhang, Experimental and computational study of nucleate pool boiling heat transfer in aqueous surfactant and polymer solutions, Ph.D. Dissertation, University of Cincinnati, 2004. [29] M.A. Kedzierski, M. Gong, Effect of CuO nanolubricant on R134a pool boiling heat transfer, International Journal of Refrigeration 32 (5) (2009) 791–799. [30] K. Stephan, M. Abdelsalam, Heat transfer correlations for natural convection boiling, International Journal of Heat and Mass Transfer 23 (1980) 73–87.PDF Image | Experimental Thermal and Fluid Science 35
PDF Search Title:
Experimental Thermal and Fluid Science 35Original File Name Searched:
SCI_J2011145.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)