Abstract

Given the high efficiency of heat pipes as heat transfer devices, which work with phase changing principle (evaporation and condensation) and without requiring any external energy input, the heat pipes have been utilized for many years in several areas. However, heat transfer in heat pipes is limited by physical phenomena which appear during its operation, called heat pipe limitations; these can limit and reduce its performance. At this state, the use of nanofluids instead of conventional fluids come a solution after that Choi and Eastman (1995) confirmed the feasibility of enhancing the thermal conductivity of fluids by adding nanoparticles. This paper represents a general description of heat pipes, including a brief historical perspective, principle of operation and explanation of main heat transfer limitations. The work shows the contribution of nanofluids in pushing back the heat pipe limitations.

References

[1] Amir faghri, heat pipes: review, opportunities and challenges, Frontiers in Heat Pipes (FHP) 5, 1 (2014)
[2] D.A.Reay, The perkins tube-a noteworthy contribution to heat exchanger technology, Heat Recorery Systems Vol. 2. No. 2, pp. 173-187 (1982)
[3] Maryam shafahi,vincenzobianco, kambizvafai, oronziomanca, Thermal performance of flatshaped heat pipes using nanofluids, International Journal of Heat and Mass Transfer 53 (2010) 1438–1445
[4] Leonard m.Poplaski, Steven p. Benn, Amir faghri, Thermal performance of heat pipes using nanofluids, International Journal of Heat and Mass Transfer 107 (2017) 358–371
[5] Steph.u.s. Choi, j.a. Eastman, Enhancing thermal conductivity of fluids with nanoparticles, in: the proceedings of the (1995) asme international mechanical engineering congress and exposition, asme, sanfrancisco, usa, (1995)
[6] Hosseinkavusi, Davoodtoghraie, A comprehensive study of the performance of a heat pipe by usingof various nanofluids, Advanced Powder Technology 28 (2017) 3074–3084
[7] Swati verma1, A.s verma, Deepak kumaryadav, Enhancement of heat transfer in heat pipes using silver/benzene based nano-coolants, international research journal of engineering and technology (irjet) 2017
[8] Matthias h. Buschmann, uwefranzke, improvement of thermosyphon performance by employing nanofluid, international journal of refrigeration 4 0 ( 2 0 1 4 )
[9] Hsin- Tang Chien,Chien-In Tsai,Ping-Hei Chen' and Po-Yeh, Improvement On Thermal Performance Of A Disk-Shaped Miniature Heat Pipe With Nanofluid, ICEPT (2003)
[10] Maryam Shafahi, Vincenzo Bianco, Kambiz Vafai, Oronzio Manca ,an investigation of the thermal performance of cylindrical heat pipes using nanofluids, International Journal of Heat and Mass Transfer 53 (2010) 376–383
[11] T.Grab, U. Gross, U. Franzke, M.H. Buschmann, Operation performance of thermosyphons employing titania and gold nanofluids, Int. J. Therm. Sci. 86 (2014) 352–364,
[12] K.M. Kim, I.C. Bang, Effects of graphene oxide nanofluids on heat pipe performance and capillary limits, Int. J. Therm. Sci. 100 (2016) 346–356.
[13] P.Gunnasegaran, M.Z. Abdullah, N.H. Shuaib, Influence of nanofluid on heat transfer in a loop heat pipe, Int. Commun. Heat Mass Transfer 47 (2013) 82–91.
[14] M.G. Mousa, Effect of nanofluid concentration on the performance of circular heat pipe, Ain Shams Eng. J. 2 (1) (2011) 63–69.
[15] Z. Wan, J. Deng, B. Li, Y. Xu, X. Wang, Y. Tang, Thermal performance of a miniature loop heat pipe using water-copper nanofluid, Appl. Therm. Eng. 78 (2015) 712–719.
[16] Riehl, S.N. Dos, Water-copper nanofluid application in an open loop pulsating heat pipe, Appl. Therm. Eng. 42 (2012) 6–10.
[17] G.Kumaresan, S. Venkatachalapathy, A review on heat transfer enhancement studies of heat pipes using nanofluids, Frontiers in Heat Pipes (FHP), 3, 043001 (2012)
[18] A.Brusly Solomon, K. Ramachandran, L. Godson Asirvatham, B.C. Pillai, Numerical analysis of a screen mesh wick heat pipe with Cu/water nanofluid, International Journal of Heat and Mass Transfer 75 (2014) 523–533
[19] Mohammadreza Soleymanihaa et al, Water-based graphene quantum dots dispersion as a high-performance longterm stable nanofluid for two-phased closed thermosyphons, International Communications in Heat and Mass Transfer 95 (2018) 147–154
[20] R.Sureshkumar , S.TharvesMohideen , N.Nethaji, Heat transfer characteristics of nanofluids in heat pipes: A review, Renewable and Sustainable Energy Reviews 20 (2013) 397–410
[21] W Rashmi, M Khalid, S S Ong and R Saidur, Preparation, thermo-physical properties and heat transfer enhancement of nanofluids, Materials Research Express 1 (2014) 032001
[22] Mahboobe Mahdavia, Saeed Tiaria, Sven De Schampheleireb, Songgang Qiu, Experimental study of the thermal characteristics of a heat pipe, Experimental Thermal and Fluid Science 93 (2018) 292–304