Experimental investigation of thermal performance characteristics of sintered copper wicked and grooved heat pipes: A comparative study

Abstract

Heat pipes are most frequently used for thermal management solutions. Selection of right type of heat pipe for a specific scenario is utmost necessary for best outcomes. The purpose of this research is comparison of thermal performance characteristics of sintered copper wicked and grooved heat pipes, which are mostly used types of heat pipes. Distilled water filled heat pipes were tested through experimentation in gravity assisted position. Experimental outcomes have been compiled in terms of capillary pressure, operating temperature, thermal resistance and heat transfer coefficient. Capillary pressure is high in sintered heat pipes compared to grooved heat pipes irrespective of groove dimensions. Grooved heat pipes have lower operating temperature compared to sintered heat pipes at the same heat load. At 8 W, compared to sintered heat pipes, grooved heat pipes have 8.24% lower condenser surface temperature, 4.41% lower evaporator surface temperature and 7.79% lower saturation temperature. Thermal resistance of sintered heat pipe is much lower than grooved heat pipe. The maximum relative difference of 63.8% was observed at 8 W. Heat transfer coefficient of sintered heat pipe was observed double compared to grooved heat pipe at 8 W heat load. Thermal resistance and hence heat transfer coefficient of sintered heat pipe change almost in a linear manner with respect to heat load but unexpectedly turning point is observed in thermal resistance and heat transfer coefficient of grooved heat pipe. Grooved heat pipes attain equilibrium much earlier compared to sintered ones. Varying heat loads from 4 to 20 W causes variation in equilibrium establishment time from 7 to 4 min for grooved and from 10 to 7 min for sintered heat pipes.

Keywords

heat pipe / thermal resistance / heat transfer coefficient / thermal performance / capillary pressure

References

[1] NazariM A, GhasempourR, AhmadiM H, HeydarianG, ShafiiM B. Experimental investigation of graphene oxide nanofluid on heat transfer enhancement of pulsating heat pipe [J]. International Communications in Heat and Mass Transfer, 2018, 91: 90-94

[2] MASHAEI P R, SHAHRYARI M, FAZELI H, HOSSEINALIPOUR S M. Numerical simulation of nanofluid application in a horizontal mesh heat pipe with multiple heat sources: A smart fluid for high efficiency thermal system [J]. Appl Therm Eng, 2016(100): 1016–1030. DOI: https://doi.org/10.1016/j.applthermaleng.2016.02.111

[3] ÖmürC, UygurA B, Horuzİ, IşikH G, AyanS, KonarM. Incorporation of manufacturing constraints into an algorithm for the determination of maximum heat transport capacity of extruded axially grooved heat pipes [J]. International Journal of Thermal Sciences, 2018, 123: 181-190

[4] KhaliliM, ShafiiM B. Experimental and numerical investigation of the thermal performance of a novel sintered-wick heat pipe [J]. Applied Thermal Engineering, 2016, 94: 59-75

[5] ChenX-p, YeH-y, FanX-j, RenT, ZhangG-qi. A review of small heat pipes for electronics [J]. Applied Thermal Engineering, 2016, 96: 1-17

[6] WangY-b, WangB, ZhuK, LiH-l, HeW, LiuS-chun. Energy saving potential of using heat pipes for CPU cooling [J]. Applied Thermal Engineering, 2018, 143: 630-638

[7] DelpechB, MilaniM, MontorsiL, deB D, ChauhanA, AlmahmoudS, AxcellB, JouharaH. Energy efficiency enhancement and waste heat recovery in industrial processes by means of the heat pipe technology: Case of the ceramic industry [J]. Energy, 2018, 158: 656-665

[8] DelpechB, AxcellB, JouharaH. Experimental investigation of a radiative heat pipe for waste heat recovery in a ceramics kiln [J]. Energy, 2019, 170: 636-651

[9] MahajanG, ThompsonS M, ChoH. Energy and cost savings potential of oscillating heat pipes for waste heat recovery ventilation [J]. Energy Reports, 2017, 3: 46-53

[10] ChungC A, YangS-w, YangC Y, HsuC W, ChiuP Y. Experimental study on the hydrogen charge and discharge rates of metal hydride tanks using heat pipes to enhance heat transfer [J]. Applied Energy, 2013, 103: 581-587

[11] MalanD J, DobsonR T, DinterF. Solar thermal energy storage in power generation using phase change material with heat pipes and fins to enhance heat transfer [J]. Energy Procedia, 2015, 69: 925-936

[12] JafariM H, BijarchiM A, ShafiiM B. Experimental and numerical investigation of using pulsating heat pipes instead of fins in air-cooled heat exchangers [J]. Energy Conversion and Management, 2019, 181: 653-662

[13] TangY, ChenQ, GuanW-h, LiZ-t, YuB-h, YuanW. Thermal analysis of an LED module with a novelly assembled heat pipe heat sink [J]. Journal of Central South University, 2017, 24(4): 921-928

[14] NematiH, RahimzadehA R, WangC-chuan. Heat transfer simulation of annular elliptical fin-and-tube heat exchanger by transition SST model [J]. Journal of Central South University, 2020, 27(8): 2324-2337

[15] TaleshB H R, AziziA, SaffariH. Dropwise condensation heat transfer enhancement on surfaces micro/nano structured by a two-step electrodeposition process [J]. Journal of Central South University, 2019, 26(5): 1065-1076

[16] NiuR-p, KuangD-q, WangS-z, ChenX-yi. Field synergy analysis of different flow patterns in falling-film dehumidification system with horizontal pipes [J]. Journal of Central South University, 2020, 27(8): 2353-2366

[17] LiY, ZhouW-j, HeJ-b, YanY-y, LiB, ZengZ-xin. Thermal performance of ultra-thin flattened heat pipes with composite wick structure [J]. Applied Thermal Engineering, 2016, 102: 487-499

[18] RusselM K, YoungC, CottonJ S, ChingC Y. The effect of orientation on U-shaped grooved and sintered wick heat pipes [J]. Applied Thermal Engineering, 2011, 31(1): 69-76

[19] KumaresanG, VenkatachalapathyS, AsirvathamL G, WongwisesS. Comparative study on heat transfer characteristics of sintered and mesh wick heat pipes using CuO nanofluids [J]. International Communications in Heat and Mass Transfer, 2014, 57: 208-215

[20] KangS W, WeiW C, TsaiS H, HuangC C. Experimental investigation of nanofluids on sintered heat pipe thermal performance [J]. Appl Therm Eng, 2009, 29(56): 973-979

[21] AsirvathamL G, NimmagaddaR, WongwisesS. Heat transfer performance of screen mesh wick heat pipes using silver-water nanofluid [J]. International Journal of Heat and Mass Transfer, 2013, 60: 201-209

[22] HuminicG, HuminicA. Numerical study on heat transfer characteristics of thermosyphon heat pipes using nanofluids [J]. Energy Conversion and Management, 2013, 76: 393-399

[23] MehraliM, SadeghinezhadE, AzizianR, AkhianiA R, TahanL S, MehraliM, MetselaarH S C. Effect of nitrogen-doped graphene nanofluid on the thermal performance of the grooved copper heat pipe [J]. Energy Conversion and Management, 2016, 118: 459-473

[24] GhanbarpourM, NikkamN, KhodabandehR, ToprakM S. Thermal performance of inclined screen mesh heat pipes using silver nanofluids [J]. International Communications in Heat and Mass Transfer, 2015, 67: 14-20

[25] VijayakumarM, NavaneethakrishnanP, KumaresanG, KamatchiR. A study on heat transfer characteristics of inclined copper sintered wick heat pipe using surfactant free CuO and Al₂O₃ nanofluids [J]. Journal of the Taiwan Institute of Chemical Engineers, 2017, 81: 190-198

[26] DoK H, HaH J, JangS P. Thermal resistance of screen mesh wick heat pipes using the water-based Al₂O₃ nanofluids [J]. International Journal of Heat and Mass Transfer, 2010, 53(2526): 5888-5894

[27] PoplaskiL M, BennS P, FaghriA. Thermal performance of heat pipes using nanofluids [J]. International Journal of Heat and Mass Transfer, 2017, 107: 358-371

[28] HuY-x, LiuT-q, LiX-y, WangS-feng. Heat transfer enhancement of micro oscillating heat pipes with self-rewetting fluid [J]. International Journal of Heat and Mass Transfer, 2014, 70: 496-503

[29] NareshY, ShriV K, BalajiC. Experimental investigations of the thermal performance of self-rewetting fluids in internally finned wickless heat pipes [J]. Experimental Thermal and Fluid Science, 2018, 92: 436-446

[30] SavinoR, DiP R, CecereA, FortezzaR. Self-rewetting heat transfer fluids and nanobrines for space heat pipes [J]. Acta Astronautica, 2010, 67(910): 1030-1037

[31] SavinoR, DeC D, CecereA. Flow visualization and analysis of self-rewetting fluids in a model heat pipe [J]. International Journal of Heat and Mass Transfer, 2017, 115: 581-591

[32] SavinoR, CecereA, DiP R. International Flow Surface tension-driven flow in wickless heat pipes with self-rewetting fluids grad σ bubble velocity T+ ΔT [J]. Int J Heat Fluid Flow, 2009, 30(2): 380-388

[33] SinghM, DatlaN V, KondarajuS, BahgaS S. Enhanced thermal performance of micro heat pipes through optimization of wettability gradient [J]. Applied Thermal Engineering, 2018, 143: 350-357

[34] LiuZ-h, LiY-yang. A new frontier of nanofluid research–Application of nanofluids in heat pipes [J]. International Journal of Heat and Mass Transfer, 2012, 55(2324): 6786-6797

[35] ChenJ S, ChouJ H. Cooling performance of flat plate heat pipes with different liquid filling ratios [J]. International Journal of Heat and Mass Transfer, 2014, 77: 874-882

[36] YangK-m, CongZ, MaoY-d, ZhangX-li. Numerical simulation study of the heat transfer characteristic in Q -shape grooved heat pipes [J]. Procedia Engineering, 2017, 205: 3916-3922

[37] KhalifaA, TanL, DateA, AkbarzadehA. Performance of suspended finned heat pipes in high-temperature latent heat thermal energy storage [J]. Applied Thermal Engineering, 2015, 81: 242-252

[38] NazariM A, AhmadiM H, SadeghzadehM. A review on application of nanofluid in various types of heat pipes [J]. Journal of Central South University, 2019, 26(5): 1021-1041

[39] MirzaeyanM, ToghraieD. Numerical investigation of laminar heat transfer and nanofluid flow between two porous horizontal concentric cylinders [J]. Journal of Central South University, 2019, 26(7): 1976-1999

[40] HeyhatM M, MousaviS, SiavashiM. Battery thermal management with thermal energy storage composites of PCM, metal foam, fin and nanoparticle [J]. Journal of Energy Storage, 2020, 28: 101235

[41] SiavashiM, TaleshB H R, AminianE. Optimization of heat transfer enhancement and pumping power of a heat exchanger tube using nanofluid with gradient and multi-layered porous foams [J]. Applied Thermal Engineering, 2018, 138465-474

[42] SiavashiM, YousofvandR, RezanejadS. Nanofluid and porous fins effect on natural convection and entropy generation of flow inside a cavity [J]. Advanced Powder Technology, 2018, 29(1): 142-156

[43] PintoR V, AugustoF, FiorelliS. Analysis of behaviour of computational model to evaluate performance of heat pipe containing nanofluids [J]. Journal of Central South University, 2019, 26(5): 1306-1326 2019

[44] ShamshuddinM D, MishraS R, AnwarB O, KadirA. Adomian decomposition method simulation of von Kármán swrling bioconvection nanofluid flow [J]. Journal of Central South University, 2019, 26(10): 2797-2813

[45] AlyK A, El-LathyA R, FouadM A. Enhancement of solidification rate of latent heat thermal energy storage using corrugated fins [J]. Journal of Energy Storage, 2019, 24: 100785

[46] LingW-s, ZhouW, YuW, LiuR-l, HuiK S. Thermal performance of loop heat pipes with smooth and rough porous copper fiber sintered sheets [J]. Energy Conversion and Management, 2017, 153323-334

[47] MaldonadoJ M, deG A, CabezaL F. Systematic review on the use of heat pipes in latent heat thermal energy storage tanks [J]. Journal of Energy Storage, 2020, 32: 101733

[48] JafariM H, BijarchiM A, ShafiiM B. Experimental and numerical investigation of using pulsating heat pipes instead of fins in air-cooled heat exchangers [J]. Energy Conversion and Management, 2019, 181653-662

[49] ShiC-m, WangY, XuC-jun. Experimental study and analysis on heat transfer coefficient of radial heat pipe [J]. Journal of Thermal Science, 2010, 19(5): 425-429

[50] PatelV M, MehtaH B. Thermal performance prediction models for a pulsating heat pipe using artificial neural network (ANN) and regression/correlation analysis (RCA) [J]. Sādhanā, 2018, 43(11): 1-16

[51] deO S, HoferM, NinhKMathematical modeling, numerical simulation and statistical optimization of heat pipe design CAMCOS team michelle fernelius [R], 2006, San Jose, CA, CAMCOS

[52] BodlaK K, MurthyJ Y, GarimellaS V. Evaporation analysis in sintered wick microstructures [J]. International Journal of Heat and Mass Transfer, 2013, 61: 729-741

[53] JiaoA J, MaH B, CritserJ K. Evaporation heat transfer characteristics of a grooved heat pipe with micro-trapezoidal grooves [J]. International Journal of Heat and Mass Transfer, 2007, 50(1516): 2905-2911

[54] JiangL-l, TangY, WuH-y, ZhouW, JiangL-zhen. Fabrication and thermal performance of grooved-sintered wick heat pipe [J]. Journal of Central South University, 2014, 21(2): 668-676

[55] LiX-b, TangY, LiY, ZhouS-z, ZengZ-xin. Sintering technology for micro heat pipe with sintered wick [J]. Journal of Central South University of Technology, 2010, 17(1): 102-109

[56] HuY-x, HuangK-x, HuangJ. A review of boiling heat transfer and heat pipes behaviour with self-rewetting fluids [J]. International Journal of Heat and Mass Transfer, 2018, 121: 107-118

[57] SiavashiM, TaleshB H R, AminianE, SaffariH. Numerical analysis on forced convection enhancement in an annulus using porous ribs and nanoparticle addition to base fluid [J]. Journal of Central South University, 2019, 26(5): 1089-1098

[58] YangL J, YaoT J, TaiY-chong. The marching velocity of the capillary meniscus in a microchannel [J]. Journal of Micromechanics and Microengineering, 2004, 14(2): 220-225

[59] ChengJ, WangG, ZhangY, PiP-h, XuS-ping. Enhancement of capillary and thermal performance of grooved copper heat pipe by gradient wettability surface [J]. International Journal of Heat and Mass Transfer, 2017, 107: 586-591

[60] WuJ-h, TangY, LuL-sheng. Capillary force of a novel skew-grooved wick structure for micro heat pipes [J]. Journal of Central South University of Technology, 2011, 18(6): 2170-2175

[61] DengD-x, TangY, ZengJ, YangS, ShaoH-ran. Characterization of capillary rise dynamics in parallel micro V-grooves [J]. International Journal of Heat and Mass Transfer, 2014, 77: 311-320

[62] HuY-x, ChengJ, ZhangW, ShirakashiR, WangS-feng. Thermal performance enhancement of grooved heat pipes with inner surface treatment [J]. International Journal of Heat and Mass Transfer, 2013, 67: 416-419

[63] KumaresanG, VenkatachalapathyS, AsirvathamL G, WongwisesS. Comparative study on heat transfer characteristics of sintered and mesh wick heat pipes using CuO nanofluids [J]. International Communications in Heat and Mass Transfer, 2014, 57: 208-215

[64] LefèvreF, RullièreR, PandraudG, LallemandM. Prediction of the temperature field in flat plate heat pipes with micro-grooves-Experimental validation [J]. International Journal of Heat and Mass Transfer, 2008, 51(15–16): 4083-4094