Maximum heat transfer capacity of high temperature heat pipe with triangular grooved wick

Abstract

A mathematical model was developed to predict the maximum heat transfer capacity of high temperature heat pipe with triangular grooved wick. The effects of the inclination angle and geometry structure were considered in the proposed model. Maximum heat transfer capacity was also investigated experimentally. The model was validated by comparing with the experimental results. The maximum heat transfer capacity increases with the vapor core radius increasing. Compared with the inclination angle of 0°, the maximum heat transfer capacity increases at the larger inclination angle, and the change with temperature is larger. The performance of heat pipe with triangular grooved wick is greatly influenced by gravity, so it is not recommended to be applied to the dish solar heat pipe receiver.

Keywords

high temperature heat pipe / triangular grooved wick / heat transfer capacity

References

[1] XuH, ZhangH, BaiT, DingL, ZhuangJun. Development and heat transfer analysis of high temperature heat pipe solar receiver [J]. Acta Energiae Solaris Sinica, 2010, 31(12): 1585-1590

[2] BaiT, ZhangH, XuHui. Application of high temperature heat pipe in hypersonic vehicles thermal protection [J]. Journal of Central South University of Technology, 2011, 18(4): 1278-1284

[3] WangC-l, GuoZ-p, ZhangD-l, QiuS-z, TianW-x, WuY-w, SuG-hui. Transient behavior of the sodium-potassium alloy heat pipe in passive residual heat removal system of molten salt reactor [J]. Progress in Nuclear Energy, 2013, 68: 142-152

[4] WangC-l, ZhangD-l, QiuS-z, TianW-x, WuY-w, SuG-hui. Study on the characteristics of the sodium heat pipe in passive residual heat removal system of molten salt reactor [J]. Nuclear Engineering and Design, 2013, 265: 691-700

[5] GuiX-h, TangD-w, LiangS-q, LinB, YuanX-gan. Influence of void ratio on thermal performance of heat pipe receiver [J]. International Journal of Heat and Fluid Flow, 2012, 33(1): 109-117

[6] ShabgardH, BergmanT L, SharifiN, FaghriA. High temperature latent heat thermal energy storage using heat pipes [J]. International Journal of Heat and Mass Transfer, 2010, 53(15/16): 2979-2988

[7] ZhangH, ZhuangJun. Research, development and industrial application of heat pipe technology in China [J]. Applied Thermal Engineering, 2003, 23(9): 1067-1083

[8] ZengM, MaT, SundenB, TrabiaM B, WangQ-wang. Effect of lateral fin profiles on stress performance of internally finned tubes in a high temperature heat exchanger [J]. Applied Thermal Engineering, 2013, 50(1): 886-895

[9] LaubscherR, DobsonR T. Theoretical and experimental modelling of a heat pipe heat exchanger for high temperature nuclear reactor technology [J]. Applied Thermal Engineering, 2013, 61(2): 259-267

[10] TsaiT-e, WuG-w, ChangC-c, ShihW-p, ChenS-li. Dynamic test method for determining the thermal performances of heat pipes [J]. International Journal of Heat and Mass Transfer, 2010, 53(21/22): 4567-4578

[11] HungY M, TioK K. Thermal analysis of optimally designed inclined micro heat pipes with axial solid wall conduction [J]. International Communications in Heat and Mass Transfer, 2012, 39(8): 1146-1153

[12] TaoH-z, ZhangH, ZhuangJun. Progress in the theoretical study on miniature axial grooved heat pipe [J]. Chemical Industry and Engineering Progress, 2010, 29(3): 403-412

[13] KimS J, SeoJ K, DoK H. Analytical and experimental investigation on the operational characteristics and the thermal optimization of a miniature heat pipe with a grooved wick structure [J]. International Journal of Heat and Mass Transfer, 2003, 46(11): 2051-2063

[14] LiT-h, LiJ-d, CaoL-m, XiangL-cheng. Steady-state modelling and experimental investigation of micro heat pipes [J]. Chinese Space Science and Technology, 199722-27

[15] ChenY-p, ZhuW-f, ZhangC-b, ShiM-heng. Thermal characteristics of heat pipe with axially swallow-tailed microgrooves [J]. Chinese Journal of Chemical Engineering, 2010, 18(2): 185-193

[16] ChenY-p, ZhangC-b, ShiM-h, WuJ-f, PetersonG P. Study on flow and heat transfer characteristics of heat pipe with axial “Ω” shaped microgrooves [J]. International Journal of Heat and Mass Transfer, 2009, 52(3/4): 636-643

[17] HungY M, SengQ. Effects of geometric design on thermal performance of star-groove micro-heat pipes [J]. International Journal of Heat and Mass Transfer, 2011, 54(5/6): 1198-1209

[18] ThuchayapongN, NakanoA, SakulchangsatjataiP, TerdtoonP. Effect of capillary pressure on performance of a heat pipe: Numerical approach with FEM [J]. Applied Thermal Engineering, 2012, 32: 93-99

[19] LiJ-d, LiT-han. Two-dimensional modelling and experimental verification for inner flow and heat transfer of heat pipes [J]. Chinese Space Science and Technology, 19979-14

[20] KihmK, KirchoffE, GoldenM, RosenfeldJ, RawalS, PrattD, SwansonA, BilheuxH, WalkerL, VoisinS, HusseyD S, JacobsonD L. Neutron imaging of alkali metal heat pipes [J]. Physics Procedia, 2013, 43: 323-330

[21] BaiTongDevelopment and research of combined wick with high heat transfer performance [D], 2011, Nanjing, Nanjing University of Technology: 41

[22] ZhuS-x, WangZ-qing. A study on flow resistance in the entrance region of isosceles triangular ducts [J]. Applied Mathematics and Mechanics, 1993, 14: 793-807

[23] FaghriA. Performance characteristics of a concentric annular heat pipe. Part II-Vapor flow analysis [J]. ASME Journal of Heat Transfer, 1989, 111: 851-857