Abstract
As a typically highly efficient two-phase heat transfer under cryogenic temperature range, the operation performances of cryogenic loop heat pipes (CLHPs) might be affected by the relative location of different components. A transient mathematical model is established in present work. The model validation is demonstrated by comparing the simulation results with an auxiliary loop type neon-charged CLHP (Ne-CLHP) experiment data, and a good agreement is achieved. The effect of gravity caused by different layout orientations on the Ne-CLHP operation performances are then investigated numerically. There are three operation modes, namely normal LHP mode (n-LHP), gravity-assisted LHP mode (g-LHP), and gravity thermosyphon mode (GTP), according to different layout orientations and heat loads. Under the gravity resistance condition with a positive layout inclination angle, the Ne-CLHP is operated in n-LHP. The operating temperature increases with the positive layout inclination angle, and the heat transport capacity decreases. Under the gravity assistance condition with a negative layout inclination angle, all three operation modes may occur according mainly to the primary heat load. Only the two LHP modes are simulated in the present study, which located in the range between the transition heat load from GTP to g-LHP and the heat transport capacity. The lager negative layout incline angle, the higher transition heat load and the heat transport capacity, while lower operating temperature. In addition, the gravity-independence of cross-sectional two-phase distribution in the transport lines is discussed in the frame of dominant force analysis. The modeling effort will contribute to the technology research and development, as well as the operation control of CLHPs for space and ground applications.
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References
Bai, L., Lin, G., Wen, D.: Parametric analysis of steady-state operation of a CLHP. Appl. Therm. Eng. 30, 850–858 (2010)
Bai, L., Lin, G., Peterson, G., et al.: Modeling and analysis of supercritical startup of a cryogenic loop heat pipe. J. Heat Transf. 133, 12501 (2011)
Bai, L., Lin, G., Zhang, H., et al.: Experimental study of a nitrogen-charged cryogenic loop heat pipe. Cryogenics. 52, 557–563 (2012)
Bai, L., Lin, G., Zhang, H., et al.: Effect of component layout on the operation of a miniature cryogenic loop heat pipe. Int. J. Heat Mass Transf. 60, 61–68 (2013)
Bai, L., Guo, J., Lin, G., et al.: Steady-state modeling and analysis of a loop heat pipe under gravity-assisted operation. Appl. Therm. Eng. 83, 88–97 (2015a)
Bai, L., Zhang, L., Lin, G., et al.: Development of cryogenic loop heat pipes: a review and comparative analysis. Appl. Therm. Eng. 89, 180–191 (2015b)
Brenan, K.E., Campbell, S.L., Petzold, L.R.: Numerical Solution of Initial-Value Problems in Differential Algebraic Equations. SIAM, Philadelphia (1996)
Bugby D., Marland B., Stouffer C., et al. Across-gimbal and miniaturized cryogenic loop heat pipes. Space Technology and Applications International Forum-STAIF, pp. 218–226 (2003)
Bugby, D., Marland, B., Stouffer, C., et al.: Development of advanced tools for cryogenic integration. Adv. Cryog. Eng. 49, 1914–1922 (2004)
Chuang, P.A., Cimbala, J.M., Brenizer, J.S.: Experimental and analytical study of a loop heat pipe at a positive elevation using neutron radiography. Int. J. Therm. Sci. 77, 84–95 (2014)
Du, W.F., Zhao, J.F., Li, K.: Criteria for dominated force regime map in multiphase thermal fluid system. J. Hebei Univ. Water Res. Elec. Eng. 12(1), 1–5 (2018)
Du, W.F., Yue, S.W., Zhao, J.F., et al.: Criteria of gravity-independence in multiphase thermal fluid system. J. Hebei Univ. Water Res. Elec. Eng. (3), 1–7 (2019)
Gully, P., Mo, Q., Yan, T., et al.: Thermal behavior of a cryogenic loop heat pipe for space application. Cryogenics. 51, 420–428 (2011)
Guo, Y., He, J., Lin, G., et al.: Experimental study on the supercritical startup and heat transport capability of a neon-charged cryogenic loop heat pipe. Energy Conversion & Management. 134, 178–187 (2017)
Guo, Y., Lin, G., Bai, L., et al.: Experimental study of the thermal performance of a neon cryogenic loop heat pipe. Int. J. Heat Mass Transf. 120, 1266–1274 (2018a)
Guo, Y., Lin, G., Zhang, H., et al.: Investigation on thermal behaviours of a methane charged cryogenic loop heat pipe. Energy. 157, 516–525 (2018b)
He, F.L., Du, W.F., Zhao, J.F., et al.: Transient numerical simulation on cryogenic loop heat pipe. Manned Spaceflight. 84, 512–519 (2018)
He, J., Guo, Y.D., Zhang, H.X., et al.: Design and experimental investigation of a neon cryogenic loop heat pipe. Heat Mass Transf. 53, 3229–3239 (2017)
Hoang T.T., O'Connell T.A., Khrustalev D.K., et al. Cryogenic advanced loop heat pipe in temperature range of 20–30 K. 12th International Heat Pipe Conference, Moscow, Russia (2002)
Hoang, T.T., O'Connell, T.A., Khrustalev, D.K.: Development of a flexible advanced loop heat pipe for across-gimbal cryocooling. Proc. SPIE. 5172, 68–76 (2003)
Kaya, T., Hoang, T.T.: Mathematical modeling of loop heat pipes and experimental validation. J. Thermophys. Heat Transf. 13, 314–320 (1999)
Kaya, T., Perez, R., Gregori, C., et al.: Numerical simulation of transient operation of loop heat pipes. Appl. Therm. Eng. 28, 967–974 (2008)
Launay, S., Sartre, V., Bonjour, J.: Analytical model for characterization of loop heat pipes. J. Thermophys. Heat Transf. 22, 623–631 (2008)
Nishikawara, M., Nagano, H., Kaya, T.: Transient thermo-fluid modeling of loop heat pipes and experimental validation. J. Thermophy. Heat Transfer. 27, 641–647 (2013)
Nishikawara, M., Ueda, Y., Yanada, H.: Static and dynamic liquid-vapor phase distribution in the capillary evaporator of a loop heat pipe. Microgravity Sci.Technol. 31(1), 61–71 (2019)
Okamoto, A., Miyakita, T., Nagano, H.: On-orbit experiment plan of loop heat pipe and the test results of ground test. Microgravity Sci. Technol. 31, 327–337 (2019)
Qu, Z., Chen, G., Zhou, L., et al.: Numerical study on the operating characteristics of cryogenic loop heat pipes based on a one-dimensional heat leak model. Energy Conv. Manag. 172, 485–496 (2018)
Yun J., Kroliczek E., Crawford L. Development of a cryogenic loop heat pipe (CLHP) for passive optical bench cooling applications. SAE Paper No. 2002-01-2507 (2002)
Zhao J.F., Xie J.C., Lin H., et al. Experimental study on gas/liquid two-phase flow in microgravity. 51st Int. Astronautical Cong., 2–6 October, Rio de Janeiro, Brazil (2000)
Zhao, Y., Yan, T., Liang, J.: Experimental study on a cryogenic loop heat pipe with high heat capacity. Int. J. Heat Mass Transf. 54, 3304–3308 (2011)
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The present study is supported financially by the Key Research Program of Frontier Sciences/CAS under the grant of QYZDY-SSW-JSC040, and the National Natural Science Foundation of China (NSFC) under the grants of 11972040 and 51706020.
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This article belongs to the Topical Collection: Multiphase Fluid Dynamics in Microgravity
Guest Editors: Tatyana P. Lyubimova, Jian-Fu Zhao
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He, FL., Du, WF., Zhao, JF. et al. Numerical Simulation on the Effects of Component Layout Orientation on the Performance of a Neon-Charged Cryogenic Loop Heat Pipe. Microgravity Sci. Technol. 32, 179–188 (2020). https://doi.org/10.1007/s12217-019-09761-3
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DOI: https://doi.org/10.1007/s12217-019-09761-3