双U型管束模型换热器的流动和传热特性

doi:10.7527/S1000-6893.2015.0053

Abstract

Abstract:

In order to investigate the flow and heat transfer performances of double U-shaped-tubes modeled heat exchanger, model experiments were conducted in a low-speed high-temperature wind tunnel and numerical calculations were also conducted using Fluent-CFD software. The effects of tube cross-sectional shape and heat exchanger inclined angle on the pressure drop and recuperator effectiveness were obtained. The results show that the internal pressure drop for the elliptic-tube heat exchanger is increased by about 50%-60% relative to the circular-tube heat exchanger at the same averaged flow velocity inside the U-shaped tube. For the external flow, the pressure drop is significantly increased as the increase of heat exchanger inclined angle. At inclined angle of 30°, the pressure drop outside the elliptic-tube heat exchanger is significantly lower than that of the circular-tube heat exchanger with approximately 50% decrease. As the heat exchanger inclined angle increases, the recuperator effectiveness is significantly improved. By comparison with the effect of inclined angle, the tube shape has a weak influence on the recuperator effectiveness. The internal flow entering-gathering mode has moderate effect on the recuperator effectiveness of U-shaped-tubes heat exchanger.

Key words: U-shaped-tubes heat exchanger, inclined angle, tube cross-sectional shape, pressure drop, recuperator effectiveness

CLC Number:

V231.1
O354

LIU Xiyue, ZHANG Jingzhou, LI Gangtuan, KANG Yong. Flow and heat transfer performance of double U-shaped-tubes modeled heat exchanger[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(12): 3832-3842.

References

[1] Kyprianidis K, Gronstedt T, Ogaji S, et al. Assessment of future aero engine designs with intercooled and intercooled recuperated cores[J]. ASME Journal of Engineering for Gas Turbines and Power, 2011, 133(1):011701-1-10.
[2] Andriani R, Gamma F, Ghezzi U. Numerical analysis of intercooled and recuperated turbofan engine[J]. International Journal of Turbo and Jet Engines, 2011, 28(2):139-146.
[3] McDonald C F, Rodgers C. Heat-exchanged propulsion gas turbines:A candidate for future lower SFC and reduced-emission military and civil aero-engines,ASME GT2009-5915[R]. New York:ASME, 2009.
[4] Gong H, Wang Z X, Kang Y, et al. Performance calculation and analysis of intercooled recuperated aero-engine[J]. Journal of Aerospace Power, 2014, 29(6):1453-1461(in Chinese).龚昊,王占学,康涌,等.间冷回热航空发动机性能计算与分析[J].航空动力学报, 2014, 29(6):1453-1461.
[5] Cao M Y, Tang H L, Chen M. Preliminary analysis of thermodynamic cycle of an intercooled recuperated turbofan engine[J]. Journal of Aerospace Power, 2009, 24(11):2465-2470(in Chinese).曹梦源,唐海龙,陈敏.中冷回热航空涡扇发动机热力循环初步分析[J].航空动力学报, 2009, 24(11):2465-2470.
[6] Schoenenborn H, Elbert E, Simon B, et al. Thermo-mechanical design of a heat exchanger for a recuperative aeroengine[J]. ASME Journal of Engineering for Gas Turbine and Power, 2006, 128(11):736-744.
[7] Jeong J H, Kim L S, Lee J K, et al. Review of heat exchanger studied for high-efficiency gas turbines, ASME GT2007-28071[R]. New York:ASME, 2007.
[8] Choi B I, Kim K S,Man Y H, et al. Performance analysis and optimal design of heat exchangers used in high temperature and high pressure system[C]//Proceedings of the ASME Turbo Expo, 2008:501-507.
[9] Min J K, Jeong J H, Ha M Y, et al. High temperature heat exchanger studies for applications to gas turbines[J]. Heat Mass Transfer, 2009, 46(2):175-186.
[10] Doo J H, Ha M Y, Min J K, et al. An investigation of cross-corrugated heat exchanger primary surfaces for advanced intercooled-cycle aero engines (part-I:novel geometry of primary surface)[J]. International Journal of Heat and Mass Transfer, 2012, 55(19-20):5256-5267.
[11] Mandhani V K, Chhabra R P, Eswaran V. Forced convection heat transfer in tube banks in cross flow[J]. Chemical Engineering Science, 2002, 57(3):379-391.
[12] Matos R S, Vargas J V C, Laursen T A, et al. Optimization study and heat transfer comparison of staggered circular and elliptic tubes in forced convection[J]. International Journal of Heat and Mass Transfer, 2001, 44(20):3953-3961.
[13] Matos R S, Laursen T A, Vargas J V C, et al. Three-dimensional optimization of staggered finned circular and elliptic tubes in forced convection[J]. International Journal of Thermal Sciences, 2004, 43(5):477-487.
[14] Wilson L, Narasimhan A, Venkateshan S P. Turbulent flow hydrodynamic experiments in near-compact heat exchanger models with aligned tubes[J]. ASME Journal of Fluids Engineering, 2004, 126(6):990-996.
[15] Choi B I, Kim K S, Ha M Y, et al. Performance analysis and optimal design of heat exchangers used in a high temperature and high pressure system, ASME GT2008-50511[R]. New York:ASME, 2008.
[16] Yakinthos K, Missirlis D, Palikaras A, et al. Optimization of the design of recuperative heat exchangers in the exhaust nozzle of an aero engine[J]. Applied Mathematical Modeling, 2007, 31(11):2524-2541.
[17] Albanakis C, Yakinthos K, Kritikos K, et al. The effect of heat transfer on the pressure drop through a heat exchanger for aero engine applications[J]. Applied Thermal Engineering, 2009, 29(4):634-644.
[18] Kritikos K, Albanakis C, Missirlis D, et al. Investigation of the thermal efficiency of a staggered elliptic-tube heat exchanger for aeroengine applications[J]. Applied Thermal Engineering, 2010, 30(2-3):134-142.
[19] Missirlis D, Yakinthos K, Storm P, et al. Modeling pressure drop of inclined flow through a heat exchanger for aero-engine applications[J]. International Journal of Heat hand Fluid Flow, 2007, 28(3):512-515.
[20] Missirlis D, Donnerhack S, Seite O, et al. Numerical development of a heat transfer and pressure drop porosity model for a heat exchanger for aero engine applications[J]. Applied Thermal Engineering, 2010, 30(11-12):1314-1325.

Flow and heat transfer performance of double U-shaped-tubes modeled heat exchanger

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 4

Recommended Articles

Metrics

Comments

[1]	ZHAO Huan, JIAO Zhongze, SUN Dan, LIU Yongquan, ZHAN Peng, XIN Qi. Numerical and experimental research on interstage pressure drop distribution affecting factors of multi-stage brush seals [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(10): 123544-123544.
[2]	LIU Shuangyan, LI Yulong, XUE Pu, SHI Xiaopeng. Effect of crack parameters and stiffener layout on dynamic stress intensity factor of 3×3 grid stiffened panel at resonance [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(1): 221423-221423.
[3]	ZHANG Baolei, SHANGGUAN Yanqin, WANG Xian, CHEN Gang, LI Yueming. Experimental investigation on shear vortex of jet in cross-flow at low Reynolds number [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(7): 120831-120831.
[4]	LIU Xiyue, ZHANG Jingzhou, LI Gangtuan, KANG Yong. Model experiment on pressure drop and thermal recovery efficiency of tandem double-U-shaped-tube heat exchangers [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(3): 120302-120302.