脉动热管相变蓄热器放热性能实验分析
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摘要
为解决能源利用浪费大、效率低、环境污染严重的问题,设计了一套脉动热管型相变蓄放热装置,搭建了实验台,考察了冷却水初始温度、冷却水流量和抽真空充液对脉动热管放热过程的影响,并计算了不同工况下脉动热管蓄热装置的热回收率。结果表明:冷却水初始温度越高,装置放热时间越长,水槽内冷却水最终温度也越高;冷却水流量越大,放热时间越短,但当冷却水流量增大至一定值时,总放热时间几乎不再变化;脉动热管是否抽真空充液对装置的放热性能影响不大;装置的热回收率随着冷却水初始温度的升高而降低,随着冷却水流量的增大仅有小幅增加。
To solve the problems of energy waste,low efficiency and serious environmental pollution,a pulsating heat pipe type phase change storage device was designed and a test bench was set up.The effects of initial cooling water temperature,cooling water flow rate and evacuation filling on the exothermic process of pulsating heat pipe were investigated.The heat recovery rate of pulsating heat pipe heat storage device under different operating conditions was calculated.The results show that,the higher the initial temperature of the cooling water,the longer the heat dissipation time of the device is,and the higher the final temperature of the cooling water in the water tank is.The greater the cooling water flow,the shorter the heat release time,but when the cooling water flow increases to a certain value,the total heat release time almost has no change.Whether the pulsating heat pipe is vacuumed has little effect on the exothermic performance of the device.The heat recovery rate of the device decreases with the increase of the initial temperature of the cooling water and only slightly increases with the the cooling water flow rate.
To solve the problems of energy waste,low efficiency and serious environmental pollution,a pulsating heat pipe type phase change storage device was designed and a test bench was set up.The effects of initial cooling water temperature,cooling water flow rate and evacuation filling on the exothermic process of pulsating heat pipe were investigated.The heat recovery rate of pulsating heat pipe heat storage device under different operating conditions was calculated.The results show that,the higher the initial temperature of the cooling water,the longer the heat dissipation time of the device is,and the higher the final temperature of the cooling water in the water tank is.The greater the cooling water flow,the shorter the heat release time,but when the cooling water flow increases to a certain value,the total heat release time almost has no change.Whether the pulsating heat pipe is vacuumed has little effect on the exothermic performance of the device.The heat recovery rate of the device decreases with the increase of the initial temperature of the cooling water and only slightly increases with the the cooling water flow rate.
引文
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[25]罗孝学,章学来,华维三,等.一种脉动热管相变蓄放热试验装置的设计[J].流体机械,2017,45(4):63-67.LUO Xiaoxue,ZHANG Xuelai,HUA Weisan,et al.Design of pulsating heat pipe type phase change thermal storage experimental device[J].Fluid Machinery,2017,45(4):63-67.
[2]王征.中国能源消费面临的严峻形势和存在的主要问题[J].经济研究参考,2015(24):38.WANG Zheng.The main problems existing in China’s energy consumption[J].Review of Economic Research,2015(24):38.
[3]MOHAMMED M F,AMAR M K,SIDDIQUE A K,et a1.A review on phase change energy storage:materials and applications[J].2004,45(9/10):1597-1615.
[4]赫永达,刘智超,孙巍.资本替代能源的节能减排效应研究[J].产业经济研究,2017(1):114-126.HE Yongda,LIU Zhichao,SUN Wei.Effects of substituting energy with capital on China’s energy conservation and emission reduction[J].Industrial Economics Research,2017(1):114-126.
[5]WANG W L,HU Y K,YAN J Y,et a1.Combined heat and power plant integrated with mobilized thermal energy storage(M-TES)system[J].Frontiers of Energy and Power Engineering in China,2010,4(4):469-474.
[6]李炳宏.中国经济发展产生的能源和环境效应研究[J].环境科学与管理,2017,42(3):157-160.LI Binghong.Energy and environmental effects of Chinese economic development[J].Environmental Science and Management,2017,42(3):157-160.
[7]AHMET K HAKAN F O,TANSEL K.Energy and exergy analysis of a latent heat storage system with phase change material for a solar collector[J].Renewable Energy,2008,33:567-574.
[8]邹得球,马先锋,刘小诗,等.石墨烯在相变材料中的研究进展[J].化工进展,2017,36(5):1743-1754.ZOU Deqiu,MA Xianfeng,LIU Xiaoshi,et al.Research progress on graphene in phase change materials[J].Chemical Industry and Engineering Progress,2017,36(5):1743-1754.
[9]王会春,凌子夜,方晓明,等.六水氯化镁相变储热材料的研究进展[J].储能科学与技术,2017,6(2):204-212.WANG Huichun,LING Ziye,FANG Xiaoming,et al.Recent progress in the use of magnesium chloride hexahydrate used as a phase change material[J].Energy Storage Science and Technology,2017,6(2):204-212.
[10]黄欣鹏,唐超权,施娟,等.泡沫铝和石蜡复合相变材料的传热特性分析[J].东南大学学报(自然科学版),2017,47(1):73-78.HUANG Xinpeng,TANG Chaoquan,SHI Juan,et al.Heat transfer characteristics on composite phase change materials filled with foamed aluminum and paraffin wax[J].Journal of Southeast University(Natural Science Edition),2017,47(1):73-78.
[11]MAYDANIK Y F,DMITRIN V I,PASTUKH V G.Compact cooler for electronics on the basis of a pulsating heat pipe[J].Applied Thermal Engineering,2009,29(17):3511-3517.
[12]左志远,李熙亚.熔融盐斜温层混合蓄热单罐系统及实验研究[J].化工进展,2007,26(7):1018-1022.ZUO Zhiyuan,LI Xiya.Scheme and experiments of a molten-salt hybrid thermocline thermal storage system[J].Chemical Industry and Engineering Progress,2007,26(7):1018-1022.
[13]MARKO M.Loose-tight-loose twist,twisted-tape insert solar central receiver:US 5850831 A[P].1998-12-22.
[14]陈俊.相变蓄热技术的数值模拟研究[D].郑州:郑州大学,2007:39.CHEN Jun.Numerical simulation of phase change thermal storage technology[D].Zhengzhou:Zhengzhou University,2007:39.
[15]AKACHI H.Looped Capillary Heat Pipe:No.Hei6-97147[P].1994.
[16]AKACHI H.Structure of micro-heat pipe:US5219020[P].1993.
[17]罗孝学,章学来,华维三,等.脉动热管相变蓄热器蓄热实验分析[J].化工学报,2017,68(7):2722-2729.LUO Xiaoxue,ZHANG Xuelai,HUA Weisan,et al.Experimental analysis on heat storage of pulsating heat pipe phase change heat accumulator[J].Journal of Chemical Industry and Engineering(China),2017,68(7):2722-2729.
[18]刘聪,闫春杰,孙述泽,等.低温脉动热管的发展现状及展望[J].真空与低温,2017,23(3):131-135.LIU Cong,YAN Chunjie,SUN Shuze,et al.Development status and prospect of low temperature pulsating heat pipe[J].Vacuum and Cryogenics,2017,23(3):131-135.
[19]王盼,王迅.脉动热管强化传热的研究进展[J].现代化工,2017,37(7):40-44.WANG Pan,WANG Xun.Review on enhanced heat transfer for pulsating heat pipe[J].Modern Chemical Industry,2017,37(7):40-44.
[20]KHANDEKAR S.Thermofluid dynamic study of flatplate closed-loop pulsating heat pipes[J].Microscale Thermophysical Engineering,2003,6(4):303-317.
[21]LEE W H,JUNG H S,KIM H,et al.Flow visualization of oscillating tube heat pipe[C]//Proceedings of the 1lth International Heat Pipe Conference.Tokyo,Japan,1999,2:131-136.
[22]罗孝学,章学来,华维三,等.应用于相变蓄热的脉动热管换热器在不同倾角下放热性能的试验研究[J].流体机械,2017,45(7):62-67.LUO Xiaoxue,ZHANG Xuelai,HUA Weisan,et al.Experimental study on heat transfer performance of pulsating heat pipe heat exchanger with phase change heat storage at different inclination[J].Fluid Machinery,2017,45(7):62-67.
[23]盛强,邢玉明.Ba(OH)2·8H2O/泡沫铜相变复合材料的制备及传热性能[J].复合材料学报,2014,31(6):1566-1572.SHENG Qiang,XING Yuming.Preparation and heat transfer performance of Ba(OH)2·8H2O/copper foam phase change composites[J].Acta Materiae Compositae Sinica,2014,31(6):1566-1572.
[24]杨世铭,陶文铨.传热学[M].4版.北京:高等教育出版社,2006:260-261.YANG Shiming,TAO Wenquan.Heat transfer[M].4th ed.Beijing:Higher Education Press,2006:260-261.
[25]罗孝学,章学来,华维三,等.一种脉动热管相变蓄放热试验装置的设计[J].流体机械,2017,45(4):63-67.LUO Xiaoxue,ZHANG Xuelai,HUA Weisan,et al.Design of pulsating heat pipe type phase change thermal storage experimental device[J].Fluid Machinery,2017,45(4):63-67.