泡沫金属/翅片填充管蓄热性能的实验研究
|
摘要
为了研究蓄热装置内填充复合相变材料后的蓄热性能,设计了一种填充通孔泡沫金属和环形翅片的圆柱形蓄热罐,搭建了固液相变储热实验系统,并基于此系统对其熔化过程进行了实验研究,记录了相变材料内的实时温度响应数据。研究结果表明:与泡沫金属管相比,泡沫金属/翅片管加速了石蜡的熔化过程,缩短了整体相变时间;在实验工况下,完全熔化时间减少16.7%;然而,翅片的加入虽加速了顶部石蜡的熔化,但会抑制底部石蜡的熔化,使得石蜡内部不同高度间的温差扩大,温度均匀性降低;此外,通过提高流量可以显著增强装置的蓄热响应速度,从而提高最终稳定温度。
This work conducted experimental investigations on the thermal energy storage performance of the shell and tube unit with composite phase change materials(PCM).A cylindrical heat storage tank filled with open-cell metal foam and annular fins was proposed.In order to study the heat transfer enhancement performance,a solid-liquid phase change thermal storage experiment system was set up.Based on the system,the melting process was experimentally studied and the real-time temperature response data in PCM were recorded.The results showed that,compared with metal foam tube,the unit with metal foam/finned tube accelerated the paraffin melting and reduced the overall phase transition time.Under the experimental conditions,the full melting time was decreased by 16.7%.However,the addition of fins accelerated the melting of the top paraffin,but inhibited the melting of the bottom paraffin,which made the temperature disparity among different heights expand and resulted in internal temperature nonuniformity.For foam tube and foam/finned tube,increasing the flow rate can significantly enhance the thermal storage response speed of the unit,and the final stable temperature can be increased.
This work conducted experimental investigations on the thermal energy storage performance of the shell and tube unit with composite phase change materials(PCM).A cylindrical heat storage tank filled with open-cell metal foam and annular fins was proposed.In order to study the heat transfer enhancement performance,a solid-liquid phase change thermal storage experiment system was set up.Based on the system,the melting process was experimentally studied and the real-time temperature response data in PCM were recorded.The results showed that,compared with metal foam tube,the unit with metal foam/finned tube accelerated the paraffin melting and reduced the overall phase transition time.Under the experimental conditions,the full melting time was decreased by 16.7%.However,the addition of fins accelerated the melting of the top paraffin,but inhibited the melting of the bottom paraffin,which made the temperature disparity among different heights expand and resulted in internal temperature nonuniformity.For foam tube and foam/finned tube,increasing the flow rate can significantly enhance the thermal storage response speed of the unit,and the final stable temperature can be increased.
引文
[1]CHUA K J,CHOU S K,YANG W M,et al.Achieving better energy-efficient air conditioning:a review of technologies and strategies[J].Applied Energy,2013,104(4):87-104.
[2]魏高升,邢丽婧,杜小泽,等.太阳能热发电系统相变储热材料选择及研发现状[J].中国电机工程学报,2014,34(3):325-335.WEI Gaosheng,XING Lijing,DU Xiaoze,et al.Research status and selection of phase change thermal energy storage materials for CSP systems[J].Proceedings of the CSEE,2014,34(3):325-335.
[3]孟锋,安青松,郭孝峰,等.蓄热过程强化技术的应用研究进展[J].化工进展,2016,35(5):1273-1282.MENG Feng,AN Qingsong,GUO Xiaofeng,et al.Areview of process intensification technology in thermal energy storage[J].Chemical Industry and Engineering Progress,2016,35(5):1273-1282.
[4]胡锦炎,付星,罗小兵.石蜡/膨胀石墨储热基板的实验研究[J].工程热物理学报,2013,34(8):1511-1514.HU Jinyan,FU Xing,LUO Xiaobing.Experimental study of paraffin/expanded graphite based heat storage substrate[J].Journal of Engineering Thermophysics,2013,34(8):1511-1514.
[5]张正国,王学泽,方晓明.石蜡/膨胀石墨复合相变材料的结构与热性能[J].华南理工大学学报(自然科学版),2006,34(3):1-5.ZHANG Zhengguo,WANG Xueze,FANG Xiaoming.Structure and thermal properties of composite paraffin/expanded graphite phase change material[J].Journal of South China University of Technology(Natural Science Edition),2006,34(3):1-5.
[6]JIANG Zhao,OUYANG Ting,YANG Yang,et al.Thermal conductivity enhancement of phase change materials with form-stable carbon bonded carbon fiber network[J].Materials&Design,2018,143(5):177-184.
[7]宋富强,屈治国,何雅玲,等.低速下空气横掠翅片管换热规律的数值研究[J].西安交通大学学报,2002,36(9):899-902.SONG Fuqiang,QU Zhiguo,HE Yaling,et al.Numerical study on heat transfer of air across finned tube at low speeds[J].Journal of Xi’an Jiaotong University,2002,36(9):899-902.
[8]王杰利,屈治国,李文强,等.封装有相变材料的金属泡沫复合散热器实验研究[J].工程热物理学报,2011,32(2):295-298.WANG Jieli,QU Zhiguo,LI Wenqiang,et al.Experimental study of hybrid heat sink sintered with metal foams filled with phase change materials[J].Journal of Engineering Thermophysics,2011,32(2):295-298.
[9]徐百平,朱冬生,黄晓峰,等.管外翅片强化传热途径与研究进展[J].石油化工设备,2004,33(5):41-44.XU Baiping,ZHU Dongsheng,HUANG Xiaofeng,et al.The measurements and study advances for the heat transfer enhancement of outer fins of tube[J].PetroChemical Equipment,2004,33(5):41-44.
[10]张涛,余建祖.相变装置中填充泡沫金属的传热强化分析[J].制冷学报,2007,28(6):13-17.ZHANG Tao,YU Jianzu.Analysis on thermal conductivity enhancement for PCM embedded in metal foam[J].Journal of Refrigeration,2007,28(6):13-17.
[11]康海军,李娬,李惠珍,等.平直翅片管换热器传热与阻力特性的实验研究[J].西安交通大学学报,1994,28(1):91-98.KANG Haijun,LI Wu,LI Huizhen,et al.Experimental study on heat transfer and pressure drop for plane fin and tube heat exchanger[J].Journal of Xi’an Jiaotong University,1994,28(1):91-98.
[12]YANG X,LU Z,BAI Q,et al.Thermal performance of a shell-and-tube latent heat thermal energy storage unit:role of annular fins[J].Applied Energy,2017,202:558-570.
[13]ZHANG P,XIAO X,MA Z W.A review of the composite phase change materials:fabrication,characterization,mathematical modeling and application to performance enhancement[J].Applied Energy,2016,165:472-510.
[14]白青松,郭增旭,刘亦琳,等.通孔金属泡沫强化蓄冰实验研究[J].西安交通大学学报,2018,52(1):20-25.BAI Qingsong,GUO Zengxu,LIU Yilin,et al.Experimental study on enhanced ice storage in open cell metal foams[J].Journal of Xi’an Jiaotong University,2018,52(1):20-25.
[15]杨肖虎,白佳希,卢天健.通孔金属泡沫渗透率解析模型[J].力学学报,2014,46(6):982-986.YANG Xiaohu,BAI Jiaxi,LU Tianjian.A simplistic analytical model of permeability for open-cell metallic foams[J].Chinese Journal of Theoretical and Applied Mechanics,2014,46(6):982-986.
[16]杨肖虎,邝九杰,白佳希,等.高孔隙率通孔金属泡沫有效导热系数的实验和理论研究[J].西安交通大学学报,2014,48(4):79-84.YANG Xiaohu,KUANG Jiujie,BAI Jiaxi,et al.Experimental and analytic investigations for effective thermal conductivity in high porosity metallic foams[J].Journal of Xi’an Jiaotong University,2014,48(4):79-84.
[17]YANG J,YANG L,XU C,et al.Experimental study on enhancement of thermal energy storage with phasechange material[J].Applied Energy,2016,169:164-176.
[18]马预谱,胡锦炎,陈奇,等.金属材料增强的石蜡储热性能研究[J].工程热物理学报,2016,37(10):2196-2201.MA Yupu,HU Jinyan,CHEN Qi,et al.Study on heat storage performance enhancement of paraffin by metallic material[J].Journal of Engineering Thermophysics,2016,37(10):2196-2201.
[19]CHEN K,GUO L J,XIE X D,et al.Experimental investigation on enhanced thermal performance of staggered tube bundles wrapped with metallic foam[J].International Journal of Heat&Mass Transfer,2018,122:459-468.
[2]魏高升,邢丽婧,杜小泽,等.太阳能热发电系统相变储热材料选择及研发现状[J].中国电机工程学报,2014,34(3):325-335.WEI Gaosheng,XING Lijing,DU Xiaoze,et al.Research status and selection of phase change thermal energy storage materials for CSP systems[J].Proceedings of the CSEE,2014,34(3):325-335.
[3]孟锋,安青松,郭孝峰,等.蓄热过程强化技术的应用研究进展[J].化工进展,2016,35(5):1273-1282.MENG Feng,AN Qingsong,GUO Xiaofeng,et al.Areview of process intensification technology in thermal energy storage[J].Chemical Industry and Engineering Progress,2016,35(5):1273-1282.
[4]胡锦炎,付星,罗小兵.石蜡/膨胀石墨储热基板的实验研究[J].工程热物理学报,2013,34(8):1511-1514.HU Jinyan,FU Xing,LUO Xiaobing.Experimental study of paraffin/expanded graphite based heat storage substrate[J].Journal of Engineering Thermophysics,2013,34(8):1511-1514.
[5]张正国,王学泽,方晓明.石蜡/膨胀石墨复合相变材料的结构与热性能[J].华南理工大学学报(自然科学版),2006,34(3):1-5.ZHANG Zhengguo,WANG Xueze,FANG Xiaoming.Structure and thermal properties of composite paraffin/expanded graphite phase change material[J].Journal of South China University of Technology(Natural Science Edition),2006,34(3):1-5.
[6]JIANG Zhao,OUYANG Ting,YANG Yang,et al.Thermal conductivity enhancement of phase change materials with form-stable carbon bonded carbon fiber network[J].Materials&Design,2018,143(5):177-184.
[7]宋富强,屈治国,何雅玲,等.低速下空气横掠翅片管换热规律的数值研究[J].西安交通大学学报,2002,36(9):899-902.SONG Fuqiang,QU Zhiguo,HE Yaling,et al.Numerical study on heat transfer of air across finned tube at low speeds[J].Journal of Xi’an Jiaotong University,2002,36(9):899-902.
[8]王杰利,屈治国,李文强,等.封装有相变材料的金属泡沫复合散热器实验研究[J].工程热物理学报,2011,32(2):295-298.WANG Jieli,QU Zhiguo,LI Wenqiang,et al.Experimental study of hybrid heat sink sintered with metal foams filled with phase change materials[J].Journal of Engineering Thermophysics,2011,32(2):295-298.
[9]徐百平,朱冬生,黄晓峰,等.管外翅片强化传热途径与研究进展[J].石油化工设备,2004,33(5):41-44.XU Baiping,ZHU Dongsheng,HUANG Xiaofeng,et al.The measurements and study advances for the heat transfer enhancement of outer fins of tube[J].PetroChemical Equipment,2004,33(5):41-44.
[10]张涛,余建祖.相变装置中填充泡沫金属的传热强化分析[J].制冷学报,2007,28(6):13-17.ZHANG Tao,YU Jianzu.Analysis on thermal conductivity enhancement for PCM embedded in metal foam[J].Journal of Refrigeration,2007,28(6):13-17.
[11]康海军,李娬,李惠珍,等.平直翅片管换热器传热与阻力特性的实验研究[J].西安交通大学学报,1994,28(1):91-98.KANG Haijun,LI Wu,LI Huizhen,et al.Experimental study on heat transfer and pressure drop for plane fin and tube heat exchanger[J].Journal of Xi’an Jiaotong University,1994,28(1):91-98.
[12]YANG X,LU Z,BAI Q,et al.Thermal performance of a shell-and-tube latent heat thermal energy storage unit:role of annular fins[J].Applied Energy,2017,202:558-570.
[13]ZHANG P,XIAO X,MA Z W.A review of the composite phase change materials:fabrication,characterization,mathematical modeling and application to performance enhancement[J].Applied Energy,2016,165:472-510.
[14]白青松,郭增旭,刘亦琳,等.通孔金属泡沫强化蓄冰实验研究[J].西安交通大学学报,2018,52(1):20-25.BAI Qingsong,GUO Zengxu,LIU Yilin,et al.Experimental study on enhanced ice storage in open cell metal foams[J].Journal of Xi’an Jiaotong University,2018,52(1):20-25.
[15]杨肖虎,白佳希,卢天健.通孔金属泡沫渗透率解析模型[J].力学学报,2014,46(6):982-986.YANG Xiaohu,BAI Jiaxi,LU Tianjian.A simplistic analytical model of permeability for open-cell metallic foams[J].Chinese Journal of Theoretical and Applied Mechanics,2014,46(6):982-986.
[16]杨肖虎,邝九杰,白佳希,等.高孔隙率通孔金属泡沫有效导热系数的实验和理论研究[J].西安交通大学学报,2014,48(4):79-84.YANG Xiaohu,KUANG Jiujie,BAI Jiaxi,et al.Experimental and analytic investigations for effective thermal conductivity in high porosity metallic foams[J].Journal of Xi’an Jiaotong University,2014,48(4):79-84.
[17]YANG J,YANG L,XU C,et al.Experimental study on enhancement of thermal energy storage with phasechange material[J].Applied Energy,2016,169:164-176.
[18]马预谱,胡锦炎,陈奇,等.金属材料增强的石蜡储热性能研究[J].工程热物理学报,2016,37(10):2196-2201.MA Yupu,HU Jinyan,CHEN Qi,et al.Study on heat storage performance enhancement of paraffin by metallic material[J].Journal of Engineering Thermophysics,2016,37(10):2196-2201.
[19]CHEN K,GUO L J,XIE X D,et al.Experimental investigation on enhanced thermal performance of staggered tube bundles wrapped with metallic foam[J].International Journal of Heat&Mass Transfer,2018,122:459-468.