套管式相变蓄热器强化传热研究
|
摘要
蓄热技术可有效解决热能供给与需求在时间和强度上不匹配的矛盾,提高能源利用率。针对蓄热器换热效率低和蓄热器内部温度分布不均匀等问题,结合套管式和多管式蓄热器的换热特性,开发出高效蓄热换热器。研究结果表明,通过添加翅片使相变材料融化过程节省时间66.67%;增加翅片长度能够改善相变材料凝固过程中相变"死区"对整体放热时间的影响,使凝固过程节省时间73%。
Thermal energy storage can improve the efficiency and eliminate the mismatch between the energy supply and energy demand of thermal energy applications. On account of the low thermal efficiency and uneven distribution of internal temperature in the thermal energy storage, combines with the heat transfer characteristics of triple tube and multi-tube heat exchanger, highly efficient thermal energy storage exchanger are developed. The computational results show that the melting time save66.67% by added the fins. The influence of "dead zone" of solidification on the whole solidification time can improve by increasing the fins' length and which can save 73% of the solidification time.
Thermal energy storage can improve the efficiency and eliminate the mismatch between the energy supply and energy demand of thermal energy applications. On account of the low thermal efficiency and uneven distribution of internal temperature in the thermal energy storage, combines with the heat transfer characteristics of triple tube and multi-tube heat exchanger, highly efficient thermal energy storage exchanger are developed. The computational results show that the melting time save66.67% by added the fins. The influence of "dead zone" of solidification on the whole solidification time can improve by increasing the fins' length and which can save 73% of the solidification time.
引文
[1]郭茶秀,魏新利.热能存储技术与应用[M].北京:化学工业出版社,2005[1]Guo Chaxiu,Wei Xinli.Thermal Energy Storage Technology and Application[M].Beijing:Chemical Industry Press,2005.
[2]Nourani M,Hamdami N,Keramat J,et al.Thermal behavior of paraffin-nano-Al2O3stabilized by sodium stearoyl lactylate as a stable phase change material with high thermal conductivity[J].Renewable Energy,2016,88(36):474-482.
[3]Wang Y,Chen Z,Ling X.A molecular dynamics study of nano-encapsulated phase change material slurry[J].Applied Thermal Engineering,2016,98:835-840.
[4]姚元鹏,吴慧英,刘振宇.泡沫铜强化石蜡相变蓄热特性的数值分析[J].热科学与技术,2015,14(2):87-93.[4]Yao Yuanpeng,Wu Huiying,Liu Zhenyu.Numerical study of phase change heat storage enhancement of paraffin using copper foam[J].Journal of Thermal Science and Technology,2015,14(2):87-93.
[5]Esapour M,Hosseini M,Ranjbar A,et al.Phase change in multi-tube heat exchangers[J].Renewable Energy,2016,85:1017-1025.
[6]韩广顺,王培伦,金翼,等.列管式相变蓄热器性能强化的模拟[J].储能科学与技术,2015,4(2):183-188.[6]Han Guangshun,Wang P eilun,Jin Yi,et al.Numerical simulations on performance enhancement of a cross-flow latent thermal energy storage heat exchange[J].Energy Storage Sicence and Technology,2015,4(2):183-188.
[7]Rahimi M,Ranjbar A,Ganji D,et al.Experimental investigation of phase change inside a finned-tube heat exchanger[J].Journal of Engineering,2014,45:1-11.
[8]Rahimi M,Ranjbar A,Ganji D,et al.A nalysis of geometrical and operational parameters of pcm in a fin and tube heat exchanger[J].International Communications in Heat and Mass Transfer,2014,53(4):109-115.
[9]Al-Abidi AA,Mat S,Sopian K,et al.Numerical study of pcm solidification in a triplex tube heat exchanger with internal and external fins[J].International Journal of Heat and Mass Transfer,2013,61(1):684-695.
[10]Al-Abidi AA,Mat S,Sopian K,et al.Internal and external fin heat transfer enhancement technique for latent heat thermal energy storage in triplex tube heat exchangers[J].Applied Thermal Engineering,2013,53(1):147-156.
[11]吴学红,王立勋,李伟平,等.三套管式相变蓄热器强化传热研究[J].热科学与技术,2015,14(2):101-105.[11]Wu Xuehong,Wang Lixun,Li Weiping,et al.Investigation of enhanced heat transfer for triple-sleeve thermal energy storage exchanger using phase change materials[J].Journal of Thermal Sicence and Technology,2015,14(2):101-105.
[12]李永辉,马素霞,谢豪.管翅式相变蓄热器性能的实验研究[J].可再生能源,2014,32(5):574-578.[12]Li Yonghui,Ma Suxia,Xie Hao.Experimental Study on performance of tube-fin phase change storage[J].Renewable Energy Resources,2014,32(5):574-578.
[13]任红霞,孙坤坤,崔海亭,等.组合式高温相变蓄热器蓄热过程的数值模拟[J].可再生能源,2016(1):106-111.[13]Ren Hongxia,Sun Kunkun,Cui Haiting,et al.Numerical simulation of heat storage process of high temperature phase change heat accumulator[J].Renewable Energy Resources,2016(1):106-111.
[2]Nourani M,Hamdami N,Keramat J,et al.Thermal behavior of paraffin-nano-Al2O3stabilized by sodium stearoyl lactylate as a stable phase change material with high thermal conductivity[J].Renewable Energy,2016,88(36):474-482.
[3]Wang Y,Chen Z,Ling X.A molecular dynamics study of nano-encapsulated phase change material slurry[J].Applied Thermal Engineering,2016,98:835-840.
[4]姚元鹏,吴慧英,刘振宇.泡沫铜强化石蜡相变蓄热特性的数值分析[J].热科学与技术,2015,14(2):87-93.[4]Yao Yuanpeng,Wu Huiying,Liu Zhenyu.Numerical study of phase change heat storage enhancement of paraffin using copper foam[J].Journal of Thermal Science and Technology,2015,14(2):87-93.
[5]Esapour M,Hosseini M,Ranjbar A,et al.Phase change in multi-tube heat exchangers[J].Renewable Energy,2016,85:1017-1025.
[6]韩广顺,王培伦,金翼,等.列管式相变蓄热器性能强化的模拟[J].储能科学与技术,2015,4(2):183-188.[6]Han Guangshun,Wang P eilun,Jin Yi,et al.Numerical simulations on performance enhancement of a cross-flow latent thermal energy storage heat exchange[J].Energy Storage Sicence and Technology,2015,4(2):183-188.
[7]Rahimi M,Ranjbar A,Ganji D,et al.Experimental investigation of phase change inside a finned-tube heat exchanger[J].Journal of Engineering,2014,45:1-11.
[8]Rahimi M,Ranjbar A,Ganji D,et al.A nalysis of geometrical and operational parameters of pcm in a fin and tube heat exchanger[J].International Communications in Heat and Mass Transfer,2014,53(4):109-115.
[9]Al-Abidi AA,Mat S,Sopian K,et al.Numerical study of pcm solidification in a triplex tube heat exchanger with internal and external fins[J].International Journal of Heat and Mass Transfer,2013,61(1):684-695.
[10]Al-Abidi AA,Mat S,Sopian K,et al.Internal and external fin heat transfer enhancement technique for latent heat thermal energy storage in triplex tube heat exchangers[J].Applied Thermal Engineering,2013,53(1):147-156.
[11]吴学红,王立勋,李伟平,等.三套管式相变蓄热器强化传热研究[J].热科学与技术,2015,14(2):101-105.[11]Wu Xuehong,Wang Lixun,Li Weiping,et al.Investigation of enhanced heat transfer for triple-sleeve thermal energy storage exchanger using phase change materials[J].Journal of Thermal Sicence and Technology,2015,14(2):101-105.
[12]李永辉,马素霞,谢豪.管翅式相变蓄热器性能的实验研究[J].可再生能源,2014,32(5):574-578.[12]Li Yonghui,Ma Suxia,Xie Hao.Experimental Study on performance of tube-fin phase change storage[J].Renewable Energy Resources,2014,32(5):574-578.
[13]任红霞,孙坤坤,崔海亭,等.组合式高温相变蓄热器蓄热过程的数值模拟[J].可再生能源,2016(1):106-111.[13]Ren Hongxia,Sun Kunkun,Cui Haiting,et al.Numerical simulation of heat storage process of high temperature phase change heat accumulator[J].Renewable Energy Resources,2016(1):106-111.