螺旋管式相变蓄冰装置的结构优化  

Structure Optimization of the Spiral-Tube Phase Change Ice Storage Device

作　　者：常明涛[1] 吕静[1] 高强 赵琦昊 沈侃[1] 石明星[1] 

机构地区：[1]上海理工大学,上海200093 [2]福建雪人股份有限公司,福州350200

出　　处：《建筑节能》2017年第5期114-116,152,共4页BUILDING ENERGY EFFICIENCY

摘　　要：对冰蓄冷系统中,螺旋管式蓄冰装置相变蓄冰过程进行研究。采用第三类边界条件建立传热方程式,可以较好地描述相变传热过程。建立可靠的模拟模型,对螺旋管相变蓄冰过程进行数值模拟,模拟结果表明,螺旋管中心容易产生相变死区,蓄冷材料利用率不高;采用螺旋管中间加装直管段的方式进行优化,模拟结果表明,同等蓄冰条件,溶液出口温度同比提高1.5℃;相变蓄冷4 h,结冰质量由9.07 kg同比提高到10.45 kg,相变死区问题得到解决,蓄冷材料利用率提高。综合表明采用加装直管段优化方式具有合理性。In ice storage system, the process of phase change of ice storage device is studied. Heattransfer equation is established by using third kinds of boundary conditions, phase change heat transferprocess can be better described. A reliable simulation model is established to simulate the process of icestorage in helical tube, the simulation results show that the spiral tube center is easy to produce phasechange dead zone, and the utilization ratio of cold storage material is not high. The method of installingstraight pipe in the middle of spiral pipe is optimized, the simulation results show that the outlettemperature increase 1. 5 ℃ under the same ice storage conditions. Following four hours of phase changecold storage, ice quality increased from 9. 07 kg to 10. 45 kg, phase change dead zone problem is solved,and the utilization ratio of cold storage material is improved. The results show that the optimization methodof the straight pipe section is reasonable.

关 键 词：螺旋管 相变蓄冰 结构优化 数值模拟 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]