水-相变材料复合蓄热装置的充放热特性研究  

Research on the Thermal Charge and Discharge of Water-Pcm Hybrid Thermal Storage

作　　者：于国清[1] 汤金华[2] 赵惠忠[1] 

机构地区：[1]上海理工大学,上海200093 [2]中国瑞林工程技术有限公司,江西南昌330002

出　　处：《流体机械》2010年第7期59-62,共4页Fluid Machinery

基　　金：上海市科委科技创新行动计划节能减排专项(08DZ1203802);上海市教委重点学科建设项目(J50502)

摘　　要：研究了一种新型的水-相变材料复合蓄热装置,在水箱的上部添加少量相变材料,设置2个均流孔板将水箱分为高温段、低温段和过渡段,并对其蓄热特性进行了试验研究,分析了充热、放热过程中水箱内的温度分布,以及相关因素的影响。试验测试表明:(1)水-相变材料复合水箱在充热和放热过程中,均存在着明显的温度分层;(2)对于充热过程,流量越小,充热温度越稿,分层效果越明显;(3)对于取热过程,相变材料能有效提高较高温度热水的供应量。A water- PCM （Phase Change Material） hybrid thermal storage device was designed and studied and experimentally. Two orifice panels separate the tank into three sections： high temperature section, low temperature section and transitional temperature section. Some factors which affect the characteristic of the water - PCM compound thermal storage during the charging or discharging processes are also analyzed. The results show that： （ 1 ） Significant vertical temperature stratification are observed during charging and discharging processes; （2） Smaller charging flowrate and higher entering water temperature can improve the temperature stratification during charging processes; （3） As to discharging processes, PCM included in the tank can increase the water quantity of higher temperature.

关 键 词：相变蓄热材料 水蓄热 充热特性 放热特性 温度分层 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]