多孔布水器蓄冷水槽性能影响因素分析  

The Analysis of Influencing Factor on Performance of Thermal Stratification Tank with Porous Diffuser

作　　者：于凌燕[1] 刘传聚[1] 

机构地区：[1]同济大学,上海200092

出　　处：《能源技术》2009年第1期45-47,50,共4页Energy Technology

摘　　要：自然分层蓄冷水槽中的出流流动是多孔平行射流流动,决定蓄冷效率的因素是布水器的性能及蓄冷水槽的几何因素。首先对布水器的性能进行了分析,通过对单孔出流控制方程组进行数量级分析得到了无因次方程组;对无因次方程组的分析得到了影响布水器出流性能的决定因素是Re数和Fr数,并且指出Re数和Fr数中应选择单孔的几何尺寸作为定型尺寸。进一步对蓄冷水槽出流流动的影响因素进行了分析,指出蓄冷水槽的几何因素对蓄冷效率有影响。Points out that the flows in thermal stratification tank with porous diffuser are multiple parallel jets. The influence factors on the performance of thermal stratification tank are diffuser style and geometry of thermal tank. First obtains dimensionless equations of single orifice through analyzing the order of magnitude of governing equations. Concludes the determining factors on the performance of diffuser axe Re number and Fr number in which the determined length is the length of the single orifice. Further carries on the analysis of influencing factor on performance of thermal stratification tank, Presents that the geometry of tank is influencing factor on performance of thermal stratification tank.

关 键 词：自然分层 多孔布水器 定型尺寸 多孔平行射流 

分 类 号：TB61[一般工业技术—制冷工程]