直接蒸发式冰蓄冷空调的蓄冰槽融冰强化换热  

HEAT TRANSFER ENHANCEMENT OF DIRECT-EVAPORATION INTERNAL MELT ICE-ON-COIL THERMAL STORAGE TANK DURING DISCHARGING PROCESS

作　　者：肖睿[1] 何世辉[1] 杜艳利[1] 黄冲[1] 冯自平[1] 国德防[2] 崔昌学[2] 杜光林[2] 

机构地区：[1]中国科学院广州能源研究所中国科学院可再生能源与天然气水合物重点实验室,广东广州510640 [2]青岛海尔空调电子有限公司,山东青岛266101

出　　处：《工程热物理学报》2008年第9期1524-1526,共3页Journal of Engineering Thermophysics

基　　金：国家高技术研究发展计划(863计划)项目(No．2007AA05Z221);广东省科技计划项目(No．2006A10706006)

摘　　要：现有的直接蒸发式冰蓄冷空调蓄冰槽内在融冰运行时都存在不利于传热的较大垂直温差。本文通过在蓄冰槽中下部位置处设置水平交叉盘管,使蓄冰槽内的竖直冰柱易于断裂,从而改善槽内自然对流条件,达到强化换热的目的。实验表明,水平盘管的布置明显减小了蓄冰槽内在融冰过程中的上下层温差,传热过程得到强化,融冰速度加快,制冷系统的COP也相应得到提高。For the current direct-evaporation internal melt ice-on-coil thermal storage systems,the vertical temperature difference in the ice tank is a distinct disadvantage for heat transfer during the discharging process.In this paper,a set of horizontal coils were added to the primary vertical coils near the bottom of the tank to help to crack the cylindrical ice columns easier at the early stage of discharging.The experimental results validated the anticipated effects.The vertical temperature difference is reduce...

关 键 词：直接蒸发 冰蓄冷 蓄冰槽 水平盘管 强化传热 

分 类 号：TB65[一般工业技术—制冷工程]