摘要
为了探讨不同进气状态下的蓄冰槽释冷特性,通过对蓄冰槽与进风气体的耦合传热过程分析,建立了矩形蓄冰槽内外两侧的二维传热模型,基于CFD软件Fluent对不同进风温度、进风速度的工况进行了数值模拟,得到出风温度和冰的融化率在不同工况下随时间的变化特性。结果表明:进风温度越高,出风温度越高,同时出风温度的降幅越大,进风温度对融冰速率的影响越明显;进风速度越大,出风温度减少量越小,进风速度对融化速率的影响越弱。
In order to discuss the discharge characteristic of ice storage tank in different inlet conditions, through analysis of the ice storage tank and the inlet air coupled heat transfer process, established the rectangular ice storage tank both inside and outside of the tow-dimensional heat transfer model, numerical simulated on different inlet air temperature, wind speed conditions based on CFD software fluent, get out of the outlet air temperature and ice melting rate change characteristic with time in different conditions. The results show that the higher temperature of inlet air, the higher temperature of outlet air, at the same time, the bigger declines of outlet air temperature, the more obvious inlet air temperature effect on the rate of ice melting;that the bigger inlet wind speed,the smaller declines of the outlet air temperature, the weaker effect of inlet wind speed on the rate of ice melting.
出处
《建筑热能通风空调》
2015年第1期52-54,31,共4页
Building Energy & Environment
关键词
凝固融化模型
气固耦合传热
融化速率
solidification and melting model
gas-solid coupling heat transfer
ice melting rate
