便携式蓄冷保温箱结构优化  

Structural optimization of the portable incubator with PCM

作　　者：刘翠娜[1] 张双喜[1] 周恒勤 许冬梅[1] 李美芹[1] 

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033 [2]青岛建设集团股份公司上海分公司,山东青岛266000

出　　处：《吉林化工学院学报》2011年第1期29-33,共5页Journal of Jilin Institute of Chemical Technology

摘　　要：通过对便携式蓄冷保温箱在PCM放冷时的传热情况进行实验跟踪,得出各点的T-t曲线,发现底部冷量损失严重.遂提出保温箱结构的优化方案,并用ANSYS模拟对各方案下保温性能做出理论验证.通过对保温箱各项性能指标与底部聚氨酯发泡层厚度的关系的推导,得出聚氨酯发泡层的增厚在增强保温性能的同时会减少保温箱的有效容积;而真空绝热板与聚氨酯发泡组合而成的复合保温材料可起到在不减少保温箱有效容积的前提下降低箱体冷负荷15.7%的效果.Through experiment-tracking of the heat transfer of the portable incubator during the PCM-melting process,T-t curves of those points are obtained and the loss of refrigeration capacity from bottom is very serious.Thereupon the structural optimization schemes of the incubator is proposed,whose thermal insulation property is verified by ANSYS simulation.By deducing the relationships of various performance of the incubator and the thickness of the bottom foamed layer,it＇s inferred that the thermal insulation property is improved at the cost of effective cubage ratio.While the composite thermal insulation material,which is composed by the vacuum insulation panel and the polyurethane foamed,can decrease 15.7% of the cooling load without reducing effective cubage ratio.

关 键 词：PCM保温箱 真空绝热 结构优化 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TB39[动力工程及工程热物理—热能工程]