设计一种真空绝热板(VIPs)与半导体制冷技术相结合的保温箱,为了对比内保温(半导体制冷装置-导温板-VIPs)和外保温(VIPs-半导体制冷装置-导温板)2种设计方案的保温箱内部温度分布均匀性,建立三维模型进行模拟,在同样的条件下进行试验,并测试2～8 ℃的保温时长.结果表明:内保温设计方案保温箱内部温度分布均匀;当半导体制冷装置未启动时,外保温设计方案保温箱内壁面温度差异较大;内保温设计方案优于外保温设计方案,采用内保温设计方案的保温箱内2～8 ℃的最长保温时间为35 h.
Design of insulated container with refrigeration and heating function using vacuum insulation panels
An insulated container combining vacuum insulation panels(VIPs)and sem-iconductor refrigeration technology is designed.In order to compare the uniformity of in-sulated container internal temperature distribution of two design schemes,internal insula-tion(semiconductor-temperature conducting plate-VIPs)and external insulation(VIPs-semiconductor-temperature conducting plate),a three-dimensional model is established for simulation,and then experiments are carried out under the same condition to test the insultation duration in the range of 2-8 ℃.The results show that:the internal tempera-ture distribution of the insulated container with internal insulation design scheme is uni-form;when the semiconductor refrigeration is not started,the temperature difference of the inner wall of the insulated container under the external insulation design scheme is large;the internal insulation design scheme is better than the external insulation design scheme,and the longest insulation time of the insulated container with the internal insula-tion design scheme is 35 h in the range of 2-8 ℃.
万方数据
维普
