摘要
研究了一种以中空纤维(涤纶)为保温材料的充气式新型微型保鲜冷库的应用,包括发明库体的结构、优化设计、热工性能检测、控温评价,还验证了该库对红提葡萄的保鲜效果。结果表明,涤纶纤维棉的密度为5.3 kg·m-3;导热系数为0.031W·m-1·K-1;涤纶纤维的吸湿率0.2%;拉伸强度0.37 MPa;断裂伸长率140%;选用阻燃的涤纶纤维不燃烧,阻燃效果好。充气式微型保鲜冷库围护结构的传热系数0.097 W·m-2·K-1,总热阻R总=10.20 m2·K·W-1,达到了国际商业冷库和土建式、拼装式微型冷库的设计标准,且葡萄保鲜效果优于常规土建式微型冷库。
This article studied a new inflatable mini-cold storage by using hollow fibres(dacron)as thermal insulation material. The contents related are inventing library structure,designing optimization,determining thermal insulation properties,and evaluating temperature control,then,analyzing fresh-keeping effect of red globe grape. The results showed that the densityof hollow dacronfibres was 5.3 kg·m-3,thermal conductivity was 0.031 W·m-1·K-1,moisturerate was 0.2%,tensile strength was 0.37 MPa,broken elongation was 140%. In addition,the fire resistance of hollow dacronfibres is very well. The library body of inflatable mini-cold storage possesses specificity,the apparent total heat transfer coefficient of envelop enclosure of the mini-cold storage was 0.097 W·m2·K-1,entire thermal resistance is 10.20 m2·K·W-1(the national standard of entire thermal resistance was 3.0 m2·K·W-1),which reached the designed standard of international commercial mini-cold storage and civil assembled mini-cold storage,and fresh-keeping effect of inflatable mini-cold storage issuperiorto common civil storage.
出处
《天津农业科学》
CAS
2014年第1期21-25,共5页
Tianjin Agricultural Sciences
基金
国家"863"计划项目(2012AA101703)
关键词
微型冷库
充气式库体
纤维保温材料
葡萄保鲜
mini-cold storage
inflatable library structure
fibre thermal insulation material
grape storage