摘要
为解决果蔬贮藏保鲜设施运行成本高的问题,促进产地冷藏设施建设,研制了以乙二醇为载冷剂的蓄冷库,并对该库的性能、贮藏保鲜效果和运行成本进行了分析,探讨该冷库用于果品贮藏保鲜的可能性。研究发现乙二醇蓄冷库的平均温度为0.18~0.32℃,测温点间最大温差为0.8℃,好于对照冷藏库。结果说明乙二醇蓄冷库的温度稳定性和均匀性较好,有利于保障果品贮藏品质。乙二醇蓄冷库和对照冷藏库用于贮藏黄冠梨,贮藏效果差异不大。一个贮藏周期一间容量30t的乙二醇蓄冷库,用电量略高于对照冷藏库;但因实行峰谷电价,运行电费仅是对照冷库的75%。总体来说,与对照冷藏库相比,研制的乙二醇蓄冷库性能优良,保鲜效果理想,运行成本更低,是实施峰谷电价地区适宜的果品贮藏保鲜设施。
The cold storage facility exhibited features of energy wasting and higher running cost.In underdeveloped regions that became one of the most important reasons to backward construction of storage and preservation facility of fruit and vegetable.This problem was obstacle for sound development of storage and keeping-fresh industry of fruit and vegetable in China.In order to solve the problem above,and accelerate the construction of cold storage facility in site of production,it would build new energy-saving cold storage facility.The cold storage with ethylene glycol as secondary refrigerant was developed.The newly developed cold storage was composed of 3 circle systems,i.e.compressor refrigeration system,secondary refrigerant cycle system,and cold storage room refrigeration system.The phase-changed material was ethylene glycol,which was widely used in ice-storage air-condition.For exploring possibility of cold storage with ethylene glycol as secondary refrigerant for storage and preservation of fruit,performance,storage and preservation effects,and running cost of the new cold storage were analyzed.To detect performance,temperatures at different sites in the cold storage room and evaporator output draught were measured.Over the period of the experiments,average temperature at 5 test sites of the newly developed freezer is 0.18-0.32℃,while the same index of control cold storage is?0.10-1.00℃.The maximum temperature difference of the newly developed refrigerator among test sites is 0.8℃,less than 1.5℃of control cold storage.Temperature fluctuation range of evaporator output draught of the newly developed cold storage is?0.8-?0.2℃,less than that of control cold storage.All these results indicate that cold storage with ethylene glycol as secondary refrigerant shows preferable temperature stability and uniformity,which is useful to guarantee good storage quality of fruit.To analyze storage and preservation effects,both newly developed freezer and control cold storage were used to store Huangguan pear,and the po
作者
孙静
陈全
王萍
王希卓
孙洁
程勤阳
曹建康
Sun Jing;Chen Quan;Wang Ping;Wang Xizhuo;Sun Jie;Cheng Qinyang;Cao Jiankang(Institute of Agriculture Product Processing Engineering,Chinese Academy of Agricultural Engineering,Beijing 100121,China;Key laboratory of Agro-Products Postharvest Handling,Ministry of Agriculture,Beijing 100121,China;College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100083,China)
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2018年第8期276-282,共7页
Transactions of the Chinese Society of Agricultural Engineering
基金
公益性行业科研专项经费资助项目(201303075)
国家自然基金资助项目(31371846)
关键词
冷库
温度
乙二醇
相变材料
黄冠梨
保鲜
cold storage
temperature
ethylene glycol
phase-changed material
‘Huangguan’pear
preservation
