摘要
为缩短枸杞干燥周期、节约能耗、提高干燥成品品质,设计一种太阳能-空气源热泵联合干燥系统,并在青海省德令哈枸杞产地实地搭建联合干燥系统,分别对75 kg枸杞进行太阳集热器单独运行、空气源热泵单独运行、集热器与热泵联合运行3种模式下的干燥实验。在相同温度设定下,联合运行耗电量较热泵单独运行节电26.4%,且联合运行单位能耗除湿量比热泵单独运行大36%,联合运行具有明显优势。热泵单独干燥模式平均制热系数为3.47,联合干燥模式平均制热系数可达4.72,且二次回热使联合运行单位能耗除湿量显著提高,可达2.91 kg/kWh。
In order to shorten the drying cycle of Chinese wolfberry,save energy and improve the quality of dried products,a solar assisted heat pump drying system was designed,and the combined drying system was field tested in Delingha,Qinghai Province. The drying process for Lycium barbarum was carried out in three modes:dried by solar collector only,dried by collector and air source heat pump combined system,and dried by stand-alone heat pump. The power consumption of combined system is 26.4% less than that of single operation of heat pump,and the specific moisture extraction rate(SMER)of the combined operation is 36% higher than that of single operation of heat pump,which demonstrates that of the combined operation mode has better performance. The average heating coefficient for single operation mode of heat pump is 3.47,while the combined operation mode reaches 4.72. And the secondary heat recovery significantly improves the SMER of the combined operation, which reaches up to 2.91 kg/kWh.
作者
何伟
储文峰
胡中停
张世超
庾汉成
He Wei;Chu Wenfeng;Hu Zhongting;Zhang Shichao;Yu Hancheng(Department of Building Environment and Equipment,Hefei University of Technology,Hefei 230009,China;Qinghai Vocational College of Architecture,Xining 810000,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2021年第12期59-63,共5页
Acta Energiae Solaris Sinica
基金
安徽省自然科学基金(JZ2019AKZR0248)。
关键词
空气源热泵
干燥
太阳能集热器
枸杞
节能
air source heat pump
drying
solar collector
Chinese wolfberry
energy conservation
