荔枝在不同红外辐射源下真空干燥优化试验  

Optimization Test of Litchi Vacuum Drying under Different Infrared Radiation Sources

作　　者：徐凤英[1] 李长友[1] 陈震[1] 

机构地区：[1]华南农业大学南方农业机械与装备关键技术省部共建教育部重点实验室,广州510642

出　　处：《农业机械学报》2009年第4期147-150,106,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家"863"高技术研究发展计划资助项目(2006AA10Z262);国家星火计划资助项目(2006EA780019);广东省自然科学基金资助项目(845106420100873)

摘　　要：通过不同红外辐射源真空干燥荔枝试验以及干燥工艺品质试验,表明果肉与辐射源光谱匹配显著影响干燥速率,真空度、辐射热流密度的匹配影响干燥速率及干燥品质;采用辐射源SZ、辐射距离120 mm、加热/缓苏时间15 min/15 min、真空度0.02 MPa的干燥工艺,干燥速率与干果品质综合评价最优。Through the experiment of selective infrared radiation and vacuum drying and drying quality for litchi, it is found that the spectrum matching of litchi＇s flesh for radiation source has significant effect on drying rate, and the matching between vacuum and radiation heat flux has effect on drying rate and drying quality. The results show the optimum drying conditions are radiation source SZ, radiation distance 120 mm, heating and tempering time 15 min/15 min and vacuum degree 0.02 MPa respectively.

关 键 词：荔枝 红外辐射源 真空 干燥 光谱匹配 

分 类 号：TQ028.676[化学工程] S667.1[农业科学—果树学]