CAJ | 학술논문

采用太阳能与西北干燥空气资源合理结合的方式,对苹果切片进行脱水干燥实验研究,对果片厚度、装载量、风速对苹果的干燥速率和生产能力的影响进行试验,得出最佳工艺参数.结果表明,果片厚度和装载量对干燥速率和生产能力均有显著影响,而风速对干燥速率和生产能力影响不显著.采用切片厚度5mm的苹果片,装载量5kg/m~2,风速1.5m/s的太阳能干燥工艺,可以使干燥速率和生产能力的综合效果较好.将500kg的苹果进行太阳能干燥,84h后,得到终水分为15%的干果片44.3kg,成品率为8.8%.与传统热风干燥相比具有明显的节能效果,节能率为69.2%.
채용태양능여서북간조공기자원합리결합적방식,대평과절편진행탈수간조실험연구,대과편후도、장재량、풍속대평과적간조속솔화생산능력적영향진행시험,득출최가공예삼수.결과표명,과편후도화장재량대간조속솔화생산능력균유현저영향,이풍속대간조속솔화생산능력영향불현저.채용절편후도5mm적평과편,장재량5kg/m~2,풍속1.5m/s적태양능간조공예,가이사간조속솔화생산능력적종합효과교호.장500kg적평과진행태양능간조,84h후,득도종수분위15%적간과편44.3kg,성품솔위8.8%.여전통열풍간조상비구유명현적절능효과,절능솔위69.2%.
The drying process of fresh apple slices with solar energy combined with abundant dry air resource in northwest China was investigated.The effects of apple slices thickness and loadage as well as air flow rate on water loss rate in apple sfices were analyzed in single factor experiments.Based on this,the optimal value of three parameters were determined using orthogonal array design for reaching a good compromise between drying rate and productivity.Results indicated that both thickness and loadage of apple slices gave a significant influence on drying rate and productivity,whereas no significant influence of air flow rate was observed.As expected,a good compromise between drying rate and productivity was reached under the optimum drying conditions as follows:apple slice thickness 5 ram,loadage 5 kg/m~2,and air flow rate 1.5 m/s.Totally 44.3 kg of dried apple slices containing 15% water were obtained from 500 kg of fresh ones after 84 hours of drying under such conditions.Compared with conventional hot air drying,this method consumed lower energy with 69.2% reduction.