Experimental energy‐exergy performance and kinetics analyses of compact dual‐mode heat pump drying of food chips,Journal of Food Process Engineering

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Experimental energy‐exergy performance and kinetics analyses of compact dual‐mode heat pump drying of food chips
Journal of Food Process Engineering ( IF 2.7 ) Pub Date : 2020-03-09 , DOI: 10.1111/jfpe.13404
Akhilesh Singh ₁ , Jahar Sarkar ₁ , Rashmi Rekha Sahoo ₁

Affiliation

Batch‐type heat pump dryer operating in both closed and open‐cycle modes with improved tray design is developed to investigate the energetic and exergetic performances, and drying kinetics of banana and potato chips. Effects of drying time on various performances and drying kinetic parameters are presented. Coefficient of performance of heat pump as well as whole system is higher for open‐cycle mode. Higher specific moisture extraction rate is obtained as 1.248 kg/kWh for closed cycle drying of banana chips. Drying efficiency is also found higher for the closed cycle. The specific energy consumption is lower (0.8 kWh/kg) in closed system drying for banana. Total exergy destruction is found higher for the closed system. Mass transfer coefficient and moisture diffusivity are better for the closed system. On the basis of studied performance parameters, the closed system drying is found better than the open system drying in humid and hot ambient conditions.

中文翻译：

紧凑型双模式热泵干燥食品碎片的实验能量-能量性能和动力学分析

开发了具有改进的托盘设计的，在封闭和开放循环模式下运行的间歇式热泵干燥机，以研究香蕉和马铃薯片的能量和能量性能以及干燥动力学。给出了干燥时间对各种性能和干燥动力学参数的影响。对于开放循环模式，热泵以及整个系统的性能系数都更高。对于香蕉片的封闭循环干燥，可获得更高的比湿气提取率，为1.248 kg / kWh。还发现封闭循环的干燥效率更高。在香蕉的密闭系统干燥中，单位能耗较低（0.8 kWh / kg）。发现封闭系统的总火用破坏更高。对于密闭系统，传质系数和水分扩散率更好。

更新日期：2020-03-09

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