Performance evaluation of indirect solar drying system for potato slices: Comparative analysis with open-sun drying method

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy Pub Date : 2024-11-23 DOI:10.1016/j.solener.2024.113114

Ankit Srivastava , Atul Sharma , Anil Kumar

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Abstract

In this study, a partially portable indirect solar dryer (ISD) was constructed and potato slice drying characteristics were analyzed compared to the open-sun drying (OSD) method. Potato slice samples were prepared and the experiment was carried out for two days. Weight reduction environment temperature, collector plate temperature, drying chamber temperature, and drying chamber inlet temperature were recorded from 10 AM to 6 PM. every 30 min to analyze various drying characteristics. Initially moisture content (MC) of the potato slices was 83 ± 2 % (wb); after drying the final MC was 11.7 ± 2 % (wb) for OSD and 7.7 ± 2.0 % (wb) for ISD system, both in 16 h. The highest drying rate (DR) of potato slices was 18.8 (g water/g solid h) after 8 h of open sun drying, and 16.97 (g water/g solid h after) 8 h. Rehydration ratios for OSD and ISD were found 4.32 and 4.20, respectively. Shrinkage factor for OSD was 61 %, whereas ISD had a shrinkage ratio of 70 %. The highest color change values were 6.32 and 8.13 in the ISD and OSD, respectively. Water activity was reduced from 0.95 to 0.42 in ISD and from 0.95 to 0.59 in OSD.

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马铃薯片间接太阳能干燥系统的性能评估：与露天太阳干燥法的比较分析

本研究建造了一个部分便携式间接太阳能干燥器（ISD），并与露天太阳干燥法（OSD）相比分析了马铃薯片的干燥特性。制备了马铃薯片样品，实验进行了两天。从上午 10 点到下午 6 点，每隔 30 分钟记录一次减重环境温度、集热板温度、干燥室温度和干燥室入口温度，以分析各种干燥特性。马铃薯切片的初始含水量（MC）为 83 ± 2 %（湿重）；干燥后，OSD 系统的最终含水量为 11.7 ± 2 %（湿重），ISD 系统的最终含水量为 7.7 ± 2.0 %（湿重），均在 16 小时内完成。露天日晒 8 小时后，马铃薯片的最高干燥速率（DR）为 18.8（克水/克固体小时），8 小时后为 16.97（克水/克固体小时）。OSD 的收缩率为 61%，而 ISD 的收缩率为 70%。ISD 和 OSD 的最高变色值分别为 6.32 和 8.13。水活性在 ISD 中从 0.95 降至 0.42，在 OSD 中从 0.95 降至 0.59。

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来源期刊

Solar Energy 工程技术-能源与燃料

CiteScore

13.90

自引率

9.00%

发文量

审稿时长

47 days

期刊介绍： Solar Energy welcomes manuscripts presenting information not previously published in journals on any aspect of solar energy research, development, application, measurement or policy. The term "solar energy" in this context includes the indirect uses such as wind energy and biomass