提高太阳能气泡干燥机干燥稻谷的热经济性能和干燥动力学预测

IF 8 Q1 ENERGY & FUELS Energy nexus Pub Date : 2023-09-01 DOI:10.1016/j.nexus.2023.100224
Yogendra Kumar Jyoti , Sanjaya K Dash , Kalpana Rayaguru , Uma Sankar Pal , Nikita Mishra , P.N. Ananth , Suryakanta Khandai
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引用次数: 2

摘要

本文介绍了一种用于农产品干燥的太阳能气泡干燥机(SBD)的开发和性能评价。为了从干燥特性和最终产品经济性方面评估太阳能气泡干燥器的性能,将其与太阳能隧道干燥器(STD)进行了比较。太阳能隧道式干燥机是一种隧道状结构,覆盖在紫外线稳定的聚乙烯板上,以便干燥工业和农业物品。在没有负载的情况下,太阳能气泡干燥机和太阳能隧道式干燥器内部的最高温度分别为56.25和49.30°C。当满载时,干燥器内部的最高温度分别为49.55和33.20°C。对于太阳能气泡式干燥机,平均最终含水量范围为13.07±0.335%至18.74±0.716%(w.b.),而对于太阳能隧道式干燥机,其范围为13.60±0.575%至20.60±0.751%(w.b..)。平均干燥速率也因干燥空气温度和气流模式而异,太阳能气泡干燥器的范围为0.081±0.020至0.006±0.005千克/千克dm-h,太阳能隧道干燥器的范围则为0.056±0.025至0.005±0.002千克/千克。太阳能气泡式干燥机和太阳能隧道式干燥机的热效率分别为58.39%和48.09%,明显高于其他普通太阳式干燥机(36%)。然而,当采用太阳能气泡干燥器时,干燥速率在0.081至0.006克每克干物质每小时蒸发的水和0.014至0.007克太阳能隧道干燥器之间变化。经济分析表明,SBD和STD的回收期分别为3.23年和2.54年。然而,SBD的干燥成本低于STD,分别为每公斤1.51卢比和每公斤1.76卢比。
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Enhancement of thermal and techno-economic performance and prediction of drying kinetics of paddy dried in solar bubble dryer

The development and performance evaluation of a solar Bubble drier (SBD) for drying agricultural produce are presented in this study. In order to evaluate the solar bubble dryer's performance in terms of drying characteristics and end-product economics, it was compared to the solar tunnel dryer (STD). A solar tunnel dryer is a structure with a tunnel-like shape that is covered in UV-stabilized polythene sheet so that industrial and agricultural items can be dried off. While there was no load, the maximum temperatures inside the solar bubble dryer and solar tunnel dryer were 56.25 and 49.30 °C, respectively. When there was a full load, the maximum temperatures inside the dryer were 49.55 and 33.20 °C, respectively. For solar bubble dryers, the average final moisture content ranged from 13.07±0.335 % to 18.74±0.716 % (w.b.), while for solar tunnel dryers, it ranged from 13.60±0.575 % to 20.60±0.751 % (w.b.). The mean drying rate also varied depending on the drying air temperature and air flow mode, ranging from 0.081±0.020 to 0.006±0.005 kg/kg dm-h for solar bubble dryers and 0.056±0.025 to 0.005±0.002 kg/kg dm-h for solar tunnel dryers. The thermal efficiency of the developed dryer was found to be 58.39% for solar bubble dryers and 48.09% for solar tunnel dryers, which are significantly higher than that of other general Sun drying (36%). However, the drying rate varied between 0.081 to 0.006 g of water evaporated per g of dry matter per hour when solar bubble dryer was adopted and 0.014 to 0.007 g for solar tunnel dryer. Economic analysis showed that the SBD and STD had payback periods of 3.23 and 2.54 years, respectively. However, the cost of drying came lower for the SBD than the STD, which were Rs. 1.51 per kg and Rs. 1.76 per kg.

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来源期刊
Energy nexus
Energy nexus Energy (General), Ecological Modelling, Renewable Energy, Sustainability and the Environment, Water Science and Technology, Agricultural and Biological Sciences (General)
CiteScore
7.70
自引率
0.00%
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0
审稿时长
109 days
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