利用天然白云石粉末嵌入潜热储能装置和空气-空气热回收系统提高温室干燥机的性能

IF 6 2区 工程技术 Q2 ENERGY & FUELS Solar Energy Pub Date : 2023-09-15 DOI:10.1016/j.solener.2023.111881
Fatih Selimefendigil , Ceylin Şirin
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引用次数: 3

摘要

温室干燥系统(gds)属于直接式太阳能干燥机,由于其适用性强、产品干燥能力强和成本效益高而得到广泛应用。本研究旨在利用天然白云石粉埋入潜热蓄热装置(LHTESU)和空对空热回收系统(HRS)改善GDS的干燥性能。在这种情况下,设计和制造了三种不同类型的GDS,包括石蜡基LHTESU的GDS、天然白云石粉包埋LHTESU的GDS和天然白云石粉包埋LHTESU的hrs辅助GDS。在相同的环境条件下,对设计和制造的gds进行了实验分析。实验结果表明,HRS和白云石粉在LHTESU中的联合使用可使干燥时间缩短约36.36%。此外,在使用天然白云石嵌入的LHTESU和HRS的系统中,最高瞬时出口空气温度达到51.4 °C。与基本情况(系统只含有石蜡基LHTESU)相比,采用上述改性后的GDS的火用效率提高了46.21%。此外,所分析的gds的比水分提取率在0.96 ~ 1.52 kg.kWh−1之间。
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Enhancing the performance of a greenhouse dryer with natural dolomite powder-embedded latent heat thermal energy storage unit and air-to-air heat recovery system

Greenhouse drying systems (GDSs) are grouped in direct-type solar dryers and are widely utilised because of their easy applicability, high product drying capacity and cost-effectiveness. In the present work, it is aimed to improve the drying performance of a GDS by using natural dolomite powder-embedded latent heat thermal energy storage unit (LHTESU) and air-to-air heat recovery system (HRS). In this context, three different types of GDSs have been designed and manufactured including a GDS with paraffin-based LHTESU, a GDS with natural dolomite powder-embedded LHTESU and a HRS-assisted GDS with natural dolomite powder-embedded LHTESU. Designed and manufactured GDSs have been experimentally analysed under the same environmental conditions. According to the experimentally achieved findings, combined utilisation of HRS and dolomite powder in the LHTESU reduced the drying time approximately as 36.36%. Moreover, highest instantaneous outlet air temperature was achieved as 51.4 °C in the system that used natural dolomite-embedded LHTESU and HRS. The exergetic efficiency of the GDS was upgraded as 46.21% by using the mentioned modifications in comparison to the base case (the system contains only paraffin-based LHTESU). In addition, specific moisture extraction rate for the analysed GDSs was attained between 0.96 and 1.52 kg.kWh−1.

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来源期刊
Solar Energy
Solar Energy 工程技术-能源与燃料
CiteScore
13.90
自引率
9.00%
发文量
0
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
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