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<p>Although greenhouse dryers can be used for large-scale drying due to their large size, their low processing temperatures result in prolonged drying times. This study aims to enhance the drying performance of apple slices by integrating a solar absorber plate (SAP) into a greenhouse dryer. An experimental evaluation was conducted at three drying air temperatures (40, 50, and 60°C) in two modes: with and without the SAP. The results demonstrated that increasing the temperature from 40 to 60°C significantly reduced drying time and solar fraction. Additionally, the use of SAP further reduced drying times and solar fraction. Among the tested conditions, the combination of 40°C with the SAP was identified as optimal, offering low specific energy consumption and high solar fraction for effective apple slice drying.</p>

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Experimental analysis of a solar absorber-assisted greenhouse dryer for efficient apple slice drying

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Hamid Mortezapour,
  • Ali Abdi,
  • Mohammad Baqer Payandeh

摘要

Although greenhouse dryers can be used for large-scale drying due to their large size, their low processing temperatures result in prolonged drying times. This study aims to enhance the drying performance of apple slices by integrating a solar absorber plate (SAP) into a greenhouse dryer. An experimental evaluation was conducted at three drying air temperatures (40, 50, and 60°C) in two modes: with and without the SAP. The results demonstrated that increasing the temperature from 40 to 60°C significantly reduced drying time and solar fraction. Additionally, the use of SAP further reduced drying times and solar fraction. Among the tested conditions, the combination of 40°C with the SAP was identified as optimal, offering low specific energy consumption and high solar fraction for effective apple slice drying.