مجلة الجامعة الإسلامية للعلوم التطبيقية

Experimental Investigation on Vapor Condensation and Removal in a Box Solar Cooker Using a Pressure Cooker Integrated with a Flexible Pipe

Lobna Recioui, Yettou Fatiha, Amor Gama

الكلمات مفتاحية: Solar box cooker; Pressure cooker; Flexible pipe; Thermal performance.

التخصص العام: Engineering

التخصص الدقيق: Renewable Energy Technologies

https://doi.org/10.63070/jesc.2025.039; Received 10 July 2025; Revised 10 November 2025; Accepted 11 December 2025; Available online 24 December 2025.
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الملخص
Solar cookers represent an environmentally friendly and sustainable technology for cooking applications, as they rely on solar energy, a clean, renewable, and widely available resource. This study investigates the effect of vapor condensation on the glass cover of a solar box cooker and its impact on thermal efficiency. Experimental investigations were conducted through controlled stagnation and sensible heat tests under two operating configurations: a conventional simple cooking pot and a pressure cooker equipped with a flexible pipe to vent steam outside the cooker enclosure. Experimental results showed that, when using the simple pot, vapor condensed on the inner surface of the glass cover, leading to reduced solar transmittance, increased thermal losses, and a gradual decrease in absorber plate temperature. In contrast, the pressure cooker configuration successfully discharged steam through the flexible pipe, preventing condensation on the glass surface and maintaining stable absorber temperatures during operation. The thermal performance of the cooker was evaluated using standard figures of merit, which were determined to be 0.11 m²°C/W and 0.427. These findings confirm that mitigating vapor condensation improves thermal performance and demonstrate that integrating a pressure cooker with an external steam-release system enhances solar box cooker efficiency and reliability.
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