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Experimental investigation of the thermal performance of a box type solar cooker using a finned cooking vessel
Renewable Energy ( IF 8.7 ) Pub Date : 2021-02-24 , DOI: 10.1016/j.renene.2021.02.130
Elumalai Vengadesan , Ramalingam Senthil

The box type solar cooker is a user-friendly solar energy harvesting system suitable for domestic cooking in tropical countries. The benefit of adding aluminum fins to the lids of the cooking vessels in a solar cooker is investigated in this experimental study. Four different cylindrical aluminum cooking vessels that are un-finned and finned vessels with varying fin lengths of 25 mm, 35 mm, and 45 mm are used to heat water—outdoor experiments are conducted for five days each case. For all four configurations, water is observed to attain a peak temperature of 102 °C in a closed system. The maximum temperature range maintained is between 90 °C and 100 °C for about two to 3 h during outdoor testing. The attained thermal efficiency and heat transfer coefficients are 56.03% and 58.54 W/m2°C, respectively, for the 45 mm finned configuration. The boiling point of water is attained in 2 h and 17 min using the cooking vessel with 45 mm fins. The results of the stagnation and sensible heating tests show that the finned cooking vessels have higher thermal performance than the conventional un-finned vessel due to increased heat transfer surface.



中文翻译:

使用翅片炊具的箱式太阳灶热性能的实验研究

箱式太阳能炊具是一种用户友好的太阳能收集系统,适用于热带国家的家庭烹饪。在此实验研究中,研究了在太阳能炊具的炊具锅盖中添加铝翅片的好处。使用四个不同的圆柱形铝制炊具(未翅片)和翅片长度分别为25 mm,35 mm和45 mm的翅片容器来加热水-每种情况下进行室外实验5天。对于所有四种配置,在封闭系统中,观察到水的峰值温度均达到102°C。在室外测试期间,维持的最高温度范围在90°C和100°C之间约2至3 h。达到的热效率和传热系数分别为56.03%和58.54 W / m 2对于45 mm的翅片配置,分别为°C。使用带有45毫米翅片的烹饪容器,在2小时17分钟内可以达到水的沸点。停滞和显热试验的结果表明,由于增加了传热面积,带翅烹饪容器的热性能比传统的无翅烹饪容器高。

更新日期:2021-03-04
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