Research Centre of Mathematics, Sri Venkateswara College of Engineering, 602 105, Sriperumbudur, Chennai, India.
Department of Electronics and Communication Engineering, Sriram Engineering College, Perumalpattu, Chennai, Tamil Nadu, 602024, India.
Environ Sci Pollut Res Int. 2023 Feb;30(6):15082-15101. doi: 10.1007/s11356-022-23126-1. Epub 2022 Sep 27.
In this study, the effect of employing ZnO/Acalypha Indica leaf extract (ZAE) on the energy absorption of a coated portable solar cooker has been examined using an experimental setup. A prototypical model has been developed to corroborate in associating an investigative outcome per constituents of the experiments. The studied heat transfer process in ZAE is stable for harsh conditions. The design analysis and an estimation of the system performance were done given various parameters including the pressure of the vacuum envelope, bar plate coating digestion, emissivity, and solar rays. The fabricated solar was tested with and without ZAE to investigate the impact of this coating material on the solar cooker's thermal performance. To observe the performance of the new design, two figures of merit (F and F) have been introduced. The factual food cooking assessments were for a family of four people, which operated in ZAE coating (0.8, 1.0, 1.2 μm) of the solar cooker. The values of F and F for the proposed cooker were obtained as 0.1520 and 0.4235, respectively, which is intact with the BIS values. The results revealed that employing ZAE instead of a thermal NHC-PV solar cooker reduced the time required to boil 2 L of water for about 47 min. The overall thermal energy productivity of the solar cooker with electrical backup was obtained as 42.65%, indicating that the ZAE coating can improve the thermal efficiency by 10.35%.
在这项研究中，采用 ZnO/穿心莲叶提取物（ZAE）对涂层便携式太阳能炊具的能量吸收进行了研究，使用了实验装置。开发了一个原型模型，以关联实验成分的研究结果。研究表明，ZAE 中的传热过程在恶劣条件下是稳定的。对系统性能进行了设计分析和估计，考虑了各种参数，包括真空包的压力、板涂层消化、发射率和太阳光线。对制造的太阳能炊具进行了有无 ZAE 的测试，以研究这种涂层材料对太阳能炊具热性能的影响。为了观察新设计的性能，引入了两个性能指标（F 和 F）。新设计的实际食物烹饪评估是针对四口之家的，在太阳能炊具的 ZAE 涂层（0.8、1.0、1.2 μm）中进行。提出的炊具的 F 和 F 值分别为 0.1520 和 0.4235，与 BIS 值一致。结果表明，采用 ZAE 代替热 NHC-PV 太阳能炊具可以将煮沸 2 升水的时间缩短约 47 分钟。带备用电源的太阳能炊具的总热能生产率为 42.65%，表明 ZAE 涂层可以提高 10.35%的热效率。
