Abstract
Solar energy will assist in lowering the price of fossil fuels. The current research is based on a study of a solar dryer with thermal storage that uses water and waste engine oil as the working medium at flow rates of 0.035, 0.045, and 0.065l/s. A parabolic trough collector was used to collect heat, which was then stored in a thermal energy storage device. The system consisted of rectangular boxes containing stearic acid phase change materials with 0.3vol % Al2O3 nanofluids, which stored heat for the waste engine oil medium is 0.33 times that of the water medium at a rate of flow of 0.035l/s which was also higher than the flow rates of 0.045 and 0.065l/s. The parabolic trough reflected solar radiation to the receiver, and the heat was collected in the storage medium before being forced into circulation and transferred to the solar dryer. At a flow rate of 0.035l/s, the energy output of the solar dryer's waste engine oil medium and water was determined to be roughly 12.4, 14, and 15.1, and 9.8, 10.5, and 11.5 times lower than the crops output of groundnut, ginger, and turmeric, respectively. The energy output in the storage tank and the drying of groundnut, ginger, and turmeric crops with water and waste engine oil medium at varied flow rates of 0.035, 0.045, and 0.065l/s were studied. Finally, depending on the findings of the tests, this research could be useful in agriculture, notably in the drying of vegetables.
Highlights
Energy needed for the purposes of cooking is increasing day by day
The findings showed nonlinear heat loss coefficient of the absorber surface (Hayek et al 2011) tested the overall efficiency of the solar collector heat-pipe and the solar collector water-in-glass tube.The heated pipe showed efficiency 15-20% higher than the solar water-in-glass collector. (Medugu 2011) designed and produced an evacuated solar dryer tube for cardamome drying
The measurements were taken for 4 weeks, with atmospheric temperature variations from 28° C
Summary
Energy needed for the purposes of cooking is increasing day by day. LPG, firewood, and other power sources are commonly used as fuel in India. (Asmelash et al 2014) investigated parabolic trough cooker, installed indoor cooking sections while outdoor soya bean oil collector parts energy transfer from the absorber rendered 30 mm of copper pipe into the cooking stove. Its highest temperatures were 1910°C in the mid-absorber loop, 1190°C in the cooker and the system efficiency was found to be 6%. (Wollele and Hassen 2019) deigned a solar cooker 45 minutes to cook 1 kg of rice and its corresponding temperature and power equivalent as 355 K, 421W was absorbed heat from sun energy. When the solar cooker was placed on an insulated tank and filled with water through the bowl. It attained the same water temperature within 40 minutes. It attained the same water temperature within 40 minutes. (De et al 2014)
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