Parabolic Dish Type Solar Cooking System with Gravity Based Solar Tracking System

Raturi, Prashant; Deolal, Miss Hemlata; Grover, Jatin; Kumar, Amit

doi:10.9790/1684-11323436

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…Among them, dish solar thermal-power generation systems have the highest solar power-generation efficiency, accounting for approximately 29.4% of the peak solar thermal power generation efficiency worldwide, and have a compact structure, can be easily installed, and show other favorable characteristics, especially in rural or some remote areas, with strong adaptability [ 10 , 11 , 12 ]. In addition to the use of solar energy for power generation, numerous scholars have studied the direct use of solar energy by converting it into thermal energy for cooking and boiling water through concentrators [ 13 , 14 , 15 , 16 ]. Badran et al [ 17 ] designed a portable solar cooker water heater.…”

Section: Introductionmentioning

confidence: 99%

Study of the Phase-Change Thermal-Storage Characteristics of a Solar Collector

Deng¹,

Xu²,

Li³

et al. 2022

Materials

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A combined solar phase-change thermal-storage heating system is proposed, wherein erythritol is used as the phase-change material (PCM) used to fill the thermal-storage device, and the storage cavity is heated and stored with a disc concentrator. The Solidification/Melting, Volume-of-Fluid (VOF) model of ANSYS Fluent software was used to simulate the phase-change process of erythritol inside the thermal-storage device. The thermal-storage device was designed based on our numerical calculations, and its performance was tested. We found that larger PCM-volume fractions correlated with lower PCM volume-expansion rates and longer total melting times during the heat storage process. When the φ value equaled 80%, the PCM solid–liquid-phase interface and temperature distribution were most uniform and showed the best heat storage. In addition, the size of the heat-storage device affected the heat-exchange area, and the total melting time of the PCM decreased and then increased as the width-to-height ratio (I) increased. With this design capacity, the late stage of the charging process of the heat-storage device accounted for 70% of the total time, and the heat energy-utilization rate during the boiling process was 66.3%. Overall, this combined heating system can be considered a very efficient solar energy-utilization terminal for basic domestic energy needs.

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