Analysis reveals how rim angles vary with focal length and diameter in solar concentrators, implying design optimizations.
Energy exists in numerous forms, which include heat, light, and radiation. We aim to optimise solar radiation at low, moderate, and high temperatures. Concentrating collectors, which are also, referred to as focussing collectors, capture direct radiation over a wide area and then focus it onto a small absorber area. Compared to flat-plate collectors, these collectors are more effective in producing high temperatures. The parabolic dish is what we use most often. A focussing receiver deliberately absorbs this concentrated radiation. Parabolic dish solar concentrators have recorded high operating temperatures and high conversion efficiency. The substantial opportunity for employing parabolic dish concentrators in various sectors boosts research and development. Concentrating collectors have been employed as heating technologies in numerous types and constructions in the past few decades. For estimating the intensity of a beam falling on a surface, the beam flux quantity arriving from the sun's axis must be transformed to values that are comparable and related to the surface's normal path. We aim to establish this pattern. The geometry of solar irradiation is one of the necessary factors. Different types of receivers have been studied by changing the depth and width of the parabolic dish collectors, which affects their focal point, how well they concentrate sunlight, and the temperatures they produce. We apply several factors to a parabolic dish to calculate its different rim angles. The focal length and diameter are the parameters. The parabola's diameter and focal length vary. In addition to the amount of solar energy received, the rim angle also affects the process of creating the parabolic dish. As a consequence, the flux dispersal and geometric rearrangement are altered for each scenario. The larger value of the focussing point in the parabolic dish leads to an increase in rim angles. Designing a parabolic collector featuring variable rim angles is the aim of the current research. The investigation examines a range of dish diameters and establishes the focus point to dish diameter ratio for every scenario during the evaluation. We employ extra precautions when choosing the right size for the reflecting materials. To achieve the least amount of deformation and strain while minimising the total mass of the dish, the dimensions of the segments and rings that hold the reflecting surface are increased.
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Jaiswal et al. (2025) studied this question.
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