Abstract
The present study describes a novel idea for thermal performance enhancement of a volumetric absorption solar collector system using a natural extract of Beta Vulgaris, commonly known as beetroot in water as heat transfer fluid (HTF) for the very first time. The optical characterization was carried out using a UV–Vis spectrophotometer, which indicated the absorbance peak around 533 nm showing the full use of the visible spectrum. Outdoor experiments showed a maximum temperature gain of 24.91 °C and the maximum photo-thermal efficiency reached nearly 55.6%, which is about 22.8% higher than base fluid, i.e., water. The use of Beta Vulgaris-based heat transfer fluids significantly increased the thermal efficiency of the system compared to water. The study also suggests that such a heat transfer fluid can be a promising alternative for solar thermal applications, leading to a more sustainable and eco-friendly approach to energy generation.
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Das, S., Kumar, S., Singh, S. (2024). Experimental Investigation of Photo-Thermal Conversion Characteristics of Natural Extract of Beta Vulgaris-Based Heat Transfer Fluids. In: Chandrashekara, C.V., Mathivanan, N.R., Hariharan, K., Jyothiprakash, K.H. (eds) Recent Advances in Thermal Engineering. ISME 2023. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-97-3648-5_18
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