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Abstract The use of a V-corrugated plate absorber in a sun drying system (SDS) under the weather in Baghdad is the subject of this study's original investigation. Analysis of the effects of this novel design is the main goal of the research. To investigate temperature fluctuations inside the drying chamber, experimental tests were run. Initial temperatures for the V-shaped and flat plate designs were 47 °C and 43 °C, respectively, at 8:00 am. At 1:00 pm, when the sun's beams are vertically aligned and the solar radiation reaching the glass collector is at its highest, both arrangements experience temperature peaks. The sun's rays' shifting angles caused temperature drops after this peak, which reached minimums of 47 °C and 41 °C for the V-shaped and flat collector configurations, respectively. It's interesting to note that, compared to the flat plate design, the V-corrugated plate absorber continuously maintained higher temperatures throughout the day. Notably, the absorber showed improvements of 11.6 %, 19.2 %, and 14.6 % at the appropriate times. The study also emphasised the enhanced heat transfer efficiency of the V-shaped absorber, which was attributable to its capacity to withstand greater temperature differences between the input and output. Surprisingly, the V-shaped absorber outperformed efficiency values at 8:00 am and 5:00 pm by 73 % and 82 %, respectively, and reached a maximum thermal efficiency of 71% at 1:00 pm. The investigation focused on a significant 29 % performance differential between the two systems at 1:00 pm, when heat extraction is at its best. This finding highlights the effectiveness of the V-corrugated plate absorber in increasing energy efficiency. The study's findings emphasise the creativity and practicality of V-corrugated plate absorbers in enhancing the efficacy of sun drying systems, particularly in adverse weather situations.
Hasan et al. (Mon,) studied this question.