Assessment of the Thermo-Hydraulic Efficiency of an Indoor-Designed Jet Impingement Solar Thermal Collector Roughened with Single Discrete Arc-Shaped Ribs: Fid-Bau Portal

Assessment of the Thermo-Hydraulic Efficiency of an Indoor-Designed Jet Impingement Solar Thermal Collector Roughened with Single Discrete Arc-Shaped Ribs

Raj Kumar / Erdem Cuce / Sushil Kumar / Sashank Thapa / Paras Gupta / Bhaskar Goel / C. Ahamed Saleel / Saboor Shaik

Abstract

This study illustrates the impact of single discrete arc-shaped ribs (SDASR)-type artificial roughness on the performance of a jet impingement solar thermal collector (JISTC). The impact of parametric variations of SDASR on the Nusselt number $(N u_{s d r})$ , friction factor $(f_{s d r})$ , and thermohydraulic performance $(η_{s d r})$ is examined. The spacer length ( $S_{s d r}$ ) of the SDASR was changed from 0 mm to 300 mm in stages of 100 mm during the experiment. The fixed parameters of the SDASR were a relative discrete distance $(D_{d} / L_{v})$ of 0.67, relative discrete width $(g_{w} / H_{r})$ of 0.87, relative rib height $(H_{r} / H)$ of 0.047, relative rib pitch $(P_{r} / H)$ of 1.7, angle of an arc $(α_{s d r})$ of 60°, jet diameter ratio $(D_{j} / D_{h y})$ of 0.065, streamwise pitch ratio $(X / D_{h y})$ of 1.72, and spanwise pitch ratio $(Y / D_{h y})$ of 0.82. The Reynolds number $(R e)$ was altered from 3000 to 19,000. The $N u_{s d r}$ and $f_{s d r}$ of a JISTC with a roughened absorber plate was found to be enhanced by 5.25 and 5.98 times as compared to an STC without artificial roughness. The optimal findings of $N u_{s d r}$ , $f_{s d r},$ and $η_{s d r}$ were achieved at $S_{s d r}$ = 0 mm. The maximum value of the $η_{s d r}$ obtained at $S_{s d r}$ = 0 mm was 2.9.

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Assessment of the Thermo-Hydraulic Efficiency of an Indoor-Designed Jet Impingement Solar Thermal Collector Roughened with Single Discrete Arc-Shaped Ribs

Raj Kumar / Erdem Cuce / Sushil Kumar / Sashank Thapa / Paras Gupta / Bhaskar Goel / C. Ahamed Saleel / Saboor Shaik

Abstract

Assessment of the Thermo-Hydraulic Efficiency of an Indoor-Designed Jet Impingement Solar Thermal Collector Roughened with Single Discrete Arc-Shaped Ribs

Raj Kumar / Erdem Cuce / Sushil Kumar / Sashank Thapa / Paras Gupta / Bhaskar Goel / C. Ahamed Saleel / Saboor Shaik

Abstract

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Titel:

Assessment of the Thermo-Hydraulic Efficiency of an Indoor-Designed Jet Impingement Solar Thermal Collector Roughened with Single Discrete Arc-Shaped Ribs

Beteiligte:

Raj Kumar (Autor:in) / Erdem Cuce (Autor:in) / Sushil Kumar (Autor:in) / Sashank Thapa (Autor:in) / Paras Gupta (Autor:in) / Bhaskar Goel (Autor:in) / C. Ahamed Saleel (Autor:in) / Saboor Shaik (Autor:in)