Experimental Study of an Impingement Cooling-Jet Array Using an Infrared Thermography Technique

Schroder, Andrew; Ou, Shichuan; Ghia, Urmila

doi:10.2514/1.60244

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…This paint was applied using screen painting 43T mesh to ensure a uniform thickness. Its relatively high electrical surface resistivity, 50 Ω/Square, allowed to heat the target plate at low potential compared to others [29][30][31]. The electrical current came from an AC power grid with potential regulated with an autotransformer.…”

Section: Methodsmentioning

confidence: 99%

Experimental Air Impingement Crossflow Comparison and Theoretical Application to Photovoltaic Efficiency Improvement

et al. 2020

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The photovoltaic cell temperature is a key factor in solar energy harvesting. Solar radiation raises temperature on the cell, lowering its peak efficiency. Air jet impingement is a high heat transfer rate system and has been previously used to cool the back surface of photovoltaic modules and cells. In this work, an experimental comparison of the cooling performance of two different air jet impingement crossflow schemes was performed. Crossflow is defined as the air mass interacting with a certain jet modifying its movement. This leads to a change in its heat exchange capabilities and is related with the inlet-outlet arrangement of the fluid. In this work, zero and minimum crossflow schemes were compared. The main contribution of this work considered the consumption of the flow supplying devices to determine the most suitable system. The best configuration increased the net power output of the cell by 6.60%. These results show that air impingement cooling can play a role in increasing photovoltaic profitability. In terms of uniformity, on small impingement plates with a low number of nozzles, the advantages expected from the zero crossflow configuration did not stand out.

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Section: Methodsmentioning

confidence: 99%

Experimental Air Impingement Crossflow Comparison and Theoretical Application to Photovoltaic Efficiency Improvement

et al. 2020

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Heat Transfer and Crossflow Investigations for Jet Impingement Cooling Applications

Salem,

Soliman,

Amano

2024

JGPP

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Jet impingement is widely used in different cooling applications. The accumulation of crossflow as the spent air migrates downstream causes a decay in the overall cooling performance. This study aims to mitigate the undesirable crossflow effects by attaching the so-called-crossflow diverters. Cylindrical, rectangular, and ribbed diverter shapes are numerically studied within a 25-jet array for a range of Rej of up to 10,000. Diverter heights of 3 mm (QL), 6 mm (HL), and 9 mm (TQL), as a percentage of jet-to-target spacing (12 mm) are considered with a constant heat flux condition. Results show an increased Nu from 6.6% to 12%. However, the associated friction factor is also increased by 9.9% -24.3% on average compared to the baseline model. Consequently, results show a net enhancement of up to 5.2%, 3.1%, and 3.8% for cylindrical, rectangular, and ribbed-type diverters, respectively according to the heat transfer performance parameter (η).

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Experimental Study of an Impingement Cooling-Jet Array Using an Infrared Thermography Technique

Cited by 2 publications

References 6 publications

Experimental Air Impingement Crossflow Comparison and Theoretical Application to Photovoltaic Efficiency Improvement

Experimental Air Impingement Crossflow Comparison and Theoretical Application to Photovoltaic Efficiency Improvement

Heat Transfer and Crossflow Investigations for Jet Impingement Cooling Applications

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