Minichannel and minigap classification criteria based on the aspect ratio of the minigeometry: A numerical study

Dąbrowski, Paweł; Kumar, Ritunesh

doi:10.1016/j.icheatmasstransfer.2021.105685

Cited by 10 publications

(2 citation statements)

References 40 publications

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“…Using this methodology, the results of the heat transfer calculation related to the minichannel heat sink performed in the Simcenter Star-CCM+ software were described in [20]. Furthermore, when comparing the results with those of other authors who applied rectangular minichannels in heat exchanger construction, it can be noticed that the results are similar in the "hot" minichannel as in works [14,15,[26][27][28][29][30][31][32].…”

Section: Cfd Calculation Resultsmentioning

confidence: 97%

Conception of minichannel cooling for a PVT heat exchanger

Strąk,

Piasecka

2022

EPJ Web Conf.

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In the paper, a new construction of a compact plate heat exchanger dedicated to PVT cooling was numerically tested. The efficiency of photovoltaic panels decreases as their temperature increases, but cooling improves efficiency. A model counter-current heat exchanger with rectangular minichannels was presented. A heated wall of the heat exchanger was a photovoltaic cell. There were laminar flows of Fluorinert FC-72 and distilled water in the minichannels. FC-72 was heated by the photovoltaic panel. The CAD model of a minichannel heat exchanger was proposed. CFD calculations were performed using Simcenter STAR-CCM+ software. The fluid temperature and velocity profile in the minichannels were determined to finally obtain the values of the heat transfer coefficient. The main parameters taken into consideration in the computations concerned: meshes, physics, and geometry. Finally, local heat transfer coefficients were determined.

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Section: Cfd Calculation Resultsmentioning

confidence: 97%

Conception of minichannel cooling for a PVT heat exchanger

Strąk,

Piasecka

2022

EPJ Web Conf.

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“…To verify the model, the results of the numerical calculations should be compared with the known values resulting from the correlation or directly obtained from the experiment. With deviations not exceeding 10%, convergence can be considered good, ensuring the credibility of the simulation [9].…”

Section: Introductionmentioning

confidence: 99%

Simcenter STAR-CCM+ software for CFD and heat transfer calculations in minichannels

Dadas,

Piasecki,

Piasecka

2022

EPJ Web Conf.

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The paper focuses on CFD modelling and numerical simulation of heat transfer during fluid flow in minichannels. The data from the experiment were adopted into Simcenter Star-CCM+ software. The test section comprised seven or twenty-one parallel minichannels of rectangular cross sections. Each minichannel was 1 mm height. During the experimental series, the temperature measurements of the heated wall were recorded due to an infrared camera. Measurement data was compared with the results obtained from numerical calculations. Fluorinert FC-72 was used as a working fluid in experiments and simulations. An increase in the values of the heat transfer coefficient was observed for the test section with 21 minichannels compared to that with seven minichannels. Numerical simulations helped to identify how the change in the number of minichannels affects the intensification of heat transfer during flow without the timeand cost-consuming experimental tests

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