Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells

Afzal Husain; Mohd Ariz; Nasser A. Al-Azri; Nabeel Z H Al-Rawahi; Mohd Z. Ansari

doi:10.1115/ICNMM2016-7931

Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells

Afzal Husain^*, Mohd Ariz, Nasser A. Al-Azri, Nabeel Z H Al-Rawahi, Mohd Z. Ansari

^*Corresponding author for this work

Mechanical and Industrial Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

The increase in the CPV temperature significantly reduces the efficiency of CPV system. To maintain the CPV temperature under a permissible limit and to utilize the unused heat from the CPVs, an efficient cooling and transportation of coolant is necessary in the system. The present study proposes a new design of hybrid jet impingements/microchannels heat sink with pillars for cooling densely packed PV cells under high concentration. A three-dimensional numerical model was constructed to investigate the thermal performance under steady state, incompressible and laminar flow. A constant heat flux was applied at the base of the substrate to imitate heated CPV surface. The effect of two dimensionless variables, i.e., ratios of standoff (distance from the nozzle exit to impingement surface) to jet diameter and jet pitch to jet diameter was investigated at several flow conditions. The performance of hybrid heat sink was investigated in terms of heat transfer coefficient, pressure-drop, overall thermal resistance and pumping power. The characteristic relationship between the overall thermal resistance and the pumping power was presented which showed an optimum design corresponding to S/Dj = 12 having lower overall thermal resistance and lower pumping power.

Original language	English
Title of host publication	ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting
Publisher	American Society of Mechanical Engineers
ISBN (Electronic)	9780791850343
DOIs	https://doi.org/10.1115/ICNMM2016-7931
Publication status	Published - 2016
Event	ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting - Washington, United States Duration: Jul 10 2016 → Jul 14 2016

Other

Other	ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting
Country/Territory	United States
City	Washington
Period	7/10/16 → 7/14/16

Keywords

Electrical submersible pump
high viscosity
numerical analysis
surface roughness

ASJC Scopus subject areas

Fluid Flow and Transfer Processes
Process Chemistry and Technology
Mechanical Engineering

Access to Document

10.1115/ICNMM2016-7931

Cite this

Husain, A., Ariz, M., Al-Azri, N. A., Al-Rawahi, N. Z. H., & Ansari, M. Z. (2016). Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells. In ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting [7931] American Society of Mechanical Engineers. https://doi.org/10.1115/ICNMM2016-7931

Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells. / Husain, Afzal; Ariz, Mohd; Al-Azri, Nasser A. et al.

ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2016. 7931.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Husain, A, Ariz, M, Al-Azri, NA , Al-Rawahi, NZH & Ansari, MZ 2016, Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells. in ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting., 7931, American Society of Mechanical Engineers, ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting, Washington, United States, 7/10/16. https://doi.org/10.1115/ICNMM2016-7931

Husain A, Ariz M, Al-Azri NA , Al-Rawahi NZH, Ansari MZ. Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells. In ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers. 2016. 7931 https://doi.org/10.1115/ICNMM2016-7931

Husain, Afzal ; Ariz, Mohd ; Al-Azri, Nasser A. et al. / Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells. ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2016, collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2016.

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author = "Afzal Husain and Mohd Ariz and Al-Azri, {Nasser A.} and Al-Rawahi, {Nabeel Z H} and Ansari, {Mohd Z.}",

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AU - Ansari, Mohd Z.

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AB - The increase in the CPV temperature significantly reduces the efficiency of CPV system. To maintain the CPV temperature under a permissible limit and to utilize the unused heat from the CPVs, an efficient cooling and transportation of coolant is necessary in the system. The present study proposes a new design of hybrid jet impingements/microchannels heat sink with pillars for cooling densely packed PV cells under high concentration. A three-dimensional numerical model was constructed to investigate the thermal performance under steady state, incompressible and laminar flow. A constant heat flux was applied at the base of the substrate to imitate heated CPV surface. The effect of two dimensionless variables, i.e., ratios of standoff (distance from the nozzle exit to impingement surface) to jet diameter and jet pitch to jet diameter was investigated at several flow conditions. The performance of hybrid heat sink was investigated in terms of heat transfer coefficient, pressure-drop, overall thermal resistance and pumping power. The characteristic relationship between the overall thermal resistance and the pumping power was presented which showed an optimum design corresponding to S/Dj = 12 having lower overall thermal resistance and lower pumping power.

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Thermal performance analysis of hybrid jet impingement/microchannel cooling for concentrated photovoltaic (CPV) cells

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