THERMAL SCIENCE

International Scientific Journal

Muhammad Anwar

,

Hussain Ahmed Tariq

,

Ahmad Adnan Shoukat

,

Hafiz Muhammad Ali

,

Hassan Ali

NUMERICAL STUDY FOR HEAT TRANSFER ENHANCEMENT USING CUO WATER NANOFLUIDS THROUGH MINI-CHANNEL HEAT SINKS FOR MICROPROCESSOR COOLING

ABSTRACT
Water cooled heat sinks are becoming popular due to increased heat generation inside the microprocessor. Timely heat removal from microprocessor is the key factor for better performance and long life. Heat transfer enhancement is reached either by increasing the surface area density and/or by altering the base fluid properties. Nanoparticles emerge as a strong candidate to increase the thermal conductivity of base fluids. In this research, the thermal performance of mini-channel heat sinks for different fin spacing (0.2 mm, 0.5 mm, 1 mm, and 1.5 mm) was investigated numerically using CuO-water nanofluids with volumetric concentration of 1.5%. The numerical values computed were than compared with the literature and a close agreement is achieved. We recorded the minimum base temperature of chip to be 36.8°C for 0.2 mm fin spacing heat sink. A reduction of 9.1% in base temperature was noticed using CuO-water nanofluids for 0.2 mm fin spacing as compared to previously experimental estimated value using water [1]. The drop percentage difference in pressure between water and CuO-water nanofluids was 2.2-13.1% for various fin spacing heat sinks. The percentage difference in thermal resistance between water and CuO-water nanofluids was computed 12.1% at maximum flow rate. We also observed uniform temperature distribution for all heat sinks.
KEYWORDS
thermal management, Heat Transfer Enhancement, nano-fluids
PAPER SUBMITTED: 2018-07-22
PAPER REVISED: 2018-12-07
PAPER ACCEPTED: 2019-01-16
PUBLISHED ONLINE: 2019-02-17
DOI REFERENCE: https://doi.org/10.2298/TSCI180722022A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 5, PAGES [2965 - 2976]
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Numerical study for heat transfer enhancement using CuO water nanofluids through mini-channel heat sinks for microprocessor cooling

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