Browsing by Author "Mahbubul, I.M."

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Citation - WoS: 173
Citation - Scopus: 206
An experimental investigation of heat transfer enhancement of a minichannel heat sink using Al2O3-H2O nanofluid
(Elsevier Ltd, 2014) M. R. Sohel; S. S. Khaleduzzaman; Rahman Saidur; A. Hepbasli; Mohd Faizul Mohd Sabri; Islam Mohammed Mahbubul; Sabri, M.F.M.; Sohel, M.R.; Khaleduzzaman, S.S.; Mahbubul, I.M.; Hepbasli, A.; Saidur, R.
The thermal performances of a minichannel heat sink are experimentally investigated for cooling of electronics using nanofluid coolant instead of pure water. The Al2O3-H2O nanofluid including the volume fraction ranging from 0.10 to 0.25 vol.% was used as a coolant. The effects of different flow rates of the coolant on the overall thermal performances are also investigated. The flow rate was ranged from 0.50 to 1.25 L/min as well as the Reynolds number from 395 to 989. The coolant was passed through a custom made copper minichannel heat sink consisting of the channel height of 0.8 mm and the channel width of 0.5 mm. The experimental results showed the higher improvement of the thermal performances using nanofluid instead of pure distilled water. The heat transfer coefficient was found to be enhanced up to 18% successfully. The nanofluid significantly lowered the heat sink base temperature (about 2.7 °C) while it also showed 15.72% less thermal resistance at 0.25 vol.% and higher Reynolds number compared to the distilled water. © 2014 Elsevier Ltd. All rights reserved. © 2014 Elsevier B.V. All rights reserved.
Citation - WoS: 149
Citation - Scopus: 168
Heat transfer performance and exergy analyses of a corrugated plate heat exchanger using metal oxide nanofluids
(Elsevier Ltd, 2014) M. A. Khairul; Mohammad A. Alim; Islam Mohammed Mahbubul; Rahman Saidur; A. Hepbasli; Altab Hossain; Khairul, M.A.; Alim, M.A.; Mahbubul, I.M.; Hossain, A.; Hepbasli, A.; Saidur, R.
Heat exchangers have been widely used for efficient heat transfer from one medium to another. Nanofluids are potential coolants which can afford excellent thermal performance in heat exchangers. This study examined the effects of water and CuO/water nanofluids (as coolants) on heat transfer coefficient heat transfer rate frictional loss pressure drop pumping power and exergy destruction in the corrugated plate heat exchanger. The heat transfer coefficient of CuO/water nanofluids increased about 18.50 to 27.20%with the enhancement of nanoparticles volume concentration from 0.50 to 1.50% compared to water. Moreover improvement in heat transfer rate was observed for nanofluids. On the other hand exergy loss was reduced by 24% employing nanofluids as a heat transfermediumwith comparing to conventional fluid. Besides 34% higher exergetic heat transfer effectiveness was found for 1.5 vol.% of nanoparticles. It has a small penalty in the pumping power. Hence the plate heat exchanger performance can be improved by adapting the working fluid with CuO/water nanofluids. © 2013 Elsevier Ltd. © 2017 Elsevier B.V. All rights reserved.