Pressure Drop And Thermal Perfomance Nanofluid Al2O3-WaterOn Radiator Cars

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Abstract

By : Putu Dandi Mandala Saputra

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Faculties : Fakultas Teknik

Department : S1 Teknik Mesin

Since nanofluids have been introduced for the improvement of thermal conductivity, this provides a great hope for the heat transfer field. Research and application of nanofluidics continues to experience growth and improvement. The dispersion of nanoparticles into the base fluid to form a suspense of nanofluids certainly has different thermal conductivity characteristics different from the use of one nanoparticles with other nanoparticles. The presence of nanoparticle addition by the basic fluid certainly gives an effect on the increase in viscosity although the increase in viscosity is not too great. This certainly has an impact on the trend of increasing pressure drop. Increased pressure drop that exceeds the increase of heat transfer is certainly not desired by this. To be able to maintain the performance of nanofluide in a longer time then try to do research on pressure drop and thermal performance of Al2O3-Air nanofluidic on car radiator. Nanofluids are prepared by dispersing an Al2O3 nano particle with a diameter of 20 nm into a water-based fluid. Nanofluid is made with a volume fraction of 0.1%. Thermal performance test of radiator system with Al2O3-Air nanofluidic working quench. The heated nanofluids on the CTB are flowed by pump through the inlet pipe into the radiator, where the flow rate is measured using a flowmeter and precisely on the inlet portion of the radiator is installed a K type thermocouple, as well as on the radiator outlet portion. This test uses 2 pieces of pressure gauge mounted on the inlet and outlet to determine the pressure drop of the working fluid of nanofluid. Temperature data is related to data acquisition. NI 9213 de CdAQ 9174 is then set in this study by using labview software. Addition of Al2O3-Water nanofluids particles to the base fluid can increase pressure drop but not too large. Increased pressure drop generated by Al2O3-Air nanofluids with a mass flow rate of 4 lpm reached 5% while the mass flow rate of 3 lpm reached 3.4% and the mass flow rate of 2 lpm reached 2.5%. Nanofluids Al2O3-Water with a concentration of 0.1% has better thermal properties than the water-based fluid. 3. From the results of this test shows that the application of nanofluids in car radiators is better in improving thermal performance than drop pressure drop.

Keyword : Nano fluid, pressure drop, thermal performance, radiator

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