Experimental study of chilled water by using aluminum (Al) Nanofluid

Luay Hashem Abbud†, Ammar F. Abdulwahid‡, Ali Salh sawadi‡†, Hyder H. Balla‡†, Riyad Jassim Tilefih‡†, Zaid Sttar Karim††

†Department of Air conditioning and Refrigeration Technical Engineering, Al – Mustaqbal University College, Babylon, Iraq, Department of Mechanical engineering, University of Kufa, Najaf, Iraq

‡Department of Aeronautics Technical, Al-Furat Al-Awsat Technical University, Technical Institute of Najaf, Iraq

‡†Al-Furat Al-Awsat Technical University, Technical Institute of Najaf, Iraq

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The project study of experimental work the chiller water was carried out using a nano-fluid aluminum (Al) with ethylene glycol (EG) with different concentrations (0.02, 0.04, 0.06, 0.08, and 0.1 %) to enhancement the performance and efficiency of the chiller water system and the thermal conductivity. Therefore, the most important point to know is its thermal conductivity. The study focus of this work is on nanofluids including aluminum of 10 nm nanoparticles. Thermal conductivity was measured at room temperature. The specific objectives are the determination of the influence of volume fraction, ultrasonic time, concentration, on the thermal conductivity of nanofluid (Al/EG). The results of the thermal conductivity measurement show the best interval time of sonicated which was 6 hours in comparison with the other interval times. The result shows that the thermal conductivity of different concentrations of nanoaluminum (Al) with base fluid ethylene glycol (EG) have increase linearly with increment of concentration of nanoaluminum (Al) in base fluid. The volume fraction concentration of the nanoaluminum (Al) with ethylene glycol (EG) increases with increase in the coefficient of performance COP and compared with ethylene glycol (EG) gives value enhancement very good 29% when addition nanoparticles. The temperature of the entering nanofluid increases with the increase of the coefficient of performance. .