Experimentation with different alumina hybrid (50:50) suspensions as coolant on plate heat exchanger performance

• Published in: Journal of thermal analysis and calorimetry Vol. 149; no. 11; pp. 5741 - 5754
• Main Author: Bhattad, Atul
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 2024; Springer Nature B.V
• Subjects: Aluminum oxide; Analytical Chemistry; Chemistry; Chemistry and Materials Science; Convective heat transfer; Coolants; Effectiveness; Flow velocity; Fluid flow; Heat exchangers; Heat transfer; Heat transfer coefficients; Inlet temperature; Inorganic Chemistry; Measurement Science and Instrumentation; Nanofluids; Nanoparticles; Performance evaluation; Performance indices; Physical Chemistry; Plate heat exchangers; Polymer Sciences; Effectiveness; Coolant; Heat transfer coefficient; Heat transfer rate; Plate heat exchanger; Hybrid nanofluid
• ISSN: 1388-6150; 1588-2926
• DOI: 10.1007/s10973-024-13101-y

Energy evaluation of the plate heat exchanger is done using Al 2 O 3 mixed hybrid nanofluids as a coolant. The various hybrid nanofluids (AlN–Al 2 O 3 , SiC–Al 2 O 3 , and MgO–Al 2 O 3 ) with equal nanoparticle ratio (5:5) and Al 2 O 3 (10:0) of 0.01% total volume concentration and DI water act as a coolant. The impact of different nanoparticle combinations, flow rate, and inlet temperature on the heat transfer rate, pump work, performance index, heat transfer coefficient, and effectiveness is examined. It is observed that the heat transfer rate, convective heat transfer coefficient, effectiveness, and performance index enhance with an increase in the flow rate and with the addition of nanoparticles. The heat transfer rate and heat transfer coefficient improve the maximum for SiC–Al 2 O 3 hybrid nanofluid to 3.8% and 11.7%, respectively. In contrast, pump work enhances up to 0.25% for Al 2 O 3 (10:0) nanofluid. The effectiveness and performance index improve up to 3.9% for SiC (5:5) hybrid nanofluid. Further, a correlation to estimate the Nusselt number of base fluid has been proposed for the studied cases.