Abstract Hybrid nanofluids are gaining a wide range of applications due to their reported improvement in heat transfer properties. This study presents an experimental investigation into the specific heat and viscosity of Al2O3-ZnO water hybrid nanofluids at three mixture ratios. The specific heat and viscosity measurements are taken over different temperatures at different volume concentrations. The study compared the experimental data to classical models and observed that the specific heat model overestimated and the viscosity model underestimated experimental obtained values. According to results, the particles mixture ratio has a significant effect on both specific heat and viscosity of the hybrid nanofluids. Viscosity increases while specific heat decreases by increasing the volume concentration. Al2O3-ZnO water hybrid nanofluids at 2:1 mixture ratio have a maximum viscosity increase of 96.37% and maximum specific heat decrease of 30.12% at a temperature of 25 °C and volume concentration 1.67%.

中文翻译：

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颗粒混合比对Al2O3-ZnO杂化纳米流体比热容和动态粘度影响的实验研究

摘要 杂化纳米流体由于其传热性能的改善而获得了广泛的应用。本研究对三种混合比的 Al2O3-ZnO 水杂化纳米流体的比热和粘度进行了实验研究。比热和粘度测量是在不同体积浓度下的不同温度下进行的。该研究将实验数据与经典模型进行了比较，并观察到比热模型高估而粘度模型低估了实验获得的值。结果表明，颗粒混合比对混合纳米流体的比热和粘度都有显着影响。通过增加体积浓度，粘度增加而比热降低。2 时的 Al2O3-ZnO 水杂化纳米流体：