Abstract Thermophysical properties, heat transfer effectiveness, and pumping power assessment of a biologically friendly Diamond-water nanofluid are the most important objectives of the present paper. The samples are prepared by employing the two-step method in six different solid concentrations, and their stability is investigated through zeta potential analysis 14 days after the preparations. Then, the dynamic viscosity and thermal conductivity of the samples are measured in 8 different temperatures. A 25% increase in thermal conductivity has been observed. Applying a curve-fitting method, two new correlations for predicting the dynamic viscosity and thermal conductivity of the nanofluid are proposed. Finally, the effects of diamond nanoparticle on the thermal effectiveness and pumping power of the nanofluid are studied. It is found that the nanofluid would be a suitable heat transfer fluid in a fully developed internal laminar flow regime in all the studied temperatures and solid concentrations.

中文翻译：

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基于热物理特性的金刚石-水纳米流体传热效率和泵送功率评估：实验研究

摘要 生物友好型金刚石-水纳米流体的热物理特性、传热效率和泵送功率评估是本论文最重要的目标。采用两步法制备六种不同固体浓度的样品，制备后14天通过zeta电位分析研究其稳定性。然后，在 8 种不同温度下测量样品的动态粘度和热导率。已经观察到热导率增加了 25%。应用曲线拟合方法，提出了用于预测纳米流体的动态粘度和热导率的两种新的相关性。最后，研究了金刚石纳米颗粒对纳米流体热效率和泵浦功率的影响。