In grinding, the convective heat transfer coefficient (CHTC) determines the heat transfer ratio and the grinding temperature, and it indirectly identifies the surface integrity. No effective method for calculating CHTC is available for aerosol cooling, and it still lacks the measuring equipment that accords with the actual condition of aerosol cooling. On this basis, the atomization mechanism of nanofluid aerosol cooling (NAC) was studied, the influence of jet parameters on the spray boundary was revealed, and the probability density of droplet size in the grinding zone was statistically analyzed. A theoretical model for the CHTC of NAC was developed on the basis of the analysis of the heat transfer coefficient of a single nanofluid droplet. Furthermore, a new method for measuring the CHTC of aerosol cooling was proposed, and the measuring equipment was designed and built. The measurement error of the measurement system was calculated, and results showed that the measurement error of the new measuring equipment is 0.044 (10⁻² W/mm²·K). Nanofluids were prepared by using medical nanoparticles and normal saline, and the CHTC was calculated and measured. The results showed that the theoretical model error is 7.26%, which verifies the correctness of the theoretical model.

在磨削中，对流传热系数（CHTC）决定了传热比和磨削温度，并间接确定了表面完整性。气溶胶冷却没有有效的计算CHTC的方法，它仍然缺少符合气溶胶冷却实际条件的测量设备。在此基础上，研究了纳米流体气溶胶冷却（NAC）的雾化机理，揭示了射流参数对喷雾边界的影响，并统计分析了研磨区液滴尺寸的概率密度。在分析单个纳米流体液滴的传热系数的基础上，建立了NAC CHTC的理论模型。此外，提出了一种测量气溶胶冷却CHTC的新方法，测量设备的设计和制造。计算得出测量系统的测量误差，结果表明新测量设备的测量误差为0.044（10⁻²  W / mm ² · K）。通过使用医用纳米颗粒和生理盐水制备纳米流体，并计算和测量CHTC。结果表明，理论模型误差为7.26％，验证了理论模型的正确性。