建立了测量纳米流体对流换热系数的实验系统,测量了不同粒子体积份额的水-Cu纳米流体在层流与湍流状态下的管内对流换热系数,实验结果表明,在液体中添加纳米粒子增大了液体的管内对流换热系数,粒子的体积份额是影响纳米流体对流换热系数的因素之一。综合考虑影响纳米流体对流换热的多种因素,提出了计算纳米流体对流换热系数的关联式。 An experimental system for measuring the convective heat transfer coefficient of nanofluids was established. The convective heat transfer coefficient of water-Cu nanofluid with different particle volume fractions in laminar and turbulent flows was measured. The experimental results show that the addition of nanoparticles Large liquid tube convection heat transfer coefficient, particle volume share is one of the factors that affect the convective heat transfer coefficient of nanofluids. Considering various factors that affect the convective heat transfer of nanofluid, a new method to calculate the convective heat transfer coefficient of nanofluids is proposed.