Distilled water pool boiling experiments are conducted to investigate the effect of deposing silver nanoparticles via boiling-induced deposition method on porous foam covers on pool boiling performance and bubbles dynamic behavior. Two copper foams, named foam No. 1 (with 85% porosity and pore density of 30 PPI) and No. 2 (with 90% porosity and pore density of 40 PPI), are welded on copper specimens (Conical frustum) and then coated by silver nanoparticles using DZ nano-coolant nanofluid with a concentration of 25 mg/L. All the experiments are carried out at atmospheric pressure on both uncoated and nano-coated foams. The findings reveal that compared to a polished plain copper surface, uncoated foams No. 1 and No. 2 improve average boiling heat transfer coefficient by 58% and 86% and reduce wall superheat at ONB by 4.7 °C and 5.3 °C, respectively. However, due to the generation of more bubbles with smaller sizes and lower release periods on coated foams compared to uncoated ones, deposing nanoparticles on foam No. 1 and No. 2 contributes to further enhancements in heat transfer coefficients by 18% and 9% (at the best performance), respectively, and 0.3 °C further reduction in wall superheat at ONB. To evaluate the effectiveness of nanoparticle deposition on foam covers as a hybrid enhancement technique, the experimental results are compared with the results attained for nano-coated polished copper surface and also copper foam covers enhanced further by manipulating their wettability and macro-scale structure. The comparison results indicate that the coated foams perform better than the coated polished plain surfaces, notably at low heat fluxes. Also, the nanoparticle deposition on foam covers is seen to be of superior performance compared to the aforementioned hybrid enhancement techniques.

进行蒸馏水池沸腾实验以研究通过沸腾诱导沉积方法沉积银纳米粒子对多孔泡沫覆盖层对池沸腾性能和气泡动力学行为的影响。两种泡沫铜，分别命名为泡沫 1（孔隙率 85%，孔密度为 30 PPI）和 2 号（孔隙率 90%，孔密度为 40 PPI），焊接在铜试样（圆锥截头体）上，然后进行涂层使用浓度为 25 mg/L 的 DZ 纳米冷却剂纳米流体通过银纳米粒子。所有实验均在大气压下对未涂层和纳米涂层泡沫进行。研究结果表明，与抛光的普通铜表面相比，1 号和 2 号未涂层泡沫将平均沸腾传热系数提高了 58% 和 86%，并将 ONB 的壁过热分别降低了 4.7 °C 和 5.3 °C。然而，由于与未涂层泡沫相比，涂层泡沫会产生更多尺寸更小且释放时间更短的气泡，因此在 1 号和 2 号泡沫上沉积纳米颗粒有助于将传热系数进一步提高 18% 和 9%（在最佳性能下），以及 0.3 °C 进一步降低 ONB 的壁过热度。为了评估纳米颗粒沉积在泡沫覆盖物上作为混合增强技术的有效性，将实验结果与纳米涂层抛光铜表面获得的结果进行比较，并且通过操纵其润湿性和宏观结构进一步增强泡沫铜覆盖物。比较结果表明，涂​​层泡沫的性能优于涂层抛光平面，尤其是在低热通量下。还，