Heat transfer characteristics of fluids containing paraffin core-metallic shell nanoencapsulated phase change materials for advanced thermal energy conversion and storage applications

The influence of heat transfer characteristics fluids filled with paraffin core-metallic shell nanoencapsulated phase change material (PCM) on photothermal conversion and storage in a volumetrically heated solar system is numerically analysed. results show that paraffin/Al, paraffin/Au, paraffin/Ag, paraffin/Cu enhance the energy by 68, 73, 92 86 %, respectively as compared water-based Al, Au, Ag Cu nanofluids. It found slurry (PCS) improves temperature gain, utilization PCM rise mass concentration absorption power slurry. maximum enhancement stored also observed for particle diameter 15 nm. from 5 to 20 thermal performance 312 554 % pure water, respectively. Increasing size core/shell architecture PCM, however, reduces surface area-to-volume ratio capsule, causing aggregation particles decreasing between capsule host fluid. This turn decrease gain. Furthermore, it noticed merger mono- hybrid- nanoparticles augments PCS. findings study indicate PCMs would significantly advanced devices.