Multivariable optimisation of a new PCMs integrated hybrid renewable system with active cooling and hybrid ventilations

In this study, to enhance the cooling energy storage capacity of building façades and to facilitate the heat dissipation of extreme solar photovoltaic temperature, a hybrid renewable system has been proposed, systematically integrating hybrid ventilations, active PV cooling, radiative cooling together with PCMs’ storages. The hybrid renewable system is consisted of a ventilated Trombe wall integrated with phase change materials, and a photovoltaic/thermal panel with phase change material. The equivalent overall output energy was proposed to comprehensively evaluate the energy performance of the hybrid renewable system with respect to different energy forms, advanced energy conversions and distributed energy storages. Multivariable optimisation was conducted for the maximisation of the equivalent overall output energy regarding both geometrical and operating parameters using the Taguchi method. The optimal parameters’ combination was thereafter quantitatively identified using the-higher-the-better objective function. Simulation results for different scenarios with different geometrical and operating parameters have been presented to demonstrate and verify the effectiveness of the proposed technique.