This study aims to inspect the energetic and exergetic performance of a hybrid system involving a heat exchanger and a building-integrated concentrating photovoltaic/thermal (CPV/T) system equipped with a spectral splitting unit. The used spectral unit is a combination of glycerol/silver nanofluid (NF) and dotriacontane/gold nano-enhanced phase change material (NEPCM), which are used as spectral splitter and absorptive filter, respectively. The nanofluid, which is heated due to the absorption of thermal energy from the sun’s radiation, enters the heat exchanger to heat the water leaving the CPV/T system, which is preheated due to the absorption of heat from the photovoltaic panel. Mie and Rayleigh scattering principles are utilized to model the optical characteristics of the NF and NEPCM. The effect of the CPV/T system length, overall heat transfer coefficient of the heat exchanger, the mass flow rate of NF and water, as well as the thickness of NEPCM, nanofluid, coolant, and absorber layers on the average yearly energy and exergy efficiencies of the system is investigated. Among the studied cases, the hybrid system displayed its peak average annual energy and exergy efficiencies at 123.9 % and 17.08 %, respectively.
