Abstract
The key step for using nanoparticles for heat transfer applications is to prepare nanofluids, either through the one-step or two-step method. Among applications of nanofluids in heat transfer are to use them as working fluid for hybrid photovoltaic thermal (PV/T) systems. PV/T systems combine photovoltaic modules and solar thermal collectors to produce hot water and electricity simultaneously. This chapter presents classifications of PV/T systems, principles, and performance. Moreover, detailed introduction to nano-material is used for PV/T systems and related parameters such as volume fraction (%) and mass flow rate. Furthermore, the chapter provides a case study of three different PV/T systems which are nanofluid and nano-phase change material (nano-PCM)-based PV/T, a water-based PV/T with a PCM tank, and water-based PV/T with water tank. The findings show an overall improvement in thermo-physical properties as nanoparticles are added to base fluid (water) and phase change material (PCM). Moreover, the highest performance is attributed to the nanofluid and nano-PCM-based PV/T system.
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