Numerical study on energy and exergy performances of a microencapsulated phase change material slurry based photovoltaic/thermal module

Abstract

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Effect of heat exchanger configurations on energy and exergy of photovoltaic thermal system using coolant

“…For the heat-absorbing plate covered by photovoltaic panels, there are radiation and convection to the ambient. Hence, the net heat flow obtained by the heat-absorbing plate qcover can be calculated as [13]:…”

“…Much research has been conducted to investigate the performance of different types of nanofluids in enhancing the performance of photovoltaic thermal system e.g., non-metal/metal oxide nanofluid, metal elemental nanofluid [5][6][7][8], and inorganic carbon-based nanofluid [6,7,[9][10][11][12]. In addition, some researches have been conducted to optimize the heat exchanger structure on the back of the photovoltaic panel in using nanofluid/phase change material/ microcapsule phase change nanofluid, in order to improve the efficiency of the PVT system [3,4,[13][14][15].…”

Experimental investigation of the usability of the rifled serpentine tube to improve energy and exergy performances of a nanofluid-based photovoltaic/thermal system

“…Exergy and entropy are the two important concepts in the thermodynamical systems, the former shows the system's ability to execute useful work whilst the latter indicates the system's inability to execute useful work [33]. The important concept of exergy is used in nanofluid-based PVT system also by various researchers [34][35][36][37][38]. Sardarabadi et al [34] experimentally investigated the performance of nanofluid SiC/water nanofluid in PVT system.…”

“…For this purpose, they used a combination of nanofluid (ZnO/water) and PCM (paraffin wax), which resulted in an attainment of 13.6% of overall exergy efficiency. With a similar objective of improving the exergy performance, a microencapsulated PCM slurry was used as a cooling fluid by Yu et al [37]. In their study, the exergy performance was mapped with the variation of the melting point and slurry concentration.…”

Natural convection of water and nano‐emulsion phase change material inside a square enclosure to cool the electronic components

“…They found that the thermal and exergy efficiencies have been improved 8.3% and 3.23%, respectively. 81 Other researchers have used MPCM to improve cooling performance of different systems. 82,83 In recent years, with the advancement of technology and the production of materials in nano scales, nanomaterials are widely used in various fields including drug delivery, 84,85 adsorption, 86 heat transfer and natural convection, 87 and desalination membranes.…”