MXene based new class of silicone oil nanofluids for the performance improvement of concentrated photovoltaic thermal collector

Abstract

In this research work, MXene with a chemical formula of Ti3C2 is used for the first time with silicone oil to improve thermo-physical properties of MXene based silicone oil. This paper focuses on preparation, characterization, thermal properties, thermal stability and performance investigation of new class of silicone oil nanofluids induced with MXene in three different concentrations for a Concentrated Solar Photovoltaic Thermal (CPVT) collector.The thermal conductivity of the silicone oil-based MXene nanofluids is measured using a Transient Hot Bridge (THB) 500. Viscosity is measured using a Rheometer at various temperatures including 25, 50, 75, 100, and 125 °C. Perkin Elmer Lambda 750 is used to measure optical absorbance. The highest thermal conductivity enhancement is found to be 64% for 0.1 wt.% concentration of silicone oil-MXene nanofluid compared to pure silicone oil at 150 °C. The viscosity of MXene with silicone oil nanofluids is found to be independent of addition of MXene nanoparticles in the silicone oil base fluid. Viscosity is reduced by 37% when temperature is raised from 25 ºC to 50 ºC for different concentrations of MXene with silicone oil . Silicone oil-based MXene nanofluid with 0.1 wt.% concentration is thermally stable up to ~ 380 °C. Introducing more MXene nanoparticles into silicone oil improves electrical efficiency of PV module due to better cooling of MXene based nanofluids. Higher solar concentration is resulted in higher average temperature of the PV module. This consequently raises thermal energy gain which is useful for different applications.

Improved Thermophysical Properties and Energy Efficiency of Aqueous Ionic Liquid/MXene Nanofluid in a Hybrid PV/T Solar System

“…Inclusion of solid nanoparticles into the heat transfer fluids can substantially improve optical and thermophysical properties [ 9 , 10 , 11 ]. The inclusion of nano-sized solid particles into base fluids, referred to as ‘nanofluids’, significantly alters thermophysical properties of the base liquids especially thermal conductivity [ 12 , 13 , 14 , 15 , 16 ]. Choi and Eastman [ 17 ] were the pioneers who coined the term “nanofluid”.…”

Investigating the rheology of 2D titanium carbide (MXene) dispersions for colloidal processing: Progress and challenges

“…While the majority of studies into MXenes have used water as their main solvent, stable dispersions of Ti 3 C 2 T x have been made with a number of other solvents, meaning they could be utilised in a wider range of potential applications and processing routes [6,14,41]. For example, Vural et al were able to use dimethyl sulfoxide (DMSO)-which had previously been used to delaminate multilayer Ti 3 C 2 T x [42]-in the inkjet printing of Ti 3 C 2 T x -protein electrodes for stimuli-responsive electromagnetic shielding [43].…”

“…0.1 wt% Ti 3 C 2 T x increased the thermal conductivity of silicone and soybean oil by ca. 60%, and little degradation was observed over a period of 2 weeks [41,45]. G ′ ) and loss ( G ′′ ) moduli as a function of oscillatory strain amplitude; G ′ is plotted with markers, and G ′′ is plotted without.…”

Development of an artificial neural network for the prediction of relative viscosity of ethylene glycol based nanofluids

“…[1,2]. Nanofluids exhibits enhanced thermophysical properties due to which they have a wide number of applications such as in automotive industry [3,4], electronics cooling [5,6], solar thermal and photovoltaic systems [7,8] etc. A lot of research has been done in order to determine the parameters affecting the thermophysical and rheological properties (such as thermal conductivity, viscosity etc.)…”