Simultaneous Enhancement in the Electrical Conductivity and Reduction in the Lattice Thermal Conductivity Leading to Enhanced Thermoelectric ZT Realized by Incorporation of Metallic Nanoparticles into Oxide Matrix

Thermoelectric is a phenomenon of the temperature difference conversion into electrical energy or vice versa. The phenomenon has been developed into a module so that it can be used as a power generator or as a cooling/heating device. The use of thermoelectric can be further expanded as a system for generating small electrical energy and as a component for compact cooling and heating. If a unidirectional voltage is applied to the thermoelectric module, a temperature difference occurs between the two sides of the module. The cold side can be used as a cooler and the hot side can be used as a heater. Thermoelectric refrigeration technology has been applied in various applications such as beverage coolers and electronic coolers. However, the application of this technology in the vehicle still needs attention because it has good potential. Reviews relating to the application of thermoelectric cooling in vehicles are still not widely discussed, especially in terms of vehicles such as the performance of electric motors and braking. So, in this study, the use of thermoelectric as coolants in large components such as cooling in electric vehicles and braking components are discussed. Basic knowledge of the history, characteristics, performance of thermoelectric are also covered. Studies that had been carried out in several reported topics prove the potential and reliability of thermoelectric.

Section: Thermoelectric Principlementioning

confidence: 99%

Mini Review of Thermoelectric and their Potential Applications as Coolant in Electric Vehicles to Improve System Efficiency

Harsito¹,

Putra²,

Purba³

et al. 2023

“…All the experimental work is conducted on graphenebased composite carbon fibre using copper as tool electrode 24) , 25) . MRR and TWR were calculated from the experiments and the most influencing process parameters are observed 26) .…”

Section: Figure 4 Fabrication Process Of Metal Matrix Compositesmentioning

confidence: 99%

Effects of Nanoparticles on the MRR and TWR of graphene-based Composite by Electro discharge Machining

Sharma¹,

Mausam²,

Sharma³

2022

In the current scenario, Graphene-based carbon fiber composite is highly used nanomaterial for the work-piece material that is employed in various applications (aerospace, automotive) due to its light weight, great strength, as well as high strength-to-weight ratio. In the experimental work, copper based tool electrode is used to remove the material. The work approach involves the four processing parameters of EDM such as input current (Ip), voltage gap (Vg), pulse on time (Ton) and pulse off time (Toff) which was used to evaluate the material removal rate (MRR) and tool wear rate (TWR). For optimization of MRR and TWR via processing parameters, Taguchi method was used in the experimental work. The L9 orthogonal array was generated using MINITAB 17 software. The work analysis approaches towards the different weight fractions of (0.1 and 0.3wt% of graphene) in carbon fibre composite for comparing the MRR and TWR. The effects of processing parameters on MRR and TWR via EDM oil and copper nanoparticles is examine. The MRR and TWR via Copper nanoparticle mixed EDM oil was observed to have the maximum and minimum value respectively as compared to normal EDM oil. The suitable value of MRR and TWR was observed with 0.3wt% of graphene in carbon fibre composite as compared to 0.1wt% of graphene via copper nanoparticle mixed EDM oil.

“…Subsequently, the friction between the two contact surfaces can be productively diminished. Moreover, the existence of nanoparticles in the base fluids might contributed to enhance a flow of mixing and provide higher thermal conductivity 17), 18) . Sharma et al 19) reported the usage of nanoparticles in nanofluid during the turning process improved the tribological properties by reducing the friction coefficient, thus reduced the machining force and tool wear.…”

Section: Introductionmentioning

confidence: 99%

Tribological Study of Activated Carbon Nanoparticle in Nonedible Nanofluid for Machining Application

Talib¹,

Jamaluddin²,

Sheng³

et al. 2021

Nonedible vegetable-based oil was recently explored due to the demand for a sustainable element in a machining process. The aim of this study is to critically analyse the tribological performance of nanofluid from nonedible (modified jatropha oil, MJO) nanofluid added with activated carbon nanoparticles. The tribology test was conducted through four-ball test using various concentration ratios of nanoparticles. According to the findings, MJOa2 (0.025wt.% activated carbon in MJO) showed the lowest coefficient of friction and mean wear scar diameter, produced a smoother surface with low surface roughness value, followed by MJOa3 (0.05wt.% activated carbon in MJO), MJOa1 (0.01wt.% activated carbon in MJO) and synthetic ester (SE). Therefore, MJOa2 was considerably suitable for metalworking fluid application which emphasizing the element of sustainability.