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This research is mainly focused on the analysis of tensile and flexural strength, water absorption angle measurement of untreated and silane treatment of natural kenaf fiber composites reinforced with silicon nanoparticles. The percentages of nano silicon were 0.5 wt%, 1.5 wt% and 2.5 wt%. Before reinforcement, the kenaf fiber was treated with silane solution ( 90 vol% of water and 10 vol% of pure silane) to enhance the bonding strength. The composites samples were prepared using Epoxy, Kenaf and Silicon nanoparticle (EKS) by the compression moulding process. The tensile and flexural strength were measured about automobile interior application. Moreover, the samples were immersed in water for 24 hours with different environmental conditions. The results indicated that the tensile strength of epoxy improved from 8-9% when increasing the nanoparticles. Also, it was found that 3-5% of strength enhancement in silane treated samples than untreated composites. Similarly, the flexural strength of silane treated samples were found higher about 4% than untreated samples. And, lower water absorption was noted with silane treated than untreated kenaf hybrid composites, which tends to improve the bonding. It causes improvements in mechanical strength with silane treated kenaf hybrid composites.

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Objectives:The thermosiphon is a device that transfers heat from a source to the environment. Electric and electronic supplies generate a greater amount of heat, so it's critical to transfer the heat efficiently. So we used TiO2 & Al2O3 nanofluid as a working fluid and made geometrical changes in the adiabatic section to improve the heat transfer efficiency. Methods: We tested thermosiphons with TiO2 & Al2O3 as working fluids in the heat input range of 50-300W at different inclination angles (0°, 45°and 90°), investigations are conducted. CFD flow analysis of thermosiphon such as fluid to steam phases all works carried on ANSYS FLUENT 18.1. Findings: The heat transfer coefficient of thermosiphon at different inclination points (0°, 45°and 90°) are find through by calculating heat transfer parameters. We find the heat transfer rate, pressure drop, mass stream rate, water.volume.fraction, stream.volume.fraction by using ANSYS FLUENT 18.1. Novelty: We increase the heat transfer coefficient of the thermosiphon by using TiO2 & Al2O3 as a working fluid and made geometrical changes in the adiabatic section of the thermosiphon to increase the flow rate of working fluid. This thermosiphon is suitable for electronic cooling applications due to its shift in adiabatic portion, which increases heat transfer efficiency and reduces weight.

Objectives: To understand the two-phase closed thermosiphons (TPCT) which is being used nowadays to reduce heat by using thermosiphon. Methods: The experiment is carried out with different inclination angles and by calculating the heat transfer parameters (mention them) 0°,45°,90° with the heat input of 50-250w and compare with previous results. Findings: The TPCT mainly has many advantages, having the capacity of transferring a high amount of heat in a small size. Nanofluid play an important role in the aluminum oxide (Al2O3) Nanofluid is used because of high thermal conductivity and low thermal resistance, Due to the presence of this Nanofluid, the heat transfer rate in the evaporator section gets decreased and at the time of applying the highest heat flux the thermal resistance tents to be low. Novelty: Aluminum oxide (Al2O3) Nanofluid was tested in the various setting angles 0°, 45°,90°. Among these 45° have shown better performance in all the properties such as low temperature and high heat transfer rate and high thermal conductivity. So the 45° have shown better performance compared to the other two setting angles.