MIT-World Peace University (MIT-WPU) is a top educational institute located in Pune, India. It is recognized within&nbsp;UGC under Government of Maharashtra Act No. XXXV 2017.&nbsp;

It is part of the MIT group of institutions (established in 1983) which covers 10+ campuses across India and has more than 50,000+ students enrolled across various disciplines at a given point of time. The institute houses 15 schools ranging from Engineering &amp; Technology, Design, Pharmacy, Commerce, Governance among others. It offers undergraduate, postgraduate and PhD programs among different disciplines.&nbsp;

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MIT World Peace University

The heat transfer can be done more efficiently with various methods. These methods are mostly used to save energy and materials and hence helping to make a financially effective method good enough to keep going long and fill its need. This paper enlists the various sorts of heat transfer enhancement techniques used. In recent times, there has been a considerable amount of research being carried out in the scope of improving the heat transfer. These methods can be broadly classified into three divisions: active, passive, and compound. The practises that require an outer wellspring of force are termed as the active methods, while the ones that don’t need an outer wellspring of force are referred to as the passive methods. The compound methods are the ones that use complex designs which limits their use. The main aim is to deal with the various types of heat transfer techniques and get a desired detailed information about them. The paper goes into the details using ribs in fin and tube heat exchanger to make a more efficient heat transfer. It is observed that for the normal fin and tube heat exchanger the heat enhancement was around 30% which was increased to 34% with the help of eight ribs on each side of fins. There is a slight increase in the heat transfer with an increase in the number of ribs. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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School of Mechanical Engineering

Engineering and Technology

Lecture Notes in Mechanical Engineering

Heat Transfer Enhancement of Fin and Tube Heat Exchanger Using Ribs

Magnesium alloys are suitable biological material because of its favourable mechanical qualities, high biocompatibility, and biodegradability. However, it has poor corrosion resistance and has rapid dissolution in the corrosive environment which will weakens its mechanical characteristics. The surface characteristics of magnesium alloy must thus be changed using a suitable surface modification technology, such as micro arc oxidation (MAO). It was observed that characteristics of MAO coating can changed by varying electrical parameters like duty cycle, current density, type of power output, frequency, and processing time. It was noticed that when all other factors are held constant, duty cycle, processing time, and frequency primarily effect the coating's porosity, number of cracks and thickness, which in turn influences how well the coating performs. DC, AC, pulsed bipolar, and pulsed unipolar, are the four categories into which the current regimes are classified. It was found that, unipolar current mode MAO coatings found to be rough, highly porous, and vulnerable to microcracks due to stronger spark discharge. MAO coating produced in a bipolar current type of mode have larger pores but are more uniform in thickness and compact. It was noticed that the in-vitro cell assays showed cells L929 on the Ca-P coated Mg alloy to have considerably good adhesion, a high growth rate, and strong proliferation (p 0.05). In other words, the cytocompatibility was greatly enhanced by the Ca-P coating. It was discovered that the Ca-P coated Mg alloy improved cell responsiveness and encouraged early bone formation at the implant/bone interface by both conventional pathological examination and immunohistochemistry investigation. The Ca-P coating was found to be an effective method for raising the surface bioactivity of Mg alloy. It was also observed that the calcium phosphate coating deposited by MAO process improve surface biomineralization which is the main mechanism behind bioactivity. Functional groups that are present on surface engage electrostatically through calcium and phosphate ions from solutions to start the biomineralization process. Calcium phosphates have excellent biocompatibility and are quite comparable to the mineral makeup of bone. The current study aims to investigate the bioactivity of calcium phosphate coatings and the characteristics of magnesium and its alloys. © 2023 Trans Tech Publications Ltd, Switzerland.

Key Engineering Materials

Recent Advances on Biocompatible Coating on Magnesium Alloys by Micro Arc Oxidation Technique

Nowadays, there is huge energy demand, and this energy demand is fulfilled by fossil fuels, but these non-renewable resources will create crisis in future especially for developing countries. Hence, the implementation of renewable resources and increasing their dependency is a major concern. In this paper, simulation was done for one of the heat transfer augmentation techniques in the solar water heater that by implementing rectangular fins also without fins and different materials such as copper, stainless steel, and aluminium. The CAD model was created in Solid works, and thermal analysis was done in Autodesk Fusion 360. Finally, the result achieved was that the rectangular-based solar water fin tube had greater heat flow than the without fin solar water tube by 12 °C. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Thermal Analysis for Solar Water Heater by Implementing Fins

The automobile sector has shown a year-on-year growth in terms of vehicles being disposed and revenue being generated. This drives the motive to conduct intensive research in this area to in order to suffice to change in dynamic needs of industries. Material selection and usage in development of automotive parts can be considered as a significant field of opportunity in terms of introducing heterogeneous combinations to achieve enhanced performance in vehicles. Among this, composites have tend to attract a lot of attention, in terms of manufacturing feasibility and the freedom of developing desired mixture of properties. Moreover with the advancements in additive manufacturing and hybrid manufacturing techniques, composites can be processed with more ease to form finished products with upgraded characteristics. Most of the literature in this area has focused on identifying the mechanical superiority of composites over metals (aluminum, steel). However, a comparatively less amount of work has been done on investigating the thermal behavior of composites. Thus, this paper intends to evaluate the thermal performance of a wheel hub developed using fiber-reinforced composite, during braking conditions in an ATV. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Analytical Study of Thermal Stresses Generated in a Carbon Fiber-Reinforced Wheel Hub

Fins are set on the surface of the cylinder to improve the quantity of heat exchange by convection. Addition of fins can increase the heat transfer from the surface by several folds. IC engine is used to generate the mechanical power from chemical energy contain in a fuel which released to combustion of fuel inside the engine. If excessive heat is not removed, engine components may fail due to excessive temperature. Only approximately 30% of energy released is converted into useful work, the remaining 70% must be removed from the engine to prevent engine parts from melting. To determine the heat transfer rate associated with the fin, we must first obtain the temperature distribution along the fin. The variety of fins are available to enhance heat transfer rate including parabolic concave/convex, triangular, rectangular, trapezoidal, circular and so on. But some of the profiles are difficult to manufacture. In this paper, performance of convex parabolic fin was investigated by Ansys software. In the analysis part total five cases of parabolic fin were considered by varying fin base width, tip width, pitch length, number of fins and fin diameter. Temperature variation of all five cases described in this paper were analyzed by using Ansys software. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.