A. Dwivedi

National Institute of Technology, Hamirpur | NIT Hamirpur · Department of Mechanical Engineering

Energy storage in batteries is an emerging subject in the sustainable energy revolution. Battery utilization in Electric Vehicles (EVs) is increasing. Lithium-Ion Batteries (LIBs) will help meet emission objectives by promoting the use of renewable energy and electric vehicles. Extended cycle life and high energy density make LIBs popular for EVs....

To meet their energy demands, many households and institutions still rely on conventional fuel-based energy systems; especially in developing countries, besides several harmful health and environmental repercussions. Solar energy offers a viable renewable solution to such issues and can also be used for cooking purposes. Despite several positive...

Solar air heaters (SAHs) are widely accepted and used for drying and heating purposes. Numerous methodologies are available for augmentation of the performance of a SAH but the application of artificial roughness underside the absorber plate is reported to bean efficient one. This study aims to present the effects of using hybrid artificial roughne...

In the present scenario, food security is one of the major concerns in the Indian context; engendered due to increased population and other associated anthropological activities. Despite high levels of food production, the current poor ranking of the country in the Global Hunger Index (GHI) has put an alarming trend for policy-makers as well as the...

The selection of appropriate nano-additives for optimum battery thermal management system (BTMS) performance is an exigent task for decision-makers and is a multi-attribute decision-making (MADM) problem. This work presents a framework that utilizes the application of various MADM schemes. These techniques are integrated with a subjective weighting...

Today, the main challenge to world energy policies is to complete the energy demands of society more sustainably without polluting the environment. The application of renewable energy sources is an alternative solution, but they are less efficient compared to conventional sources. The efficient utilization of energy ensuring the minimum losses from...

The selection of suitable nanoparticles is an important task for their applications as heat transfer promoters for the mitigation of thermal issues in energy storage systems. This paper aims to present a systematic framework for the selection of nanoparticles based on multiple attribute decision‐making tools. A hybrid Grey relational analysis‐based...

In this era of industrialization, the major issue is to fulfill required energy demands with minimum possible pollution and solar energy is considered as the most potential non-conventional energy resource due to its pollution free nature. Solar heaters are the devices that utilize the incident solar radiations as useful energy using solar thermal...

The present work aims to investigate the heat transfer characteristics of heated cylindrical pins within an air-filled rectangular enclosure experimentally in a natural convection dominated regime. The experiments are performed to analyze the effects of fin spacing (25 mm ≤ S ≤ 100 mm) and Rayleigh number (248,659 ≤ Ra ≤ 578,395) as key factors at...

For the last few decades there has been very remarkable growth in electronics and computing technologies and it is still continuing unceasingly. The performance of various engineering devices is limited by thermal management problems. The present investigation deals with heat transfer augmentation through pin fins in gamma of an air-filled rectangu...

This study investigates the performance of triangular fin array within a rectangular enclosure with heated bottom wall experimentally at a wide range of Rayleigh number (295214 ≤ Ra ≤ 773410) for different fin height values (12.5 mm ≤ L ≤ 37.5 mm) and fin spacing values (25 mm ≤ S ≤ 100 mm). A new correlation is also proposed for the Nusselt number...

A very notable growth in electronics and computing technologies has been noticed for the last two decades and it is still continuing exponentially. This growth of these technologies has been reported to cause the enhanced rate of heat generation and thermal management problems. The parameters like fin length, fin spacing, Rayleigh number, type of w...

In this study, an optimum parametric design yielding maximum heat transfer has been suggested using Taguchi Philosophy. This statistical approach has been applied to the results of an experimental parametric study conducted to investigate the influence of fin height (L); fin spacing (S) and Rayleigh number (Ra) on convection heat transfer from tria...

The increasing numbers of thermal management problems in the various electronic and computing equipments, emphasize the need of effective cooling systems. Although attachment of extended surfaces (fins) is the most proposed way to enhance the heat transfer rate but sometimes addition of fins may deteriorate the heat transfer rate. So, it becomes im...

This article outlines the evaluation of optimum parametric design for heat transfer analysis through triangular fin array within a vertically oriented rectangular enclosure using general full factorial design approach. This statistical approach has been applied to the conclusions of an experimental analysis conducted to explore the effects of fin h...