International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 04 | Apr 2024
p-ISSN: 2395-0072
www.irjet.net
Review Paper on Forced Convection Heat Transfer Augmentation by Using Flow Divider Type Inserts Mr. S. S. Magade1, Prof. S. S. Kale2, Dr. S. S. Gawade3 1PG Student of Mechanical Department, N. K. Orchid College of Engineering & Technology,
Solapur 413002, India 2Asst. Professor of Mechanical Department, N. K. Orchid College of Engineering & Technology, Solapur 413002, India 3Professor of Mechanical Department, RIT Rajaramnagar affiliated to Shivaji University, Kolhapur, India
---------------------------------------------------------***------------------------------------------------------Abstract – In the realm of industrial operations, heat
exchangers serve a pivotal function. Improving their efficiency can be achieved through the utilization of heat transfer enhancement methods. These techniques find widespread application across various sectors including chemical processing, evaporator heating and cooling, thermal power generation, air conditioning, refrigeration, and automotive radiator systems, among others. Heat transfer enhancement techniques are typically categorized as active, passive, or compound. This research focuses on exploring passive techniques for enhancing heat transfer. Specifically, this study conducts a comprehensive review of recent advancements in heat transfer enhancement utilizing non-metallic inserts. The analysis encompasses a survey of various research endeavors, methodologies employed, and resultant findings in this domain. Furthermore, the investigation delves into the discussion of diverse insert types, their geometries, and the influence of such geometries on heat transfer rates. Key Words - Forced convection, Heat transfer augmentation, Flow Divider Insert inserts.
1. INTRODUCTION
Heat transfer, defined as the movement of energy from one region to another due to temperature disparities, is integral to numerous industries such as food and beverage processing, chemical manufacturing, automotive, and thermal sectors, directly impacting their economic viability. Improving the efficacy of heat transfer devices not only leads to energy, material, and cost savings but also contributes to environmental sustainability. The study of enhancing heat transfer performance is commonly referred to as heat transfer augmentation, with a primary focus on elevating convective heat transfer coefficients. Passive techniques for heat transfer augmentation, which do not require external power sources, have garnered significant attention due to their cost-effectiveness and performance efficiency compared to active methods. This paper delves into a detailed examination of heat transfer augmentation utilizing passive techniques. In passive methods, convective heat transfer coefficients are enhanced by minimizing thermal resistance, thereby facilitating improved heat transfer. This can be achieved through methods such as increasing effective heat transfer area or inducing turbulence in the fluid flow within the device.
In today's contemporary landscape, the efficient utilization of available energy while minimizing material usage and process costs has become a paramount concern post the industrial revolutions. Ensuring the effective use of energy with minimal environmental impact has emerged as a significant imperative towards sustainable development, particularly in the design of devices aimed at facilitating heat energy exchange between two or more fluids. To address this imperative, extensive research has been undertaken globally, exploring various methodologies for optimizing energy utilization. Augmentation techniques for heat exchangers, including active, passive, and compound methods, have been proposed and implemented to enhance performance.
Enhancing effective heat transfer area involves modifications within the conduit, such as introducing rough or extended surfaces. Turbulence generation, on the other hand, can be accomplished using inserts or turbulators. Forced convection heat transfer, a mechanism where fluid motion is induced by an external source such as a pump or fan, plays a crucial role in facilitating efficient heat transfer. This mechanism finds widespread application in everyday scenarios including air conditioning, central heating, steam turbines, and various industrial processes, highlighting its significance in enabling efficient energy transfer.
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