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343 articles for “heat transfer”
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Enhancement of Thermo-hydraulic Properties of a Novel Composite-Based Spiral Fin Tube Heat Exchanger: An Experimental Investigation
Abstract: It is now crucial for engineers to enhance procedures and boost heat exchanger efficiency. Heat exchanger performance can be significantly enhanced by a variety of methods. Composite-based fins or enlarged surfaces are frequently utilized to increase the air-side heat transfer rate in a variety of heat transfer applications. Because composite materials are lightweight, highly thermally conductive, and resistant to corrosion, they were used. A composite based fin's efficiency is influenced …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 238–251 Read article
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Investigation to Enhance Performance of Finned U-Tube Shell-and-Tube Heat Exchangers Using Epoxy Based Polymer Composite Material
Abstract: Shell-and-tube heat exchangers remain indispensable in thermal engineering systems; however, conventional metallic configurations often face challenges related to corrosion, weight, and limited thermal optimization. In this study, a novel approach is proposed by integrating epoxy-based polymer composite materials with finned U-tube geometries to enhance thermo-hydraulic performance while addressing material limitations of traditional systems. The work focuses on the development and evaluation of a hybrid heat exchanger comprising a mild steel …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 618–633 Read article
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Deductive Group Method for Heat Transfer of Gas Laminar Forced Convection Flow with Variable Physical Property
Abstract: The deductive group transformation technique is applied to derive invariant solutions for laminar forced convection flow having variable physical property. The one-parameter deductive group transformation reduces the number of independent variables by one and hence governing partial differential equation is reduced to ordinary differential equation with appropriate boundary condition. Resulting ordinary differential equation is solved using mathematical software and the results are graphically presented. From the graph, it is observed …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 2, 2019 · pp. 52–60 Read article
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Advancements in Heat Exchanger Design for Improved HVAC System Efficiency
Abstract: Due to their direct impact on usage of energy, operational effectiveness, and environmental sustainability, heat exchangers have become vital components of the air conditioning, ventilation, and heating (HVAC) systems. The growing demand for energy-efficient HVAC solutions has driven extensive research and development efforts aimed at improving heat exchanger performance. Traditional designs, such as shell-and-tube and fin-and-tube heat exchangers, have long been utilized in HVAC applications. Nevertheless, these traditional types frequently …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 12, Issue 1, 2025 · pp. 44–52 Read article
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Numerical Study on Thermal Performance Assessment of a Compact Heat Exchanger Equipped with Two Broken Twisted Strips
Abstract: Twisted strips are a widely used technique for heat transfer enhancement. In the present study, it proposed that two broken twisted strips aiming at achieving good thermohydraulic performance. Effects of the two broken twisted strips (BTS) on the heat transfer, friction factor and thermal performance factor behaviours in a heat exchanger are reported along with smooth duct. The computations are based on the finite volume method with the SIMPLE algorithm …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 2, 2015 · pp. 22–30 Read article
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Augmentation of Heat Transfer in a Trough Shaped Solar Collector Compared to Flat Plate Collector Using CFD
Abstract: Surface Enhancement plays a vital role in augmenting the thermal performance of flat plate collectors. In this paper, an attempt is made to explain in a comparative way the effect of surface geometry of solar flat plate collector having troughs with that of a normal collector. Flat plate collectors with and without troughs of dimensions 1 × 0.5 m is modelled in CATIA V5R19 and meshed using ANSYS ICEM CFD. …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 1–7 Read article
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Coils used for cooling and dehumidifying include integrated water-cooled transformers that transfer heat and mass simultaneously
Abstract: For use in middle-frequency induction heating, a single-turn work coil and integrated water-cooled transformer are proposed. The hollow, water-cooled secondary, which is an extension of the work coil, contains the transformer's primary.. The use of liquid cooling for the work coil, coaxial transformer, and switching components is advantageousThe transformer's coaxial structure, which enhances coupling between the converter and the workpiece, allows for low leakage inductance.The difference in current distributions is …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 2, 2022 · pp. 6–10 Read article
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Corrugated Tube Shell-and-Tube Heat Exchanger Using Epoxy-Based Polymer Composite Coatings for Lightweight and Efficient Thermal Systems
Abstract: Corrugated tube geometries are widely recognized for their ability to enhance heat transfer through boundary layer disruption and secondary flow generation. In this study, a combined experimental and computational investigation is carried out to evaluate the thermo-hydraulic performance of a shell-and-tube heat exchanger incorporating corrugated stainless steel tubes integrated with an epoxy-based polymer composite coating and housed within a mild steel shell. Unlike conventional metallic systems, the present work introduces …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 603–617 Read article
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Thermo-Hydraulic Enhancement of Annular Finned Shell-and-Tube Heat Exchangers Using Epoxy-Based Polymer Composites: A Material–Geometry Coupled CFD Investigation
Abstract: Shell-and-tube heat exchangers remain a backbone of industrial thermal systems, yet their performance is often limited by relatively low shell-side heat transfer and the weight and cost associated with conventional metallic components. In this context, the integration of polymer composite materials offers a promising pathway toward lightweight, corrosion-resistant, and performance-tunable heat exchanger designs. The present study investigates the thermo-hydraulic performance of a straight-tube shell-and-tube heat exchanger equipped with annular fins, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 669–684 Read article
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Thermo-Hydraulic Performance of a Double-Pipe Double-Pass Heat Exchanger using Annular Fins and Graphite-filled Epoxy Composite Tubes
Abstract: Double-pipe heat exchangers remain one of the most widely adopted thermal devices because of their simple construction, operational reliability, and ease of maintenance. Nevertheless, their performance is often constrained by the limited heat transfer area of smooth tubes and the long-term challenges associated with metallic materials, including corrosion, scaling, and structural weight. Recent advances in thermally conductive polymer composites provide an opportunity to overcome these limitations by replacing conventional metals …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Numerical Analysis of Thermal Performance of Cylindrical Perforated Pin Fins for Aligned Arrangement
Abstract: Present paper investigates the thermal characteristics pertaining to laminar forced convection heat transfer enhancement achieved in a flat surface mounted with cylindrical perforated pin fins in a rectangular channel having a area of cross section 280 x150 mm2.The analysis was done for the range of angle of perforated holes from 00 to 600 for a constant value of Reynolds Number and fixed fin spacing of 40 mm using air as …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 7, Issue 1, 2020 · pp. 8–16 Read article
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Thermal Performance Enhancement Strategies for a Compact Solar PV-Powered Concentrating Water Heating System Through Integrated Collector Design
Abstract: Solar water heating systems have emerged as one of the most promising renewable energy technologies for reducing dependence on conventional fossil fuels and electricity-based water heating. However, the thermal performance of compact solar water heaters is often limited by inadequate solar absorption, poor heat transfer, and thermal losses within the collector assembly. This study presents a theoretical investigation of thermal performance enhancement strategies incorporated into a compact solar photovoltaic (PV)-powered …
Published in International Journal of Energy and Thermal Applications · Vol. 4, Issue 2, 2026 Read article
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Thermoelectric Waste Heat Recovery from Industrial Exhaust Systems Using Nanostructured Hybrid Heat Exchangers
Abstract: The efficient utilization of industrial waste heat has become a critical strategy for improving energy efficiency, reducing fossil fuel consumption, and minimizing greenhouse gas emissions in modern manufacturing sectors. This study proposes a thermoelectric waste heat recovery (TWHR) system integrated with a nanostructured hybrid heat exchanger to enhance heat transfer performance and maximize electrical power generation from high-temperature industrial exhaust streams. The proposed system employs nanostructured surface modifications combined with …
Published in Journal of Thermal Engineering and Applications · Vol. 13, Issue 2, 2026 Read article
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Thermal Performance Analysis and Optimization of Pin-Fin Heat Sink Using CFD, Taguchi Method, and Machine Learning
Abstract: Efficient thermal management is essential for improving the performance and reliability of modern engineering systems and electronic devices. This study presents the design, simulation, and optimization of a pin-fin heat sink using SolidWorks for three-dimensional modeling and ANSYS for thermal and computational fluid dynamics (CFD) analysis. Four different pin-fin geometries, namely square, pentagon, octagon, and circular fins, are considered to evaluate their thermal performance under varying operating conditions. Aluminum is …
Published in Trends in Mechanical Engineering & Technology · Vol. 16, Issue 2, 2026 · pp. 8–20 Read article
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Analysis of Thermo Hydraulic Performance of Artificial V-Rib Roughness of Solar Air Heater: A Review
Abstract: Solar air heaters (SAHs) are the simplest energy conversion device which transforms incoming solar radiation to thermal energy. In traditional SAH the convective heat transfer rate is low. To improve heat transfer rate the artificial rib roughness is employed on the absorber plate. Although rib roughness increases the heat transfer rate, as well as the pressure drop due to friction. So in order to achieve maximum increment in thermo hydraulic …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 1, 2022 · pp. 18–28 Read article
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Improved Cooling Effectiveness in Radiators and Heat Exchangers with Nanofluid-Based Technology
Abstract: This study discusses how the process of heat transfer in radiators and heat exchangers can be improved using nanofluids and analysis of computational fluid dynamics. These nanofluids comprise Al₂O₃ and ZnO dispersed in water-based ethylene glycol solutions, and graphene oxide dispersed in water-based solutions, and performance evaluation was done for the range of flow rates 180–420 l/h. And a 3D CAD model was created using the ANSYS Workbench. It was …
Published in Recent Trends in Fluid Mechanics · Vol. 12, Issue 1, 2025 · pp. 31–62 Read article
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Performance Analysis of Graphene Reinforced Sug-ar-Alcohol Based PCM for Thermal Energy Storage System
Abstract: The thermal-conductivity of the Phase Change Materials (PCMs) of thermal heat storage systems is improved by distributing nano-particles in the basic PCM for a faster rate of heat transfer. During the charging and discharging procedures, the heat transfer properties of the newly created Sugar-Alcohol based PCM dispersed with 1.0 wt% graphene nanoparticles in a shell and helical tube storage tank were examined. The helical tube configuration caused the melting and …
Published in Journal of Polymer & Composites · Vol. 13, Issue 3, 2025 · pp. 133–147 Read article
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Investigating Temperature Effects on Thermal Analysis of Composite Heat Pipes with Diverse Geometrical Configurations
Abstract: As the demand for efficient heat dissipation technologies continues to surge, understanding the intricate interplay between temperature variations and the thermal performance of heat pipes assumes paramount importance. This study investigates the impact of temperature fluctuations on the thermal behaviour of heat pipes with diverse geometric configurations. A comprehensive analysis is conducted utilizing advanced computational simulations coupled with experimental validation techniques. Heat pipes are an innovative heat transfer device with …
Published in Journal of Polymer & Composites · Vol. 12, Issue 3, 2024 · pp. 20–34 Read article
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CFD Analysis of Six-Flow Microchannel Heat Sink Using the Different Nanofluid
Abstract: In this study, we compare the heat-conveying capabilities of ordinary water with those of cooling fluids such as Ag-Water, TiO2-water, and Al2O3-water nanofluid at a volume percentage of 0.50%, and we also examine the six flow micro-channels of the fin-equipped heat sink. Hardware like microprocessors and integrated circuits are not used in the comparison. To evaluate the effectiveness of different cooling fluids, a number of thermal metrics are used, such …
Published in Journal of Polymer & Composites · Vol. 11, Issue 11, 2023 · pp. 1–11 Read article
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DESIGNING AND ANALYSIS OF DIFFERENT TYPES OF FINS IN AIR COOLED ENGINE
Abstract: This paper is dedicated to the study of various shapes of extended surfaces, commonly known as fins, which are used on cylinder heads of internal combustion engines. Extended surfaces are used to improve heat dissipation from the object by increasing its effective surface area. Efficient heat dissipation is very important since proper cooling of an engine cylinder head helps to maintain optimal working temperatures, improves engine performance, increases service life, …
Published in Journal of Thermal Engineering and Applications · Vol. 13, Issue 1, 2026 · pp. 33–79 Read article