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131 articles for “rate of heat transfer”
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Solar Heat Pipe Design and Heat Loss Analysis
Abstract: Abstract: This paper is detailed on the design and heat loss analysis of solar heat pipe. Solar heat pipe is thermal device which use to transfer abundant amount of solar energy to working fluid through very smaller cross section area. Solar heat pipe server so many applications in engineering, i.e., water heating system, aerospace application, refrigeration and air conditioning and process industries. The design of heat tube includes finding diameter …
Published in Journal of Thermal Engineering and Applications · Vol. 6, Issue 1, 2019 · pp. 24–28 Read article
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Enhancing Heat Transfer in Exchangers: Nanoparticle-enhanced Fluids for Improved Thermal Performance
Abstract: This research investigates the utilization of nanoparticle-enhanced fluids to improve the thermal performance of heat exchangers. Heat exchangers play a pivotal role in numerous industrial applications and energy systems, necessitating continuous efforts to enhance their efficiency. Nanotechnology has recently emerged as a promising avenue for achieving this goal. The study begins with a comprehensive review of existing literature, highlighting the significance of heat exchangers and the potential benefits of incorporating …
Published in Journal of Thermal Engineering and Applications · Vol. 10, Issue 2, 2023 · pp. 23–30 Read article
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Thermal Modeling of Open Sun Drying System: An Experimental Validation
Abstract: In the work being presented, the expressions for crop and moist air temperatures of open sun drying system in quasi - static state conditions have been derived. The analysis was carried out by writing energy balance equations for crop surface and moist air above the crop surface. A computer model was developed to predict the crop temperature and moisture evaporation rate of potato slices of approximately 2.5 mm thickness exposed …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 5, Issue 2, 2015 · pp. 30–39 Read article
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Experimental Investigation of Overall Heat Transfer Coefficientin Drop wise Condensation
Abstract: The experiments are performed to study the heat transfer characteristics over a drop wise condensation. The phenomenon of drop wise condensation is in which the condensate forms into drops rather than covering the entire cooling surface with a continuous film. In drop wise condensation, heat transfer coefficient produced is 2 to 10 times greater than those produced by film wise condensation. Hence drop wise condensation is desirable as it is …
Published in Trends in Mechanical Engineering & Technology · Vol. 11, Issue 2, 2021 · pp. 17–21 Read article
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Mechanism of Cryosurgery: A review
Abstract: The cryosurgery is a useful surgical technique in which the undesirable tissue such as tumors are easily removed by extreme cooling. Cryosurgery’s primitive benefit is that as a percutaneous method, it minimizes the invasiveness and cost associated with conventional surgery. Various types of Cryogens which are used in cryosurgery include nitrogen oxide, liquid nitrogen and liquid argon having boiling temperature of -89.5°C, -196°C, and -187°C respectively. Generally liquid nitrogen (LN2) …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 6, Issue 2, 2016 · pp. 1–5 Read article
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Improving Indoor Room Air Conditioning Using PID Control
Abstract: Energy use in building air conditioning contributes significantly to power demand; therefore, in this work, we propose an improved methodology to achieve comfort conditions through PID control assistance. The project develops a mathematical model based on analytical heat transfer equations for comfort conditions by fulfilling the Fanger equation, considering environmental parameters (ambient temperature), metabolic rate, and people’s physical activity (internal heat generation) to reduce power consumption and improve energy efficiency. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 12, Issue 1, 2025 · pp. 1–21 Read article
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Coupled Magneto–Thermal–Diffusion Transport in an Unsteady Maxwell Polymer Fluid with Activation Energy over a Porous Stretching Surface
Abstract: The present study investigates the combined effects of activation energy and diffusion-thermo (Dufour) processes on unsteady magnetohydrodynamic (MHD) flow, heat, and mass transfer of a Maxwell viscoelastic fluid past a porous exponentially stretching vertical sheet. The electrically conducting and incompressible polymeric fluid flows through a saturated porous medium under a transverse magnetic field. The governing momentum, energy, and concentration equations are transformed into nonlinear ordinary differential equations using similarity transformations …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 581–590 Read article
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The Effect of Dynamics and Mass Transfer Limitation on the Kinetic Growth Rate of Methane Gas Hydrates
Abstract: Hydrate management aims to prevent impediments to fluid flow in pipes caused by hydrate deposition. To achieve this goal effectively, a comprehensive understanding of the thermodynamics and kinetics of hydrate formation is essential for predicting their equilibrium conditions, quantifying the amount of deposition, and estimating the associated risk. Hydrate growth studies are a relatively new field, and independent laboratory experiments have shown that hydrate growth is controlled by heat transfer, …
Published in Journal of Petroleum Engineering & Technology · Vol. 16, Issue 1, 2026 · pp. 76–84 Read article
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Numerical Study of Heat Transfer in Six Channeled Dimpled Plate Heat Exchanger
Abstract: Heat transfer augmentation is the most important criteria in many chemical, pharmaceutical and mechanical industry sectors. Considering this factor into account, heat transfer surface modification is being done for heat transfer augmentation purpose. Making dimples on heat transfer surface is one such augmentation technique. This study presents numerical analysis of six channeled counter current dimpled plate heat exchanger, in which the relative depth (dimple depth to diameter ratio (δ/D)) is …
Published in Journal of Thermal Engineering and Applications · Vol. 2, Issue 1, 2015 · pp. 15–25 Read article
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Comparison Study of Longitudinal Rectangular and Helical Fins in the Annulus Side of Double Pipe Heat Exchanger
Abstract: A comparison of experimental study is made between the enhancement of heat transfer in the horizontal double pipes with helical fins and longitudinal rectangular fins in the annulus side. The material is copper with inner tube internal diameter 10 mm, inner tube thickness 1 mm, outer tube external diameter 40 mm, outer tube thickness 1.5 mm, pitch length of 50, 75 and 100 mm, heat exchanger length 1100 mm for …
Published in Trends in Mechanical Engineering & Technology · Vol. 7, Issue 3, 2017 · pp. 29–35 Read article
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Modeling and Simulation of Spiral Plate Heat Exchanger
Abstract: The spiral-plate heat exchanger (SHE) offers efficiency in spacing and reduces heat losses. SHE’s offer high reliability, lower spaces occupancy, high heat transfer coefficient and on-line performance in many severely fouling services such as slurries. Experimental investigations were conducted in a spiral plate heat exchanger with hot water as the service fluid and cold water in different flow rates as the cold process fluid. The experiments were conducted essentially in …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 1, 2014 · pp. 22–29 Read article
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Impact of Mould Material on Microstructure and Mechanical Properties of Aluminium Castings: A Comparative Study with Aluminium Matrix Composites
Abstract: Casting has a wide industrial usage because it allows manufacturing complicated forms even at a comparatively low cost. Issues like transfer of heat through the interface of the mould and the metals, the rate of solidification, and the characteristics of the mould material have a powerful impact on the quality of cast products. This study measures the influence of various mould substances on the mechanical characteristics of aluminium castings. Sand, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 9–18 Read article
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Influence of Epoxy-Based Thermally Conductive Polymer Composites on the Thermo-Hydraulic Performance of Finned Helical Coil Heat Exchangers Across Flow Regimes
Abstract: The use of polymer composites in heat exchanger applications has gained increasing attention due to their advantages in weight reduction, corrosion resistance, and design flexibility. However, their relatively low thermal conductivity compared to conventional metallic materials remains a key limitation for efficient heat transfer. In this study, the thermo-hydraulic performance of a finned helical coil heat exchanger is investigated with particular focus on epoxy-based polymer composites reinforced with thermally conductive …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 586–602 Read article
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Numerical Investigation of Influence of Rate of Rotation on Formation of Vapor Around Two Heated Circular Cylinders Immersed in Water Inside a Channel
Abstract: AbstractThe complexity problem of fluid flow and heat transfer over an array of circular cylinders are common in industrial applications of the fluid dynamics. The complex nature of the problem encountered in industry, gives rise to certain significant dimensions in the fluid dynamics theory. Some of them are the fluid flow interaction, interferences in flow and vortex dynamics which are typically found in compact heat exchangers, cooling of electronic equipment, …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 3, 2017 · pp. 14–25 Read article
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Experimental Analysis on Longitudinal Finned Tube Heat Exchanger and Numerical Investigation on Parameters that Accrue the Overall Heat Transfer Coefficient
Abstract: The presence of nanofluids ascertained great augmentation in heat transfer. Several works have been done so far to parameterize the properties of nanofluid in relation to augmentation of heat transfer. In conjunction to this, the present work focuses on heat transfer within a longitudinal finned tube heat exchanger with simulated employment of nanofluids. Experimentation is done on longitudinal finned tube heat exchanger and the results were compared with numerical simulations …
Published in Journal of Thermal Engineering and Applications · Vol. 3, Issue 1, 2016 · pp. 29–41 Read article
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Heat Transfer by Arc Welding for A Similar Material Joint
Abstract: Electric arc welding (EAW) is a traditional fabrication process used in wider domestic, commercial and industrial application. Welding is a joining of two materials with the application of heat at the molecular level with the application of heat and pressure. Many materials used for welding application for different joining process. Maraging steel is special steel used for production of different air-craft components. Maraging material is used for heavy tools, producing …
Published in Journal of Materials & Metallurgical Engineering · Vol. 15, Issue 2, 2025 · pp. 1–13 Read article
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Feasibility of Optimized Heat Source Assisted Combustion in Solid Rocket Motors
Abstract: Advances in rocket propulsion have a predominant role in space exploration developments. As an active chemical propulsion system, the efficiency of operations depends largely upon the nature of the combustion process and related energy transfer. Modern rockets are well known to epitomizes a distinct area of propulsion assisted by external thermal source(s)/rocket boosters. The presence of external heat source(s) encourages high possibility of fire risk/ hazards, which can adequately threaten …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 7, Issue 3, 2018 · pp. 12–25 Read article
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Experimental Performance Analysis and Temperature Distribution of Automobile Radiator Using Nano Fluids
Abstract: Internal combustion engine always needs to be maintained at the working temperature for good performance. The excessive generation of temperature affects the performance and reduces the efficiency of the engine. In order to remove the excess temperature, we need some cooling system in the automobile like, 1. Air cooling system and 2. Water cooling system. Air cooling system is used in two-wheelers and aero planes. The air takes heat from …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 1, 2020 · pp. 28–40 Read article
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Modelling the Reliability and unreliability of Selected Gas Plant Units
Abstract: This research demonstrates the reliability analysis of some units of some selected Gas Plant. In the study, unit plants of reboiler, stripper, cooling, compressor, acid dehydrated, heat transfer fluid, expander, and liquefaction were examined in terms of reliability and unreliability for a period of eight years. The results obtained revealed decrease in reliability value of unit plant with increase in period of utilization, whereas unreliability and cost increased with increase …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 2, 2022 · pp. 1–18 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