Articles with "double pipe" as a keyword



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Numerical simulation of nanofluid turbulent flow in a double-pipe heat exchanger equipped with circular fins

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Published in 2020 at "Journal of Thermal Analysis and Calorimetry"

DOI: 10.1007/s10973-020-09364-w

Abstract: In this study, the thermal and flow characteristics of a nanofluid were evaluated numerically in a circular finned double-pipe heat exchanger. A 3D CFD model was employed to study the effects of nanofluid properties and… read more here.

Keywords: heat exchanger; pipe heat; double pipe; heat ... See more keywords
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Numerical study of conjugate heat transfer in a double-pipe with exponential fins using DGFEM

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Published in 2017 at "Applied Thermal Engineering"

DOI: 10.1016/j.applthermaleng.2016.09.171

Abstract: Abstract The present work is aimed at studying the performance of exponential fin by numerical simulation of the conjugate heat transfer problem of fully developed laminar flow through the finned annulus of a double-pipe. The… read more here.

Keywords: conjugate heat; double pipe; heat transfer; pipe exponential ... See more keywords
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Enhancement of heat transfer rate with structural modification of double pipe heat exchanger by changing cylindrical form of tubes into conical form

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Published in 2017 at "Applied Thermal Engineering"

DOI: 10.1016/j.applthermaleng.2017.02.095

Abstract: Abstract In this paper, cylindrical tubes of a double pipe heat exchanger were changed into the conical tubes as an innovative design which causes improvement of thermal performance of heat exchanger without increment of its… read more here.

Keywords: heat exchanger; form; double pipe; geometry ... See more keywords
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Effects of CuO nano powder on performance improvement and entropy production of double-pipe heat exchanger with innovative perforated turbulators

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Published in 2021 at "Advanced Powder Technology"

DOI: 10.1016/j.apt.2021.06.020

Abstract: Abstract The objective of the present numerical study is to investigate the heat transfer enhancement, entropy generation, and thermal performance of turbulent nanofluids inside double-pipe heat exchangers equipped with novel perforated cylindrical turbulators. Effects of… read more here.

Keywords: entropy; perforated turbulators; pipe heat; double pipe ... See more keywords
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Improved PCM melting in a thermal energy storage system of double-pipe helical-coil tube

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Published in 2020 at "Energy Conversion and Management"

DOI: 10.1016/j.enconman.2019.112238

Abstract: Abstract This study proposes the use of a double-pipe helical-coiled tube as an innovative well-performing phase change material (PCM) containment design for latent heat thermal energy storage (LHTES) systems. A 3D numerical model considering the… read more here.

Keywords: tube; helical coil; double pipe; pcm melting ... See more keywords
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Performance enhancement of finned annulus using surface interruptions in double-pipe heat exchangers

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Published in 2020 at "Energy Conversion and Management"

DOI: 10.1016/j.enconman.2020.112710

Abstract: Abstract The present study investigates the thermo-fluid characteristics of a double pipe heat exchanger (DPHX) with split longitudinal fins (SLF) on the annulus side. The studied tubes with SLF are a modification of the conventional… read more here.

Keywords: fluid; pipe heat; double pipe; heat ... See more keywords
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Thermal Performance Evaluation of Circular-Stadium Double Pipe Thermal Energy Storage Systems

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Published in 2021 at "Journal of energy storage"

DOI: 10.1016/j.est.2021.102403

Abstract: ABSTRACT Thermal Energy Storage (TES) systems are employed in numerous practical applications, owing to their capability to solve the problems related to the reliability of thermal energy systems by using phase change materials (PCM). In… read more here.

Keywords: thermal energy; energy storage; double pipe; energy ... See more keywords
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Design and operation of a mobile fast pyrolysis system utilizing a novel double pipe fluidized bed reactor

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Published in 2021 at "Fuel Processing Technology"

DOI: 10.1016/j.fuproc.2021.107005

Abstract: Abstract A mobile fast pyrolysis system using a novel double pipe fluidized bed reactor with a capacity of 50 kg/h was designed and built. The structures of the main components, including the novel double pipe fluidized… read more here.

Keywords: fast pyrolysis; novel double; mobile fast; pyrolysis ... See more keywords
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Composite crystallization fouling characteristics of normal solubility salt in double-pipe heat exchanger

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Published in 2020 at "International Journal of Heat and Mass Transfer"

DOI: 10.1016/j.ijheatmasstransfer.2020.119883

Abstract: Abstract The fouling behavior of normal solubility pure salt (Na2SO4) and mixed salt (Na2SO4 and NaCl) in counter-current double-pipe heat exchanger was investigated. Through real-time monitoring of inlet and outlet temperatures of hot and cold… read more here.

Keywords: heat exchanger; sodium; pipe heat; double pipe ... See more keywords
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Modeling of heat transfer of supercritical water in helical finned double pipe

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Published in 2021 at "International Journal of Heat and Mass Transfer"

DOI: 10.1016/j.ijheatmasstransfer.2021.121754

Abstract: Abstract Supercritical water (SCW) is a promising fluid for achieving high thermal efficiency. In the present work, the SST k-ω turbulence model is employed to numerically simulate flow and heat transfer behavior of supercritical water… read more here.

Keywords: supercritical water; heat; double pipe; heat transfer ... See more keywords
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Measuring Local Crystallization Fouling in a Double-Pipe Heat Exchanger

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Published in 2019 at "Heat Transfer Engineering"

DOI: 10.1080/01457632.2018.1522084

Abstract: Abstract Although fouling is a problem varying in space and time, sizing and assessment of a process apparatus is almost always based on one single integral fouling resistance value. Furthermore, the integral fluid dynamic behavior,… read more here.

Keywords: crystallization fouling; heat exchanger; pipe heat; double pipe ... See more keywords