Review of heat transfer enhancement techniques in two-phase flows for highly efficient and sustainable cooling

Mousa, Mohamed H.; Yang, Cheng-Min; Nawaz, Kashif; Miljkovic, Nenad

doi:10.1016/j.rser.2021.111896

Cited by 58 publications

(10 citation statements)

References 157 publications

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“…Effective and reliable heat transfer devices are required for a substantial reduction in energy consumption for electronics cooling. Two-phase systems are widely used in thermal management applications [1]. However, standard active two-phase devices, which rely on the employment of auxiliary equipment, are not efficient from an energetic standpoint [2].…”

Section: Introductionmentioning

confidence: 99%

Infrared measurements of fluid temperature in a polymeric Pulsating Heat Pipe

Pagliarini,

Clemens,

Bozzoli

et al. 2024

J. Phys.: Conf. Ser.

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Pulsating heat pipes are two-phase passive heat transfer devices partially filled with a working fluid in saturation conditions. During operation, supplying heat to one end of the system (named evaporator) results in a local increase in temperature and pressure, which drives the fluid through a transport section (named adiabatic section) towards the cooled, opposite end (named condenser) for effective heat dissipation. The local thermo-fluid dynamic state of the working fluid is sometimes assessed by means of non-intrusive techniques, such as infrared thermography. In this case, the radiative properties of the systems in the infrared spectrum must be known a priori. Nevertheless, since pulsating heat pipes may be manufactured with different materials, wall thicknesses and channel geometries, the radiative properties of the walls and the confined flow are not always known or assessable by means of the available literature. Hence, the work proposes to design a straightforward calibration procedure for quantitative infrared fluid temperature measurements in a polymeric pulsating heat pipe charged with FC-72 and having unknown radiative properties. The emissivity and transmissivity of the walls and confined fluid are estimated with good accuracy. The results will allow repeatable and reliable fluid temperature measurements in future experimentations on the mentioned device.

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Section: Introductionmentioning

confidence: 99%

Infrared measurements of fluid temperature in a polymeric Pulsating Heat Pipe

Pagliarini,

Clemens,

Bozzoli

et al. 2024

J. Phys.: Conf. Ser.

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“…Water vapor condensation is an important phenomenon in nature and industry. 1 Due to the reduced energy barrier for vapor-to-liquid nucleation, condensation preferentially occurs on high-surface-energy substrates, 2 forming a thermally insulating liquid blanket, termed filmwise condensation. 3 To shed the liquid layer and enhance heat transfer, engineers have devised techniques for creating nonwetting surfaces to enable dropwise 4 or jumping droplet condensation.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Water vapor condensation is an important phenomenon in nature and industry . Due to the reduced energy barrier for vapor-to-liquid nucleation, condensation preferentially occurs on high-surface-energy substrates, forming a thermally insulating liquid blanket, termed filmwise condensation .…”

Section: Introductionmentioning

confidence: 99%

Coalescence-Induced Droplet Jumping for Electro-Thermal Sensing

Chettiar,

Ghaddar,

Birbarah

et al. 2023

Langmuir

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“…The fluid may be multiphase or single phase, determined by the purpose the heat exchanger is being used for. Heat exchangers find their applications in both domestic and commercial purposes, such as nuclear plants, power plants, heating, ventilation, and air conditioning (HVAC), and food processing plants [1]- [5]. Heat exchangers come in a variety of shapes and sizes, but the most common types are shell-and-tube, plate-and-frame, and scraped surface heat exchangers [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Thermal and Fluid Flow Analysis of Shell-and-Tube Heat Exchangers with Smooth and Dimpled Tubes

Fetuga¹,

Olakoyejo²,

Shote³

et al. 2022

J. ADV. ENG. COMPUT.

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This current work mainly focuses on the enhancement of the heat transfer and fluid flow characteristics of shell-and-tube heat exchangers by incorporating dimples on the smooth or conventional tubes. With the aid of the ANSYS (Fluent) commercial software package, Computational Fluid Dynamics (CFD) simulations under a steady-state condition were conducted on heat exchanger having a single shell and 12 tubes (with or without dimples), 50% baffle cut, 100mm baffle spacing and turbulent flow. The temperature, velocity, and pressure fields at the shell and tube zone in both cases are analyzed. The computational fluid dynamics results of the heat exchanger with dimpled tubes are compared with conventional (smooth) tubes. However, the results show that a shell and tube heat exchanger with dimpled tubes has a higher overall heat transfer coefficient than that of conventional (smooth) tubes. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

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Review of heat transfer enhancement techniques in two-phase flows for highly efficient and sustainable cooling

Cited by 58 publications

References 157 publications

Infrared measurements of fluid temperature in a polymeric Pulsating Heat Pipe

Infrared measurements of fluid temperature in a polymeric Pulsating Heat Pipe

Coalescence-Induced Droplet Jumping for Electro-Thermal Sensing

Thermal and Fluid Flow Analysis of Shell-and-Tube Heat Exchangers with Smooth and Dimpled Tubes

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