Experimental investigation of the thermal characteristics of single-turn pulsating heat pipes with an extra branch

Sedighi, Erfan; Amarloo, Ali; Shafii, Mohammad Behshad

doi:10.1016/j.ijthermalsci.2018.08.024

Cited by 30 publications

(3 citation statements)

References 26 publications

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“…The length ratio of the evaporation section increase in the condensation section will help CLPHP start and also reduce thermal resistance. Sedighi et al [118,119] manufactured the additional branch PHP of a two-stage bubble pump in the evaporation section and compared the heat transfer performance of the additional branch PHP with that of the conventional FP-PHP. The bubble pump enhanced the flow cycle which resulted in less temperature fluctuation of the additional branch PHP.…”

Section: Heat Transfer Performance Improvement Of Pipeline Structurementioning

confidence: 99%

“…Work Medium/Structure Performance Improvement MPHP with cavity [112] Ethanol/With concave cavity ↓57% of thermal resistance Micro slot PHP [114] Water/Separation wall The maximum allowable input heat flux is increased by 90 times FPPHP [118,119] Water/Secondary bubble ↓11-20% of thermal resistance Yeboah et al [127] designed an experiment for testing the copper spiral OHP with ethanol, methanol and deionized water as work fluids. Ebrahimi et al [128] added interconnection channels in FP-PHP to enhance heat transfer and increased the working power range of FP-PHP.…”

Section: Php Speciesmentioning

confidence: 99%

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Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Xin

Zhu

2022

Energies

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The application of batteries has become more and more extensive, and the heat dissipation problem cannot be ignored. Oscillating Heat Pipe (OHP) is a good means of heat dissipation. In this paper, the methods to improve the energy conversion and flow thermal performance of micro-channel OHP are studied and summarized. The working principle, heat transfer mechanism, advantages and applications of PHP are also introduced in detail in this study. Proper adjustment of the micro-channel layout can increase the heat transfer limit of PHP by 44%. The thermal resistance of two-diameter channel PHP is 45% lower than that of conventional PHP. The thermal resistance of PHP under uneven heating can be reduced to 50% of the original. PHP pulse heating can alleviate the phenomenon of dryness. Different working fluids have different effects on PHP. The use of graphene nano-fluids as the work medium can reduce the thermal resistance of PHP by 83.6%. The work medium obtained by the mixture of different fluids has the potential to compensate for the defects while inheriting the advantages of a single fluid.

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Section: Heat Transfer Performance Improvement Of Pipeline Structurementioning

confidence: 99%

Section: Php Speciesmentioning

confidence: 99%

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Xin

Zhu

2022

Energies

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“…more than the capillary dimensions in hyper and micro gravity conditions and found it to be working even in horizontal position during micro-gravity period thus illustrating the possibility of use of oscillating heat pipe for space application. E. Sedighi et al [59] compared conventional PHP with a PHP with an extra branch attached to the evaporator section. This branch acted as a secondary bubble pump and it was observed that the later one has up to 51% better thermal performance than the former one.…”

Section: Impact Of Geometry/ Constructionmentioning

confidence: 99%

A Review on Pulsating Heat Pipes: Latest Research, Applications and Future Scope

Dave¹,

Dandale

Shrivastava

et al. 2021

Journal of Thermal Engineering

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Heat pipes have become popular as passive heat dissipation devices for many applications ranging from electronics to heat recovery in recent years. Pulsating Heat Pipe abbreviated as PHP is an exclusive category of a heat pipe which does have wick structure. It transfers heat between its evaporator and condenser sections due to the to and fro movement of working fluid caused due to the continuous change of phase taking place in it. Its operation involves combined hydrodynamic and thermodynamic effects causing the two-phase flow, making it difficult to fully understand it. Nevertheless, the PHPs have drawn the attention of investigators worldwide due to their simplicity in construction and a wide range of applications requiring high heat flux transfer. This review starts with a prologue of the attempts made by various investigators to explain the operation of PHPs through mathematical modeling. Later numerical simulations through Computational Fluid Dynamics of PHP performed by various investigators have been discussed. Review of latest experimental investigations performed on PHPs, is presented concisely in a tabular form. Novel concepts like the application of nanofluids, magnetic field and surfactant, applied for enhancing the performance of the PHPs have been discussed. At the end, applications of PHP and future scope have been discussed.

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The combined effects of filling ratio and inclination angle on thermal performance of a closed loop pulsating heat pipe

Markal

Aksoy

2020

Heat Mass Transfer

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Experimental investigation of the thermal characteristics of single-turn pulsating heat pipes with an extra branch

Cited by 30 publications

References 26 publications

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

A Review on Pulsating Heat Pipes: Latest Research, Applications and Future Scope

The combined effects of filling ratio and inclination angle on thermal performance of a closed loop pulsating heat pipe

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