Experimental study on the heat transport capability of micro-grooved oscillating heat pipe

Qu, Jian; Guan, Fengbo; Lv, Yaojie; Wang, Yalin

doi:10.1016/j.csite.2021.101210

Cited by 9 publications

(4 citation statements)

References 37 publications

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“…The maximum equivalent thermal conductivity is about 1977 W/(m•K) when the partition wall is located in the middle of the channel. Qu J et al [114] studied the heat transfer performance under vertical heating based on micro groove PHP and the maximum effective thermal conductivity of PHP was 41.8 kW/(m• • C) at 40% filling rate. Lim J et al [115] tested the influence of the channel arrangement on the plate MPHP under local heating.…”

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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“…Therefore, micro-grooved OHP is one of the effective modes to evaluate the performance heat transfer of the system. This device would enhance the allowable input heat flux by condensate the backflow to the evaporator when the filling ratio ranging from 30% to 60% [1]. Due to increase in filling ratio, heat added to the evaporator section leads to increase in temperature and pressure during the flow process.…”

Section: Introductionmentioning

confidence: 99%

Assessment and Prediction of Heat Transfer Performance of Oscillating Heat Pipe using Acetone

Prashanth¹,

Madhu²,

Ramanarasimha³

et al. 2022

ARFMTS

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Heat pipe is a device to enhance the performance of heat transfer, in particular to transition phase change process. The present investigation is carried out to measure the thermal performance of a closed loop acetone filled oscillating heat pipe with four turns is fabricated and tested. The test was carried out for the inner diameter of 1.7 mm copper tube by varying the acetone of 50%, 60%, 70% and 80% filler ratio with a heat input of 15 W to 40 W in steps of 5 W has been considered. The results shows that 80% acetone filled OHP provides the better thermal performance with an average minimum temperature difference between condenser and evaporator by 6.03%, heat transfer coefficient increased by 77% and the thermal resistance decrease by 43% respectively. The mathematical modelling was developed to predict the performance of the heat transfer. The model clearly shows that the independent variables are statistically significant with a p-value of 0.05 and the uncertainty analysis between the experimental and predicted values are less than 10%.

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“…So, the flow of working fluid in pulsating heat pipe originated due to the oscillation and phase change phenomenon of the working fluid. The PHP has various applications in microelectronics cooling, solar system and automotive technology (Qu et al 2021;Agha 2011).…”

Section: Introductionmentioning

confidence: 99%

Parametric Investigation of Closed Loop Pulsating Heat Pipe with Cerium Oxide Nanofluid

2022

JAFM

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In this study, a closed-loop pulsating heat pipe experimental investigation was done with 1% wt concentration of cerium oxide/EG-water (60-40) nanofluid. The unsteady state measurement was done to determine the effect of heat input, filling ratio and evacuation pressure on the thermal performance of the closed-loop pulsating heat pipe. The thermal performance is assessed in terms of temperature variation, thermal resistance and effective thermal conductivity of the pulsating heat pipe. The most appropriate behaviour is observed at 0.0799 bar evacuation pressure with 50% FR. The lowermost thermal resistance of 0.116598K/W was observed at 0.0799 bar evacuation pressure and 50% FR. The effective thermal conductivity value was observed as 5078.34 W/mK at 50% FR, 0.0799 bar for 80W heat input which is 12 to 13 times better than pure copper. The pulsation action inside the pulsating heat pipe is verified with the power spectral density analysis. This study supports the better performance of the heat pipe at 50% FR with a lower evacuation pressure of 0.0799 bar.

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Experimental study on the heat transport capability of micro-grooved oscillating heat pipe

Cited by 9 publications

References 37 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

Assessment and Prediction of Heat Transfer Performance of Oscillating Heat Pipe using Acetone

Parametric Investigation of Closed Loop Pulsating Heat Pipe with Cerium Oxide Nanofluid

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