Effect of using ethanol and methanol on thermal performance of a closed loop pulsating heat pipe (CLPHP) with different filling ratios

Rahman, Md. Lutfor; Salsabil, Zaimaa; Yasmin, Nusrat; Nourin, Farah Nazifa; Ali, Mohammad Yeakub

doi:10.1063/1.4958405

Cited by 9 publications

(2 citation statements)

References 3 publications

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“…Although statistics show that the optimal filling rate range is 0.35-0.65 (Han et al, 2016), the optimal filling rate is affected by other factors such as the physical properties of the working fluid, the inclination angle, the pipe diameter, and the input heat load, which cannot be uniformly defined. Rahman et al (2015b) studied the effect of open-loop PHP performance at different filling rates using deionized water and acetone as working fluids, and found that the performance reaches the best when the filling rate of acetone and water is 0.7 and 0.5 respectively. Verma et al (2013) concluded that the optimal filling rates of deionized water and methanol are 0.5 and 0.4, respectively, and methanol has a shorter startup time and a lower startup temperature.…”

Section: Operating Parametersmentioning

confidence: 99%

Passive Cooling Solutions for High Power Server CPUs with Pulsating Heat Pipe Technology: Review

2021

Front. Energy Res.

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Data centers are becoming more powerful and more integrated with the continuous development of smart cities, which brings us more technological convenience, but also generates a large amount of waste heat. At present, the efficient and green cooling scheme is one of the key researches and development points to ensure the stable and safe operation of power electronic devices and achieve energy saving and consumption reduction. As a branch of the heat pipe, the pulsating heat pipe is one of most promising passive cooling techniques among many candidates for its unique advantages such as small size, simple and compact structure, and high heat dissipation efficiency, but its application in data centers just begins, and there are few reports on research and implementation. Based on the introduction of the basic structure, working mechanism and outstanding advantages of pulsating heat pipes, this paper reviews in detail the researches on the factors affecting its performance, so as to evaluate the possibility of using pulsating heat pipes in data centers. Finally, the latest application and development of pulsating heat pipes applied to heat dissipation of high-power CPUs are summarized, which can provide a guidance for subsequent research and engineering application.

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Section: Operating Parametersmentioning

confidence: 99%

Passive Cooling Solutions for High Power Server CPUs with Pulsating Heat Pipe Technology: Review

2021

Front. Energy Res.

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“…Moreover, the effective thermal conductivity of the heat pipe is also determined and reported. Rahman et al [12] conducted another experiment with vertically orientated CLPHP has an increase in heat transfer coefficient and decrease in thermal resistance for methanol when compared to ethanol. Borkar and Pachgare [5] investigated on PHP with different heat inputs, working fluids, filling ratio and the number of turns.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of higher alcohols as self-rewetting fluids in closed loop pulsating heat pipes

Chidambaranathan

Rangaswamy

2021

THERM SCI

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Heat recovery plays an important role in all energy systems. The dissipation of heat is drastically increasing due to the advancement of electronic components. To cool the electronic components many heat recovery devices are introduced and out of which heat pipes play an important role. Pulsating Heat Pipe (PHP) is a new type of heat transfer device which was introduced by Akachi in mid-1990. It is used mainly in the cooling of electronic components because of its potential for removing high heat flux. An experimental study was made to investigate the heat transfer performance of PHP using self-rewetting fluids of high carbon alcohols. The latent heat of vaporization plays an important role in the heat transfer performance of PHP. It was observed that the high carbon alcohols showed a decrease in the latent heat of vaporization. The high carbon alcohols such as 1-Butanol, 1-Pentanol, 1-Hexanol, 1-Heptanol, and 1-Octanol were mixed with the deionized water to form a self-rewetting fluid. These self-rewetting fluids showed a unique behavior due to the inverse Marangoni effect. It was observed that the lower thermal resistance and higher heat transfer coefficient was obtained, especially in the dilute aqueous solution of 1- Octanol.

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Applications of pulsating heat pipe (PHP) as an efficient heat transfer device: a review of recent developments

Kumar,

Abraham

2024

Heat Mass Transfer

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Effect of using ethanol and methanol on thermal performance of a closed loop pulsating heat pipe (CLPHP) with different filling ratios

Cited by 9 publications

References 3 publications

Passive Cooling Solutions for High Power Server CPUs with Pulsating Heat Pipe Technology: Review

Passive Cooling Solutions for High Power Server CPUs with Pulsating Heat Pipe Technology: Review

Experimental investigation of higher alcohols as self-rewetting fluids in closed loop pulsating heat pipes

Applications of pulsating heat pipe (PHP) as an efficient heat transfer device: a review of recent developments

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