Thermal instability of a Closed Loop Pulsating Heat Pipe: Combined effect of orientation and filling ratio

Mameli, Mauro; Manno, V.; Filippeschi, Sauro; Marengo, Marco

doi:10.1016/j.expthermflusci.2014.04.009

Cited by 108 publications

(25 citation statements)

References 10 publications

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“…When the device is gravity assisted (vertical or bottom heated mode), the flow motion is more vigorous and the thermal performance is higher with respect to the case when the PHP is perfectly horizontal and gravity acceleration is always normal to the main flow path direction [6,7]. It is quite complex to build a PHP, which is gravity-independent on ground, even if some successful attempts of performance independent on orientation have been proposed with threedimensional layouts [8,9].…”

Section: Introductionmentioning

confidence: 95%

A pulsating heat pipe for space applications: Ground and microgravity experiments

Mangini

Mameli

Georgoulas

et al. 2015

International Journal of Thermal Sciences

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Section: Introductionmentioning

confidence: 95%

A pulsating heat pipe for space applications: Ground and microgravity experiments

Mangini

Mameli

Georgoulas

et al. 2015

International Journal of Thermal Sciences

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“…Due to the temperature difference occurs in the two section there is also change in pressure throughout the tube and due to this the phase change occurs. Due to generation and collapsing of bubbles it act as a pumping element for transporting the trapped liquid slug in a oscillating and translating fashion [6]. Due to this the direct consequence of pressure and temperature fluctuations with the fraction distribution.…”

Section: Easy To Design and Manufacturingmentioning

confidence: 99%

“…Due to this the direct consequence of pressure and temperature fluctuations with the fraction distribution. The causes of heat transfer are combination of sensible and latent heat transfer [6]. The sensible heat transfer has the major contribution in the overall heat exchange.…”

Section: Easy To Design and Manufacturingmentioning

confidence: 99%

Thermal Performance of Closed Loop Pulsating Heat Pipe with Titanium Oxide as Nanofluid

Mangidkar

Shinde

Deshmukh

et al. 2019

IJAEFEA

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Closed loop pulsating heat pipe (CLPHP) are heat transfer devices having thermo hydrodynamic coupling governing the internal performance. A wide range of necessary characterization has been done for the internal diameter, number of turns, working fluid, and inclination angle of the device. The working fluid employed is Titanium oxide nanofluid. Silver coating is done on Evaporator and Condenser section to improve the heat transfer rate. The objective of this experiment is to increase the heat transfer rate of CLPHP and to find out the thermal performance of CLPHP.

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“…Pulsating heat pipes (PHPs) are becoming a popular technology to address passive thermal management of nuclear, defence and space applications [5][6][7]. The PHP design variants proposed and studied to date, have the potential to meet many of the present and future specific requirements from electronics cooling [8,10], heat recovery [2,15] and passive cooling of reactor containments, to name a few.…”

Section: Introductionmentioning

confidence: 99%

A Low Cost, Flexible Pulsating Heat Pipe Technology

Der¹,

Marengo

Bertola

2018

Proceeding of 3rd Thermal and Fluids Engineering Conference (TFEC)

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A novel flexible pulsating heat pipe technology (FPHP) is presented, which enables fabrication of flexible, lightweight and low cost heat transfer devices using thermoplastic materials (polypropylene). A flexible and lightweight PHP is advantageous for space, aircraft and portable electronic applications where the device weight is crucial. Although the thermal performance of thermoplastics is usually poor, this technology enables the creation of composite thermoplastic materials having a significantly enhanced thermal conductivity. The basic concept is to sandwich a serpentine channel, which is cut out in a polypropylene sheet and contains a self-propelled gas-vapour mixture, between two transparent polypropylene sheets, bonded together by selective laser welding. This results into a heat transfer device with a large surface and very small thickness (approximately 1.5 mm), which makes it suitable for many existing and future applications where thermal management is not possible using existing technologies. The thermal performance of FPHPs was characterised for different heat input levels; local heat transfer coefficients were estimated by measurement of the heat fluxes and the wall temperatures at different positions in the FPHP. Results showed that the effective thermal conductance of the FPHP was nearly three times higher than that of the material constituting its envelope.

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Thermal instability of a Closed Loop Pulsating Heat Pipe: Combined effect of orientation and filling ratio

Cited by 108 publications

References 10 publications

A pulsating heat pipe for space applications: Ground and microgravity experiments

A pulsating heat pipe for space applications: Ground and microgravity experiments

Thermal Performance of Closed Loop Pulsating Heat Pipe with Titanium Oxide as Nanofluid

A Low Cost, Flexible Pulsating Heat Pipe Technology

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