Pulsating Heat pipe Only for Space (PHOS): results of the REXUS 18 sounding rocket campaign

Creatini, F.; Guidi, Grazia; Belfi, F.; Cicero, G; Fioriti, Davide; Prizio, D. Di; Piacquadio, S.; Becatti, Giulia; Orlandini, Guido; Frigerio, A.; Fontanesi, S; Nannipieri, Pietro; Rognini, M.; Morganti, N.; Filippeschi, Sauro; Marco, Paolo Di; Fanucci, Luca; Baronti, Federico; Mameli, Mauro; Manzoni, Miriam; Marengo, Marco

doi:10.1088/1742-6596/655/1/012042

Cited by 14 publications

(6 citation statements)

References 6 publications

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“…Even considering the inertial effects, it is therefore possible to test a PHP with an ID slightly higher than the critical one on ground [22,23], opening the frontier to a new family of PHPs that can be named, for sake of simplicity, "Space Pulsating Heat Pipe" (SPHP). Having a larger ID, the main advantage of the SPHP with respect to the conventional PHPs, is the possibility to dissipate higher heat power inputs in microgravity or to run with lower heat fluxes.…”

mentioning

confidence: 99%

Hybrid Pulsating Heat Pipe for space applications with non-uniform heating patterns: Ground and microgravity experiments

Mangini

Mameli

Fioriti

et al. 2017

Applied Thermal Engineering

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A hybrid Closed Loop Thermosyphon/Pulsating Heat Pipe with an inner diameter bigger than the capillary threshold is tested both on ground and in hyper/microgravity conditions. The device, partially filled up with FC-72, consists of an aluminum tube (inner diameter: 3 mm) bent into a planar serpentine with five curves at the evaporator. A transparent section closes the loop in the condenser zone, allowing fluid flow visualization. Five heaters are mounted alternatively on the branches, just above the turns and controlled independently, in order to investigate the effect of non-uniform heating configurations. On ground, where the device works as a thermosyphon, the non-uniform heating configurations promote the fluid net circulation in a preferential direction, increasing the thermal performance with respect to the homogeneous heating. Parabolic flights point out that during the 20 seconds of microgravity, the sudden absence of the buoyancy force activates an oscillating slug/plug flow regime, typical of the Pulsating Heat Pipes, allowing the device to work also without the assistance of gravity. Furthermore, peculiar heating configurations can shorten the stop-over periods and stabilize the pulsating two-phase flow motion.

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mentioning

confidence: 99%

Hybrid Pulsating Heat Pipe for space applications with non-uniform heating patterns: Ground and microgravity experiments

Mangini

Mameli

Fioriti

et al. 2017

Applied Thermal Engineering

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“…They made conclusion that microgravity tests for CLCHP are not necessary for the space application assessment. F Creatini et al [113] tested and successfully operated two CLPHPs, one with 3 mm and other with 1.6 mm diameter, on board of REXUS 18 sounding rocket with the aim to explore its performance over a rather long microgravity period (around 90s).…”

Section: Aerospacementioning

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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“…where ν VP -specific volume of the saturated vapour, m 3 /kg; ν L -specific volume of the diethyl ether on the liquid-vapour coexistence line, m 3 /kg. Substitute expression (10) in (8), and obtain the equation to calculate vapour quantity in the HP:…”

Section: Analytical Evaluationmentioning

confidence: 99%

“…The heat is thus transferred not only by the latent heat transfer liquid-vapour-liquid like in other types of heat pipes, but also by conductive heat transfer of the hot oscillating liquid plugs for cold walls in the condensation zone of loop HPs. This phenomenon is the reason of high heat transfer coefficient of loop HPs in comparison with other types of HPs [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Intensification of Heat Transfer Processes in the Low Temperature Short Heat Pipes with Laval Nozzle Formed Vapour Channel

Seryakov¹

2018

AJMP

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The results of flow studies of moist vapour in Laval-liked vapour channels of short linear heat pipes (HPs) are presented. The increase in heat transfer coefficient of short linear HPs, intended for creation the cooling systems of heatstressed designs of spacecraft is carried out by making the HPs vapour channel forms of the Laval-liked nozzle. Comparison of the heat transfer coefficients of short HPs with the standard cylindrical vapour channel and the channel, made in the Laval nozzle form with the equality of all dimensions, flat evaporator shows that the HPs with the Laval-liked nozzle vapour channel exceeds the heat transfer characteristics of the standard HPs with a cylindrical vapour channel under high thermal loads. The study of the flow and condensation in such shaped vapour channels of the short HPs at high thermal loads gives an opportunity to analyze in detail the advantages of using such HPs. Capacitive sensors are additionally installed in cooled top covers of the HPs, and electromagnetic pulses with a frequency of 100 kHz were supplied to them from the external generator. At heating the HPs evaporator, starting from a certain thermal power threshold value, electromagnetic pulses became modulated. It is related with the formations of the boiling process in the capillary-porous evaporator and large amount of vapour over it and its discontinuous distribution. An analytical and numerical evaluation are applied to study the duration of the occurring pulsations, and the analytical results are compared with numerical and experimentally obtained values of the pulsations periods.

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Pulsating Heat pipe Only for Space (PHOS): results of the REXUS 18 sounding rocket campaign

Cited by 14 publications

References 6 publications

Hybrid Pulsating Heat Pipe for space applications with non-uniform heating patterns: Ground and microgravity experiments

Hybrid Pulsating Heat Pipe for space applications with non-uniform heating patterns: Ground and microgravity experiments

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

Intensification of Heat Transfer Processes in the Low Temperature Short Heat Pipes with Laval Nozzle Formed Vapour Channel

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