Pulsating &amp; amp; Oscillating Heat Transfer Devices in Acceleration Environments from Microgravity to Supergravity

Delil, A.A.M.

doi:10.4271/2001-01-2240

Cited by 15 publications

(7 citation statements)

References 26 publications

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“…Delil at al. [9][10][11][12] discuss the thermal-gravitational modeling and scaling of two-phase heat transport systems for spacecraft applications up to 12g. This investigation follows some previous works carried out at NLR on the same subject.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on a Closed Loop Pulsating Heat Pipe in Hyper-Gravity Conditions

Mameli

Manzoni

Araneo

et al. 2014

Proceedings of the 15th International Heat Transfer Conference

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A Closed Loop Pulsating Heat Pipe made of a copper tube (1.1mm/2mm I.D./O.D.) and filled with FC-72 has been tested on the Large Diameter Centrifuge (LDC) of the European Space Agency in Noordwijk at different hypergravity levels up to 20g, different heat input levels and different orientations with respect to the gravity direction (vertical bottom heated and horizontal position). Results shows that both in the horizontal and vertical orientation the device operation depends on the combined effect of gravity and heat input level. For the horizontal orientation, fluid stratification and the consequent thermal crisis occur at different acceleration levels depending also on the heat input power level and on the heating/gravity history. During the vertical operation the PHP thermal performance is slightly enhanced by the lower hyper-gravity levels (up to 3g at 50W, up to 4g at 70W and up to 6g at 100W) while two different local thermal crisis affect the PHP thermal behavior with the higher acceleration levels.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on a Closed Loop Pulsating Heat Pipe in Hyper-Gravity Conditions

Mameli

Manzoni

Araneo

et al. 2014

Proceedings of the 15th International Heat Transfer Conference

View full text Add to dashboard Cite

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“…The best range for the channel diameter is given in the survey of Delil [14] and its references [15][16][17], and in [18]:…”

Section: Experimental Set-upmentioning

confidence: 99%

Fabrication of polydimethylsiloxane (PDMS) pulsating heat pipe

Lin

Kang

2009

Applied Thermal Engineering

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“…1b). Figure 1 attemps to show the slug flow circulation of the working fluid for the two different configurations, but the fluid circulation for the open end configuration is rather difficult to simulate and to represent due to its chaotic behavior Usually, the closed loop configuration includes a check valve to constrain the fluid circulation in one direction [2][3][4][5][6] . PHPs can be applied in several thermal control problems, such as microelectronics cooling, but recently have gained interest in applications such as those for Space, Aeronautics and Surveillance systems used on the ground.…”

Section: Introductionmentioning

confidence: 99%

Pulsating Heat Pipes Used for Thermal Control of Electronics on Surveillance Systems

Riehl

Cachuté

2013

43rd International Conference on Environmental Systems

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Surveillance systems have proven to be important applications for high performance thermal control devices, especially the passive ones using heat pipe technology. With the growing need for heat dissipation presented by this type of system, usually hybrid solutions are designed, which include both liquid cooling and passive two-phase thermal control. This last one is usually applied when the heat source is located far from the heat sink and the use of liquid cooling or any other active thermal control system is not possible due to the lack of available space for integration. Since most of the surveillance systems being designed today require thermal control devices that operate under adverse orientation, some restrictions apply. Therefore, the technology that is currently used and disseminated for aerospace missions can find many other applications on surveillance systems for defense purposes. With severe restrictions regarding available space for integration of common thermal control devices, the design and application of pulsating heat pipes become the most indicated solution for the present investigation. Previous investigations have demonstrated that pulsating heat pipes configured as an open loop can operate on adverse conditions, promoting the heat transport from the source to the sink with good reliability. Based on this fact, this investigation is focused on presenting the thermal management of electronic components of a surveillance system being done by pulsating heat pipes configured as open loops. Despite the relatively high temperature difference between the heat source and sink, the open loop pulsating heat pipe is able to transportthe rejected heat from the electronic components to a remote heat dissipation area, while keeping their temperatures within the required range established by the project. The operation of the pulsating heat pipes have proven to be stable and reliable, meeting the project's expectations for thermal control. Nomenclature A = Heat transfer area (m 2 ) C calc = Calculated thermal conductance for the PHP (W/°C) C Cu = Solid copper bar thermal conductance (W/°C) k Cu = Thermal conductivity of copper (W/m°C) L eff = Effective length (m) Q = Heat load (W) η = Ratio of conductance T cond = Average temperature at the condenser (°C) T evap = Average temperature at the evaporator (°C)

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Pulsating & amp; Oscillating Heat Transfer Devices in Acceleration Environments from Microgravity to Supergravity

Cited by 15 publications

References 26 publications

Experimental Investigation on a Closed Loop Pulsating Heat Pipe in Hyper-Gravity Conditions

Experimental Investigation on a Closed Loop Pulsating Heat Pipe in Hyper-Gravity Conditions

Fabrication of polydimethylsiloxane (PDMS) pulsating heat pipe

Pulsating Heat Pipes Used for Thermal Control of Electronics on Surveillance Systems

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