Multi-Evaporator Two-Phase Loop Cooling System

Bugby, D.; Miller, Terri; Baker, J. T.; Aerospace, Swales

doi:10.2514/6.2006-4060

Cited by 4 publications

(6 citation statements)

References 2 publications

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“…The HLHPS reported by Wrenn and Wolf (2008) and also by Bugby (2007) performed very well during experimental testing within the operating range of the system. One objective of this paper is understanding through modeling the thermal-fluid mechanisms which bound the performance envelope for HLHPS, such as operating under transients induced by the heat load variations.…”

Section: Introductionmentioning

confidence: 64%

“…The measured pressure drops and temperature distributions in the system were compared to and matched the predictions generated by a steady state Thermal Desktop TM model. Bugby (2007) reported testing of an ammonia HLHPS with four parallel miniaturized evaporators with porous Teflon wicks 6.4 mm outer diameter. The HLHPS withstood power cycling from 200 W to 50 W to 200 W and operated reliably with the heat flux of up to 30 W/cm 2 on the evaporator wall during 21 various tests.…”

Section: Recently Demonstrated Experimental Hlhpsmentioning

confidence: 99%

“…The modeled HLHPS parameters are summarized in Tables 1 through 3. The modeled HLHPS is of the same scale that the ST-8 system described by Bugby (2007) and also uses porous Teflon as the primary wick material. Modeled transient case.…”

Section: Hlhps Modeling Goals and Approachmentioning

confidence: 99%

“…The secondary evaporator with reservoir also provides for continuous sweepage liquid flow through the liquid cores of the main evaporators. The HLHPS operational concepts were described previously to a certain extent, for example by Bugby (2007) and by Wrenn and Wolf (2008), and are re-introduced below for the specific HLPS configuration modeled and presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Transient Modeling of Hybrid Loop Heat Pipe Systems With Multiple Evaporators

Khrustalev¹,

Cologer²

2010

Frontiers in Heat Pipes

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Hybrid Loop Heat Pipe Systems (HLHPS) are next-generation Loop Heat Pipe-type systems with multiple evaporators and only one reservoir colocated with a small secondary evaporator. HLHPS are capable of temperature-controlling heat sources distributed across the application system volume. In addition to multiple evaporators, HLHPS provide such benefits as compact packaging and high power and high heat flux levels compared to other capillary thermal control systems. This paper presents a transient model of a HLHPS with eight (8) main evaporators developed on the Thermal Desktop TM platform. The modeling results explain how these eight evaporators, cooling heat-dissipating components, can be kept inside a certain temperature range and provide general understanding of HLHPS transient operational regimes.

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Section: Introductionmentioning

confidence: 64%

Section: Recently Demonstrated Experimental Hlhpsmentioning

confidence: 99%

Section: Hlhps Modeling Goals and Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Transient Modeling of Hybrid Loop Heat Pipe Systems With Multiple Evaporators

Khrustalev¹,

Cologer²

2010

Frontiers in Heat Pipes

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show abstract

“…multi-evaporator loop heat pipe (ME-LHP), multi-evaporator capillary pump loop (ME-CPL) and multi-evaporator hybrid loop heat pipe (ME-HLHP), which were derived and developed from LHP, CPL, combined LHP and CPL, respectively. Bugby et al [2][3] illustrated the architectures, the distinctive and unique characteristics of such two-phase loop options. Among them, ME-LHP has distinct advantages such as high system heat transport capability, high pumping, self-starting capability, ability to cool multiple heat sources, heat load sharing among multiple evaporators, flexibility in system design and operation, and has therefore become attractive to the thermal control for spacecraft and high-power electronics applications.…”

mentioning

confidence: 99%