Performance characteristics of recently developed high-performance heat pipes

Journal Article · Sun Jan 01 04:00:00 EST 1995 · Heat Transfer Engineering

DOI:https://doi.org/10.1080/01457639508939844· OSTI ID:94123

Schlitt, R ^[1]

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1. Daimler-Benz Aerospace AG, Bremen (Germany)

For future space projects such as Earth orbiting platforms, space stations, but also Moon or Mars bases, the need to manage waste heat up to 100 kW has been identified. For this purpose large heat pipe radiators have been proposed with heat pipe lengths of 15 m and heat transport capabilities up to 4 kW. It is demonstrated that conventional axially grooved heat pipes can be improved to provide 1 kWm heat transport capability. Higher heat loads can be handled only by high-composite wick designs with large liquid cross sections and circumferential grooves in the evaporator. With these high-performance heat pipes, heat transfer coefficients of about 200 kW/m{sup 2}K and transport capabilities of 2 kW over 15 m can be reached. Configurations with liquid fillets and axially tapered liquid channels are proposed to improve the ability of the highly composite wick to prime.

• Sponsoring Organization: USDOE
• OSTI ID: 94123
• Journal Information: Heat Transfer Engineering, Journal Name: Heat Transfer Engineering Journal Issue: 1 Vol. 16; ISSN 0145-7632; ISSN HTEND2
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
AUGMENTATION
CAPACITY
COOLING SYSTEMS
DESIGN
HEAT PIPES
PERFORMANCE
SPACE VEHICLES