High temperature heat pipes for waste heat recovery

Conference · Tue Jan 01 04:00:00 EST 1980

DOI:https://doi.org/10.2514/6.1980-1505· OSTI ID:5381932

Merrigan, M A; Keddy, E S

Operation of heat pipes in air at temperatures above 1200/sup 0/K has been accomplished using SiC as a shell material and a chemical vapor deposit (CVD) tungsten inner liner for protection of the ceramic from the sodium working fluid. The CVD tungsten has been used as a distribution wick for the gravity assisted heat pipe through the development of a columnar tungsten surface structure, achieved by control of the metal vapor deposition rate. Wick performance has been demonstrated in tests at approximately 2 kW throughput with a 19-mm-i.d. SiC heat pipe. Operation of ceramic heat pipes in repeated start cycle tests has demonstrated their ability to withstand temperature rise rates of greater than 1.2 K/s.

• Research Organization: Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5381932
• Report Number(s): LA-UR-80-1481; CONF-800712-2
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
42 ENGINEERING
420200 -- Engineering-- Facilities
Equipment
& Techniques
ALKALI METALS
CARBIDES
CARBON COMPOUNDS
CERAMICS
DATA
DESIGN
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
FABRICATION
HEAT PIPE WICKS
HEAT PIPES
HEAT RECOVERY EQUIPMENT
INFORMATION
METALS
NUMERICAL DATA
PERFORMANCE
REFRACTORY METALS
SILICON CARBIDES
SILICON COMPOUNDS
SODIUM
TRANSITION ELEMENTS
TUNGSTEN
VERY HIGH TEMPERATURE