High-Temperature Heat Pipes for Waste-Heat Recovery
Copyright policy )High-Temperature Heat Pipes for Waste-Heat Recovery
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.
- Los Alamos National Laboratory United States
- University of North Texas United States
Refractory Metals, Ceramics, Design, Consumption, Performance, Equipment, Tungsten, Alkali Metals, Heat Recovery Equipment, Fabrication, Transition Elements 320304* -- Energy Conservation, 420200 -- Engineering-- Facilities, Information, 42 Engineering, & Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization, 32 Energy Conservation, Very High Temperature, Silicon Carbides, Data, Heat Pipes, Silicon Compounds, Sodium, & Techniques, Elements, Carbon Compounds, Numerical Data, Metals, And Utilization, Experimental Data, Carbides, Heat Pipe Wicks
Refractory Metals, Ceramics, Design, Consumption, Performance, Equipment, Tungsten, Alkali Metals, Heat Recovery Equipment, Fabrication, Transition Elements 320304* -- Energy Conservation, 420200 -- Engineering-- Facilities, Information, 42 Engineering, & Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization, 32 Energy Conservation, Very High Temperature, Silicon Carbides, Data, Heat Pipes, Silicon Compounds, Sodium, & Techniques, Elements, Carbon Compounds, Numerical Data, Metals, And Utilization, Experimental Data, Carbides, Heat Pipe Wicks
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