High-temperature heat pipes are typically defined as heat pipes that operate between 400 and 1100°C. They are often used to build custom heat transfer devices for both high power throughput (1 to 100 kW range is typical) and precise temperature uniformity.
Fluid Options for High-Temperature Heat Pipes
- Cesium 300 to 600°C (572 to 1,112°F)
- Potassium 400 to 1000°C (752 to 1,832°F)
- NaK 500 to 800°C (932 to 1472°F)
- Sodium 500 to 1100°C (932 to 2,012°F)
ACT has experience with a variety of traditional and super alloys to withstand the high internal pressure associated with multi-phase metals. Some common envelope materials include Stainless Steel, Inconel Alloy 600, and Haynes. ACT will select the appropriate envelope for the working fluid and operating conditions.
- Temperature Calibration & Control; Isothermalizing furnace elements
- Nuclear power
- Solar Thermal
- Heat Engine Receivers (Steam, Stirling, Brayton, Rankine)
- Heat Exchangers
- Hypersonic wing leading edges
- Waste heat recovery
- Thermoelectric Generators
Why Choose ACT?
The alkali metals used in high-temperature heat pipes are extremely reactive to water or air, so achieving purity and containment is of the utmost importance. The ACT facility is one of the few commercial facilities set up to safely handle the construction of these types of heat pipes. We have the dedicated lab space, safety measures, and experienced personnel to make and deliver properly sealed vessels that will safely operate for a long lifetime.