Since its beginning in the early 1960s, the heat pipe technology has evolved into many different shapes and forms and has been used in numerous applications from computer cooling to spacecraft thermal control. The following pages contain information on our experience with various advanced forms of heat pipes:
- Water Heat Pipes
- Intermediate Temp Heat Pipes
- High Temperature Heat Pipes
- Vapor Chambers
- Pressure Controlled Heat Pipes
- Loop Heat Pipes
- Heat Pipe Loops
- Heat Pipe Life Tests
Heat Pipes for Thermal Management
Advanced Cooling Technologies is a leader in heat pipe products and technologies. ACT grew as a heat pipe company before adding thermal expertise across all thermal platforms. Nevertheless, today ACT is still manufacturing large quantities of heat pipes and heat pipe assemblies for a wide range of applications. In addition, ACT is a leader in developing new functionality and increased performance with emerging heat pipe technology.
Heat pipes are used across a wide range of markets and applications. ACT is the only US manufacturer that routinely delivers heat pipes for terrestrial electronics cooling (copper-water), on orbit satellite thermal management (aluminum-ammonia) and high temperature calibration equipment (liquid metal heat pipes). Navigate through the products section for more information on any of these highly reliable products.
If you are designing a thermal system and simply want to learn more about heat pipes, use the links in the Operation Section. If you still have questions- contact us, and an engineer will be in contact with you.
Constant Conductance Heat Pipes (CCHPs), are the most basic type of heat pipe. Heat is transferred by the evaporation and condensation of a working fluid:
- Vapor pressure drives fluid to the condenser
- Heat transfer from the condenser condenses vapor at the wick.
- Liquid returns to the evaporator by capillary forces generated in the wick
- High Thermal Conductivity (10,000 to 100,000 W/m K)
- Low Cost
- Shock/Vibration tolerant
For most terrestrial applications Cu-H2O and Cu-Methanol are used.
Learn more about aluminum-ammonia heat pipes used for spacecraft thermal control.
using liquid metal as the working fluid alows heat pipes to operate up to 1,000 degrees C.
Wrap around heat pipe heat exchangers create efficient operation to lower operating costs by pre-cooling incoming air.
Background physics to heat pipe operation including video that demonstrated the two-phase heat transport.
CCHPs VCHPs Loop Heat Pipes heat Pipe Loops Vapor Chambers ACT Heat Pipe Gallery
The amount of power (W) a heat pipe can move is determined by several variables. Learn about the various heat pipe limits that govern overall performance.
Use this tool to calculate a heat pipe's capability for your system. Works for copper-water heat pipes.
Learn the basics on how to size and model your heat pipes with our heat pipe design guide. You'll be able to integrate heat pipes into your project in no time!
Learn about the advantages, limitations, and trade-offs of various wick structures.
Fluid Selection / Compatability
Heat pipe fluids are determined primarily by the ambient conditions and thermodynamic properties of the fluid.