WEBINAR: Thermal Management: Heat Pipes, HiK™ Plates, and Vapor Chambers

Heat pipes, high conductivity (HiK™) plates, and vapor chambers are two-phase technologies that are often considered for electronics cooling. All three devices rely on the very high evaporation and condensation coefficients of two-phase fluids to reduce the ΔT between the source and the sink for a given power. When properly engineered for power and mission duration, all of these devices provide passive, reliable cooling.
This webinar will provide engineers with an understanding of the fundamental parameters for all three devices, including operating principles, thermal performance, thermal conductivity, weight, and cost. Selection criteria will also be presented to help select the optimum device for your specific application. Finally, methods for modeling will be discussed, both quick modeling to determine suitability, as well as more accurate modeling for detailed design.
For more information on the presented passive thermal technologies, please visit www.1-ACT.com.
0:00 Introduction
1:59 Presentation Outline
2:47 Introduction
3:33 Heat Pipe Principles
4:44 Heat Pipe Demo
6:24 Two-Phase Performance Limits
8:18 Spot Cooling Heat Pipe Uses and Benefits
11:24 High Conductivity HiK Uses & Benefits
14:23 Vapor Chambers
15:14 Vapor Chamber Selection Parameters
16:45 Cooling Device Comparison
17:50 Selection - Wrap Up
19:38 Heat Pipe Limits
22:00 Online Calculator Resource
22:32 Heat Pipe Calculator Example
23:29 Heat Pipe Modeling: Thermal Resistance Network
24:28 Basic Conduction Rod
26:09 Summary

[@chrisstanford3652]

Excellent talk, covers a “mysterious” topic with professionally and concisely 🤗

[@One-jz6sl]

Has anyone tried to make a pin-fin-heat-pipe heat sink by simply using heat pipes for what are otherwise solid metallic pins on a plate? How well can that work if you use a large number of heat pipes with a fan? I guess I will find out, I am working on the project now.

[@bharath96bharadwaj]

Interested to see how it goes!

[@lancelot3617]

I still don't understand the difference between a flat heat pipe and a vapor chamber, can anyone tell me? thank you very much.🙃

[@AdvancedCoolingTech]

A heat pipe can only be flattened so far before it impacts operation. A vapor chamber often utilizes a different internal wick structure than that of a heat pipe. Email us if you'd like to discuss your application: [e-mail]

[@keghnfeem4154]

A cup of water can be boiled away in about 20 minutes. What is the flow rate of water in a heat pipe form the hot end to the cold and back? Using water at 222 degrees Fahrenheit on the hot end, ten inch in length?

[@liuliu-vs6xh]

抽真空后加液30度开始沸腾循环。略知一二❤

[@johnhopkins6260]

vs. Peltier coolers??

[@AdvancedCoolingTech]

Peltier coolers are great for cooling components to sub-ambient temperatures, but the back side still gets really hot. ACT has had many projects where a peltier device is used to directly cool the component, with a heat pipe attached to the hot side to move the heat to a remotely located condenser.

[@daydreaminginventor-k8957]

heat pipe requres no power source?

[@AdvancedCoolingTech]

@@daydreaminginventor-k8957 No, these are passive heat transfer devices. They do have a limit of passively working against gravity of about 12".

[@daydreaminginventor-k8957]

@@AdvancedCoolingTech i was acctually replying to the other guy on Peltier, i mean i totally think that heat pipe is much better since it requires no power source, by the way this tech is used on high altitude railway foundation to freeze soil so that it does not move ....

[@daydreaminginventor-k8957]

@@AdvancedCoolingTech sorry , 12 inches? or Feet? i am thingking about using heat pipe to move heat from top to lower part about 2 Meters ,