Heat pipe for high temperature

**lufferwong** · Nov24-09, 11:53 PM

Hi! I wish to design a heat pipe for high temperature (up to 1300 degree Celsius). What material can I use? What about aluminum powder? Thanks.

**russ_watters** · Nov25-09, 12:41 AM

I'm not understanding what you want to do. I don't recognize your usage of the term "heat pipe" in this context and don't understand if you are talking about the material for the pipe or something going in the pipe.

**lufferwong** · Nov25-09, 01:42 AM

Thank you very much! I wish to transfer the heat from one chamber to another speedily. I wish to know what is the material that I could use as the conducting agent (in the tube). The heat pipe I am going to use is at 1250 degree Celsius. Thanks.

**Mech_Engineer** · Nov25-09, 10:29 AM

All it took was a quick search on Google to find what you're looking for: Thermacore High-Temperature heat Pipes

Industry Leading Thermal Performance
High heat flux: Lithium heat pipe operated at 126 kW/cm2

Working Fluids Include:
Cesium: 300°C to 600°C
Potassium: 400°C to 1000°C
Sodium: 500°C to 1200°C
Lithium: 900°C to 1700°C

**lufferwong** · Nov26-09, 06:04 AM

Thank you very much. I wish to know if aluminum could be used as conducting agent or not. Lithium is quick expansive. Kindly help.

**Mech_Engineer** · Nov27-09, 03:56 PM

For a heat pipe to operate, the fluid used in it has to be heated to it's boiling point. Since Aluminum's boiling point is 2519 degrees C, it won't work for the temperatures you're talking about.

**lufferwong** · Nov27-09, 08:43 PM

Thank you very much!