Looking for manufacture for ammonia closed tube

[LouisH]

Hi, all. I'm Tao and new to this forum.

I need to find manufactures which have capability to build two ammonia filled closed tubes for cooling application. They are also called thermosyphon (non-wick heat pipe). I searched through related topics but had no result.
These two tubes are expected to work around 37°F. The heat dissipation is about 150W.
The length of these two pipes are both 2 meter, and inner diameter are 1/2 inch and 3/4 inch each.

Which company and suppliers can build this kind of pipe?

Thanks,
Tao

 

[chicopee]

You should try heat pump manufacturers that use ammonia as the medium in heat pump cycles.