There are many precautions that you or your research team must take when you are working with vacuum chambers. There are things that you need to keep in mind, especially when you are working with high heat. One way that you can avoid any problems caused by high heat applications is to use water cooling. Let’s take a moment to examine just what water cooling is and how it relates to vacuum chamber applications.
Water has been used for centuries to draw out heat from a source that is desired to be cooler. This is often done by running the water directly over the object or source. The heat energy is transferred from the source into the water. If the source is hot enough, it can cause the water to evaporate into steam. If the water is not evaporated, it can be cooled and used again.
In the case of vacuum chambers, high heat can certainly be a problem if it is not handled properly. If you are running a high heat operation, it may be best if you use a chamber which utilizes a ‘cold wall’. This can be achieved by using a chamber with double walls, in between the walls there would be a channel through which cooling water would run.
If you are performing actions which result in a lower heat, but you would still rather keep it under control, you can use what is called a water trace. A water trace is simply a channel welded to the external chamber surface. Often times this water trace only covers a small portion of the surface of the chamber. But they are often placed according to the highest points of heat output. Therefore, the pattern of the water trace can be such that maximum cooling efficiency is achieved.
Water vacuum chambers should also be test thoroughly to ensure that they are safe and free of leakage. Stress testing and pressurized helium gas leak checking are the best ways to be sure that your water cooling chamber runs safely and efficiently.