Cryogel

A customer contacted us about insulating a machine designed to liquefy helium so that it can be transported throughout the machine. In order to do this, the helium must be cooled to about 4 Kelvin (-452⁰ F). Our job is to ensure that the components of the machine are insulated well enough to keep the helium at that temperature. This was by far the coldest application we have encountered so far, so the design of the jacket was going to require some special thought… More

Ammonia is a compound of nitrogen and hydrogen, or NH₃.  Because of Ammonia’s vaporization properties, it is frequently used as a refrigerant. NH3 boils at −33.34 °C (−28.012 °F) at a pressure of one atmosphere, Ammonia was commonly used before Freons (chlorofluorocarbons) became popular. Read more.