BN has designed and produced more than 50 different liquid nitrogen pumps. Some of the pumps utilize long shafts to minimize heat input and others are submersible for use in high-reliability applications where overall power is small or heat input is not crucial. Long shaft pumps with vacuum housings are typically used to circulate sub-cooled liquid nitrogen (e.g. high-temperature superconducting cables).
The BNCP-20-000 and BNCP-30-000 liquid nitrogen pumps (shown above and below at left) circulate liquid nitrogen in monochromatic cryocoolers currently used in synchrotrons all over the world.
The BNCP-64C-000 pumps shown below circulate sub-cooled liquid nitrogen in superconducting cables in Korea and Japan. These pumps utilize vacuum housings as sub-cooled liquid nitrogen pumps are typically installed in a cold box.
Perhaps one of our existing designs can fit your application and for more challenging or specific applications BN can design and produce a custom liquid nitrogen pump for your project.
