ULT chiller uses nitrogen refrigerant

JAPAN: Mitsubishi Heavy Industries (MHI) has developed an ultra-low temperature brine chiller using nitrogen refrigerant.

The N-Bleath also features MHI’s compact electric turbo, which combines a high-performance impeller and an ultra-high speed motor, developed using aerodynamic performance and high-speed rotation technologies. 

N-Bleath utilises the air refrigerant cycle technology adopted by MHI over many years of research and development, allowing it to handle a wide range of ultra-low temperatures, from -40℃ to -100℃.

By adopting oil free bearings, the unit eliminates the need for periodic lubricating oil changes, significantly reducing maintenance requirements. In addition, because of the advanced thermal insulation, the turbo is capable of cooling into ultra-low temperature ranges below -100℃.