• Home
  • Cryodynamic Products

Cryodynamic Products

Continuous advances in cryogenic technology for liquefied gas applications.

For over 40 years, Cryodynamic Products has been the premier manufacturer of both standard and custom cryogenic pumps and expanders, delivering continuous advances in equipment design and technology to  customers around the world. With thousands of installations worldwide, Ebara Elliott Energy's Cryodynamics® business is the recognized global leader for submerged electric pumps and expanders in liquefied gas applications.

Cryodynamic Products provides onshore and offshore solutions for liquefaction, storage, and regasification for liquefied gas carriers, FSRU, FLNG, FSU, LNG bunkering, and LNG fueling applications. We developed the first submerged cryogenic expander in 1997, the first two-phase expander in 2001, the first two-phase tandem installation in 2008, and the first floating application in 2011.

In addition to our full line of submerged cryogenic pumps and expanders, we offer complete global service packages including parts, service engineering, training, and customized research.

Our new state-of-the-art cryogenic testing facility, which was dedicated in October 2021, is like no other cryogenic testing facility anywhere in the world. Learn more about it below and how it is contributing to Ebara Elliott Energy's sustainability objectives.

Cryogenic Pumps
Cryogenic Expanders
Impulse-Type Two-Phase Cryogenic Expander
Variable Pitch and Hub Helical Inducer
Cryogenic Pump and Expander Repairs
Cryogenic Pump and Expander Repairs in Asia Pacific
Cryogenic Testing Facility



 

Aggressive Fluids (like Ammonia)

ammonia pumps

This innovative design for a submerged electric motor pump is implemented for transferring aggressive refrigerated liquids (like ammonia). Several unique design features are incorporated since most of these liquids are known for their challenging chemical characteristics such as corrosiveness to copper.

The motor is encased in a sealed housing that has nitrogen gas flowing into it from the top of the tank or suction vessel to keep the motor dry and inert, thereby providing a safe environment. The enclosed motor is cooled by the pumped liquid surrounding the motor housing and by fan blades fitted to the motor rotor. The motor rotor is supported by two deep groove bearings lubricated with low temperature grease. 

 
ammonia pump drawingThe hydraulic (wet) end with the impeller(s) and inducer is driven by a magnetic coupling located between the motor and wet end upper shaft. The motor side half of the magnetic coupling is housed inside the sealed motor housing adjacent to the stainless steel membrane. This allows the wet end to be driven while keeping the fluid out of the motor.

The ACC/ACR type can be installed inside a suction vessel much like an ECC pump, or into a storage tank in the same fashion as an ECR pump. It can also be installed inside the cargo tanks for chemical tankers.