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Cryogenic expanders provide refrigeration to separate air gases
Cryostar started to build cryogenic expanders in 1973 driven by its engineers’ broad experience in thermodynamics, mechanics and high-speed machinery.
Cryostar has developed the world largest range of expanders for air separation and gained the confidence of major international gas companies.
More than 1400 reliable Cryostar turbo-machines operate worldwide. Company expertise includes hostile environments, hazardous areas, and the capability to customize equipment according to the most stringent customer specifications.
Cryostar promotes
 Continuous technical improvements to give the best products and services,
High efficiency to give the shortest payback times,
Innovative solutions to optimize your process,
Partnership yielding the best mutual benefits.
Oil brake turbines
Oil braked turbines are employed for small capacity applications where energy recovery is not economically justified.
Our range:
 ECO
Competitively priced turbines with short delivery times. It has been 20 years since Cryostar launched its industry leading oil-brake "ECO" (ECO = economical) type expansion turbines. These turbines boast a reference list of over 500 installed in nearly every part of the world including some of the most severe environments. Its success is attributed to the combination of high reliability, efficient performance and competitive cost.
Cryostar continues to offer more efficient small capacity expansion turbines , in line with market needs, due to standardised components and Cryostar's continuing innovation.
TP
These machines are oil-braked with a larger range of power and pressure than ECO type. These are four types covering a range of 50 kW to 300 kW to the shaft.
Intended for nitrogen and oxygen generator, TP turbines are adapted to each operation mode to reach an optimum efficiency. The oil systems are standardised to guarantee high reliability at low cost.
Compressor brake turbines TC
With the TC family, a compressor using the same shaft recovers shaft power.
A double or triple shaft seal arrangement ensures no lube-oil leakage to the atmosphere or the process gas.
A large range of cold production, pressure and flows are available from the TC120, about 50 kw to the TC600 up to 8 MW
Generator brake turbines TG and LTG
The generator loaded gas (TG) and liquid (LTG) expanders convert shaft power into electrical energy, which is returned to the electrical grid. Due to very high efficiency and constant shaft speed (stabilized by electrical frequency), these units are very reliable and energy efficient. Cryostar has a large range of flow and shaft powers in operation from 75 kW to 6 MW.
Gas turbines (TG)
The generator loaded gas (TG) expanders convert shaft power into electrical energy, which is returned to the electrical grid.
A large range of cold production, pressure and flows are available from the TG120, from 75kW to the TG600 up to 6MW.
Liquid turbines (LTG)
The generator loaded liquid (LTG) expanders convert shaft power into electrical energy, which is returned to the electrical grid.
A cryogenic liquid turbine reduces ASU energy consumption by 1.5-5%. A large range of cold production, pressure and flows are available from the LTG70 (100kW and more) to the LTG120 (up to 1000 kW)
Special applications
Cryostar has developed many expanders in cooperation with its customers to help them to optimize their processes. Some examples include:
TFC expander with cryogenic compressor and variable oil brake.
Download the datasheet - English (.pdf)
MTC expander with active magnetic bearings developed with S2M more than 20 years ago.
MTG expander with active magnetic bearings and high-speed generator.
Cryostar will help you to optimize your process.
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