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Innovation That Drives Industries™
Calnetix FreeSpin In-line Turboexpander™
The Pressure-to-Power Solution
Innovation That Drives Industries®
FreeSpin In-line Turboexpander™
An oil-free, hermetically sealed solution for reducing pressure in gas processing and distribution systems while generating clean power.
The Calnetix FreeSpin In-line Turboexpander™ (FIT) provides a way to capture the energy wasted in pressure reduction.
Turboexpander systems with Calnetix’s Magnaforce™ motor generators extract kinetic energy from the pressure reduction at
the various stages of gas processing and distribution and allow for the generation of electricity with no added pollution.
The FreeSpin In-line Turboexpander system consists of an integrated high-speed turbine and high-efficiency generator that
runs on magnetic bearings in a hermetically sealed, lubrication-free unit, and provides more reliable performance.
Its high-speed Magnaforce™ motor generator has variable speed and load capabilities and provides greater power density in a
smaller footprint than conventional systems.
Cutaway model of the FreeSpin In-line Turboexpander™
Calnetix’s FreeSpin In-line Turboexpander™ System
StatorExpander Wheel
Rotor
Magnetic Bearings
Inlet Guide Vanes
Pressure Regulator
HighPressureGas In
JT Valve Low Pressure Gas Out
For more than a decade, Calnetix Technologies has been at the forefront of turboexpander technology, designing, implementing
and manufacturing some of the most innovative solutions for expanders across many industries. Calnetix was the first to bring a
self-contained, fully integrated expander solution for industrial waste heat recovery to market and subsequently licensed the
technology to GE and other OEMs.
1 The pre-heated high-pressure gas flows into the turboexpander.
2 The gas expands through the radial turbine wheel.
3 The low-pressure gas exits the FIT and is ready for delivery to residential and commercial users.
4 The energy wasted during the pressure reduction process is recovered by the FIT and converted to electrical power.
5 Any excess high-pressure gas not directed through the FIT is expanded by the conventional pressure regulator.
6 The produced electricity enters the Vericycle™ Bi-directional Power Electronics Unit, which can be programmed to specific power requirements.
How FreeSpin In-line Turboexpanders™ Work
Heater
1
2
3
4
5
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Innovation That Drives Industries™
FreeSpin Advantages, Applications and Specifications
Competitive Advantages • Fuel-free Power Generation
• Payback 1-2 years
• Proven Technology
> Millions of operating hours (cumulative)
> Over 400 fielded units
• Hermetically Sealed Module
> Eliminates dynamic seal systems
> No possibility of leaks between rotating parts
• High-Speed Permanent Magnet Generator
> Up to 25,000 RPM
> Variable speed and load capabilities
> 98% generator efficiency
> No gear box or associated lubrication system
Applications
• No User Serviceable Parts
• Small Footprint
• No Environmental Hazards
• High Power Density
• Magnetic Bearings
> Non-contact operation
> Low power consumption (vs. ball or fluid film)
> No lubrication, lubrication system or seals
> No maintenance for the life of the unit
> Monitors rotor imbalance
Air SeparationNatural Gas Pressure
Letdown Station Refineries
Gas Liquefactionand Distribution
Chemicals andPetrochemicals
Steam PressureLetdown Station
Geothermal PowerRecovery
Innovation That Drives Industries™
Technical Specifications
FreeSpin In-line Turboexpander™ Details
Rated Power:125 KW (Higher models available)
Speed:25,000 RPM
System Efficiency:Above 95%
With thousands of high-speed permanent magnet machines operating worldwide
and a world class technology portfolio, Calnetix can help drive your company’s productivity further.
Contact us today to see what the FreeSpin In-line Turboexpander™ can do for your business.
16323 Shoemaker Avenue | Cerritos, CA 90703 USA
Phone: +1.562.293.1660 | [email protected]
www.calnetix.com
© Calnetix Technologies, August 2019
Innovation That Drives Industries®
