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PowerGen Stirling Engines
PowerGen Remote Power Generators combine high efficiency Free
Piston Stirling Engine (FPSE) technology with advanced combustion capabilities
to efficiently transform propane, well gas and natural gas into electricity.
The external combustion engine and automatic control system enable the generator
to produce steady, dependable power from 600W up to 5.6kW. PowerGen
Stirling Engines are manufactured by Qnergy.
Contact us today to get started on your next project!
740-964-4000 (M-F: 8am-5pm EST)
Email Us
Free-Piston Stirling Engine Technology
Qnergy's Free-Piston Stirling Engine (FPSE) generator can transform virtually
any heat source into electricity. Once heat is applied to the FPSE the
heat exchangers maintain a temperature differential across the engine causing
the helium to shuttle back-and-forth inside the engine, expanding and
contracting. The oscillating helium drives the linear reciprocating motion
of the piston, which by means of an integral linear alternator, directly
converts the reciprocating motion of the piston into electrical power.
The Qnergy engine has fewer moving parts than traditional kinematic
Stirling engines, and no direct-contact points that cause wear and
require lubrication. The Qnergy engine is truly a maintenance-free
technology that offers long-life performance, two key features that make it
an ideal power source.
Free-Piston Stirling Engine Technology (JPG)
Stirling Engines vs. Diesel/Gas Generators
Diesel/gas generators are widely used for
prime & backup power generation for
critical applications due to their high power, mass market availability and low
initial cost. What's often overlooked is the on-going maintenance needs
and associated costs to keep diesel/gas generators operational. You have
to change the oil every few hundred hours, rebuild the engine or even
replace/scrap entirely after just a few years. In addition diesel/gas
generators are noisy, have dirty emissions and are prone to theft. By
comparison gas/diesel generators typically have a design life of 1,000-3,000
hours whereas the PowerGen Stirling Engine has a design life of 60,000+ hours!
PowerGen Advantages
PowerGen Stirling Engines have several advantages over conventional
diesel/gas generators.
Multiple Fuel Sources

The PowerGen can operate seamlessly with a variety of fuel supplies
including: propane, natural gas, ethane, bio-gas, as well as multiple
associated gas streams of differing caloric values.
Multiple Output Config.

By means of its flexible and modular design, the PowerGen can be
tailored to provide a broad range of power output (600W, 1.2kW, 1.8kW,
5.6kW) and output voltages (120/240
VAC, 24/48VDC) to meet the electrical requirements of each specific site
load.
ZERO Maintenance

The PowerGen has fewer moving parts than traditional kinematic
Stirling Engines and no direct contact points that cause wear and
require lubrication. The PowerGen is truly a maintenance-free
technology and offers long-life performance, two key features that make
it an ideal power source!
Easy Integration

The PowerGen can easily be integrated with new or existing power
infrastructure including batteries, solar & wind, solar charge
controllers and much more! Dry contacts, relays and MODBUS provide
easy interfacing. Web-based remote monitoring is also available.
60,000+ Hour Design Life

Free piston Stirling Engine technology was pioneered by NASA in
space. Unlike other technologies there is no reliability reduction
for multiple start-stops or continuous operation. Design life for
commercial applications is conservatively estimated at 60,000 hours with
zero maintenance!
Heat Recovery (Optional)
The PowerGen can be provided with an optional heat recovery
interface to capture and use hot-air heat for heating of equipment
houses/cabinets. The heat-supply ratio is 2.5-3.5x that of the
electrical power with controllable supply temperatures.
PowerGen Technical Specs
-
Output Power: 600W (PowerGen 600 Series)
- Output Power: 1.2kW (PowerGen 1200 Series)
- Output Power: 1.8kW (PowerGen 1800 Series)
- Output Power: 5.6kW (PowerGen 5650 Series)
- Nominal Operating Voltage: 120/240 VAC
- Operating Temperature: -13°F to 122°F
(Cold Temperature pkg available down to -40°F)
- Weight: 866 lbs
- Dimensions: 69.4"L x 28.1"W x 57.2"H
- Recommended Pad Dimensions: 72"L x 36"W
- Recommended Pad Base: Level Gravel, Concrete, Rail Ties
- Fuel Consumption (Propane Max) - PowerGen 600 Series (600W):
4.3 gal/day
- Fuel Consumption (Natural Gas Max) - PowerGen 600 Series (600W):
550 ft³/day
- Fuel Consumption (Propane Max) - PowerGen 1200 Series (1.2kW):
7.2 gal/day
- Fuel Consumption (Natural Gas Max) - PowerGen 1200 Series
(1.2kW): 935 ft³/day
- Fuel Consumption (Propane Max) - PowerGen 1800 Series (1.8kW):
10 gal/day
- Fuel Consumption (Natural Gas Max) - PowerGen 1800 Series
(1.8kW): 1,300 ft³/day
- Fuel Consumption (Propane Max) - PowerGen 5650 Series (5.6kW):
44.4 gal/day
- Fuel Consumption (Natural Gas Max) - PowerGen 5650 Series
(5.6kW): 3,964 ft³/day
- Fuel Pressure Range (Propane): 2-10 PSI
- Fuel Pressure Range (Natural Gas): 3-50 PSI
- Cabinet Electrical Rating: IP54
- Certification: cETLus (UL2200), (CSA
C22.2#100/C22.2#14)e3w
- Generator Design Life: 60,000+ Hours (No start/stop limitations)
PowerGen Applications
The PowerGen Stirling Engines are a great fit for remote wayside
rail signaling and telecommunications applications (control points,
interlockings, remote sites, telecom stations, etc.), due to their rugged and
robust construction, extremely long life and little to no maintenance needs.
Prime Power (Off-Grid)

The PowerGen can be used as a prime power generator for remote
locations where utility power connection is unavailable and/or too
costly. The PowerGen is capable of cycle charging or running
continuously for 60,000+ hours with no start/stop limitations.
Backup Power

The PowerGen can be used as a backup power system for locations with AC
utility power connection. A transfer switch can signal the PowerGen to
start and provide power during an AC power outage. Unlike some power
technologies, the PowerGen has no start/stop cycle limitations.
Solar Hybrids

The PowerGen is well suited to provide supplemental power to new or
existing Solar Power Systems. During periods of insufficient solar
production (ex: winter months), the PowerGen is signaled to start and
provide power to charge batteries. This setup also conserves fuel
during summer.