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Pressure let-down gas expanders
In pressure let-down stations, natural gas pressure must be decreased to distribution network pressure. In this process, potential energy, available as high-pressure difference, is completely lost in the throttling process through a valve. This waste energy can be efficiently recovered to produce zero emission electricity through Exergy’s gas expander.
Exergy has designed a natural gas expander system that integrates into existing pressure let-down gas stations, serving both industries and residential buildings, to increase the efficiency and sustainability of the gas distribution system.
enhancing efficiency in gas operations WITH GAS EXPANDERS
The advantages of Exergy's solution:
1
HIGH CUSTOMIZATION
Depending on project requirements, Exergy can select the most suitable design to achieve the highest performance
2
TURNKEY SOLUTION
Supply of the complete package for revamping pressure let-down stations
3
LOW FOOTPRINT
A compact solution with minimal spatial requirements
4
HIGH EFFICIENCY
Increase in efficiency by up to 80%
5
HIGH RELIABILITY
Use of proven technology and equipment
Use of a traditional pressure let-down station always in parallel with Exergy’s gas expander
6
HIGH PROFITABILITY
Increased operational profitability thanks to additional power production
7
SUSTAINABILITY
Zero emission clean energy source
Circular model of energy recovery
How a gas expander system works
A heat exchanger for gas preheating is positioned upstream from the expander.
The pressure let-down station lamination valves are replaced with the expander (turbine).
A generator is coupled with the expander to produce electricity, while achieving, at the system outlet, the desired pressure and temperature for natural gas distribution.
