Application example 1

Gas transfer station for a municipal gas network
In the gas transfer station of a Dutch city with a population of approx. 120,000 there is a Spilling gas expander with two-stage, 2-cylinder engine operating. This means that the relatively large difference between the pressure up and downstream from the station can be utilised with a high efficiency factor. 

The division of the gradients in two stages and so more moderate individual pressure ratios permits the use of heat sources with comparably low temperature levels to preheat the natural gas over an expansion stage. The heat exchangers are supplied with the waste heat from a paper factory and a CHP over the district heat grid. The heat supply is controlled depending on the discharge temperature after the expansion motor. 
gas expansion
Benefits for the customer

  • Revenue from feeding electricity into the public grid
  • Utilisation of waste heat from factory
Summary of system data

Gas preheating 
District heating, waste heat from a paper factory and a CHP 

Spilling unit
2-cylinder gas expander with 2-stage expansion

Inlet pressure and temperature at motor 37 barg
Outlet pressure and temperature at motor 4.5 barg
Max. gas throughput 10 600 Nm3/h 
Generator terminal output 442 kW
Gas expansion
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Application examples
Fields of application
Your benefits
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Application examples
Fields of application
Your benefits
Services and accessories
Application example
Gasexpansion engine
Power supply companies
Natural gas preheating with CHP unit

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