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Grimwood compensation heaters save the day for Tas Gas Networks

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article image Grimwood compensation heater
Two 165kW Joule Thompson compensation heaters from compensation heaters were recently delivered to Tas Gas Networks at the Ulverstone Pressure Reduction Station. 
Grimwood Heating won the contract against international competition on the basis of superior design, low noise emissions and shorter lead time. The overall project was delivered for Tas Gas Networks by EPCM Consultants (NZ) Ltd.
Natural gas needs to be heated before pressure reduction to allow delivery at the right temperature. Too hot can damage pipeline coatings, and too cold can cause the steel to become brittle and equipment to ice up.
Gas delivery pressures and temperatures can vary significantly during the peak demand period, adding another level of complexity to the heating load equation as the demand varies through the peak.
The Tas Gas Networks installation had large industrial loads turning on and off, requiring efficient and controllable gas heating. Varying flow rates, pressures and temperature output also had to be taken into account in addition to ambient and ground temperatures that can also affect the gas supply temperature.
Grimwood compensation heaters come with superior control systems to monitor all these variables to result in delivery of precise temperature required after pressure reduction regardless of supply conditions and flow rate, as well as significant energy cost savings over conventional technology while delivering more precise temperature control.
Key features and benefits of Grimwood compensation heaters:

  • Small footprint
  • Virtually maintenance-free over the life of the installation
  • Emits low noise levels compared to other types of gas heating
  • Advanced control systems designed and built in-house
  • AEG thyristor power controller
  • Communication and integration interfaces include Profibus DPV1, Modbus RTU, Modbus TCP/IP, DeviceNet, CANopen, Profinet and EtherNet/IP
Grimwood heaters are designed and built in-house at their Villawood, NSW factory by highly skilled professional engineers, technicians and tradespeople. The heaters are fully compliant with, and certified to the IECEx Scheme as required by Australian Standards when installed in potentially explosive atmospheres.

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