Enhancements added to gas network modeling
The time-varying module (TVM), unsteady-state module (USM), facilities management module (FMM), and cost of service module (COSM) for gas network modeling offer functionality enhancements and complete this firm’s migration of SynerGEE gas modules to the revitalized SynerGEE 4.x environment.
TVM and USM enhancements include the replacement of SynerGEE 3.x conditional and procedure chapters with logical operating scripts to expand functionality and control for automating model events. The new capability exposes virtually all modeling features, variables, and attributes for greater modeling flexibility. The scripting functionality has also taken these features to the traditional steady-state model as well.
USM offers fast and slow transient methods for advanced gas network studies. The fast transient method enables users to accurately simulate isothermal, time-varying events such as network line breaks and gas loss. The slow transient method eliminates the unsteady-state momentum calculation to simulate slower network events occurring over time.
TVM and USM offer a fully editable results plan that allows users interactively to define charting variables before and during a time-varying or unsteady-state analysis. The plan is prepopulated with standard modeling attributes and lets users add attributes, including facilities, nodes, system variables, and profile information at any time.
FMM allows users to synchronize SynerGEE models with GIS updates without rebuilding the model and losing valuable hydraulic data. Users can review changes spatially and selectively accept or reject individual or groups of changes to merge into the SynerGEE model.
COSM completes the new version’s offerings. COSM uses pipe cost and capacity along with customer peak day demand to calculate the cost of service in a gas distribution network. COSM traces a model from node to facility to node to provide insight on the financial assessment of a pipeline system.
Source: Advantica Inc., 600 Bent Creek Blvd., Mechanicsburg, PA 17050.
Turbine flowmeter offers accurate measurement
The Premier gas series turbine flowmeters promises accurate gas flow measurement at a cost less than typical mass or ultrasonic type flowmeters, the company says. Designed to measure flow through a pipeline, this flowmeter is suited for a variety of uses, including energy consumption, plant cost allocations, and general fiscal measurement.
The series features wide flow turndown ranges, multiple rotor assemblies for optimum performance, multiple coil outputs, and lower pressure drop compared with conventional turboflowmeters, the firm notes. Nist traceable gas calibrations with uncertainties to ±0.25% are available.
Source: Hoffer Flow Controls Inc., Box 2145, Elizabeth City, NC 27906.