Class ValveCapacityStrategy

java.lang.Object
neqsim.process.equipment.capacity.ValveCapacityStrategy
All Implemented Interfaces:
EquipmentCapacityStrategy
public class ValveCapacityStrategy extends Object implements EquipmentCapacityStrategy
Capacity strategy for valve equipment.

This strategy evaluates valve capacity based on multiple constraints including:

  • Valve opening percentage (Cv utilization)
  • Pressure drop across valve
  • Choked flow conditions
  • Control authority
Version:
1.0
Author:
NeqSim Development Team

  • Field Details

    • DEFAULT_MAX_OPENING

      public static final double DEFAULT_MAX_OPENING
      Default maximum valve opening for good control (%).
      See Also:

    • DEFAULT_MIN_OPENING

      public static final double DEFAULT_MIN_OPENING
      Default minimum valve opening for good control (%).
      See Also:

    • maxOpening

      private double maxOpening

    • minOpening

      private double minOpening

  • Constructor Details

    • ValveCapacityStrategy

      public ValveCapacityStrategy()
      Default constructor.

    • ValveCapacityStrategy

      public ValveCapacityStrategy(double minOpening, double maxOpening)
      Constructor with custom opening limits.
      Parameters:
      minOpening - minimum valve opening percentage
      maxOpening - maximum valve opening percentage

  • Method Details

    • supports

      public boolean supports(ProcessEquipmentInterface equipment)
      Checks if this strategy supports the given equipment.
      Specified by:
      supports in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to check
      Returns:
      true if this strategy can evaluate the equipment

    • getPriority

      public int getPriority()
      Gets the priority of this strategy.

      When multiple strategies support the same equipment, the one with higher priority is used. Default priority is 0. Use positive values for more specific strategies.

      Specified by:
      getPriority in interface EquipmentCapacityStrategy
      Returns:
      the priority value (higher = more preferred)

    • getName

      public String getName()
      Gets a descriptive name for this strategy.
      Specified by:
      getName in interface EquipmentCapacityStrategy
      Returns:
      strategy name

    • getEquipmentClass

      public Class<? extends ProcessEquipmentInterface> getEquipmentClass()
      Gets the equipment class this strategy handles.
      Specified by:
      getEquipmentClass in interface EquipmentCapacityStrategy
      Returns:
      the equipment class

    • evaluateCapacity

      public double evaluateCapacity(ProcessEquipmentInterface equipment)
      Evaluates the current capacity utilization of the equipment.

      Returns a value between 0 and 1+ where:

      • 0.0 = no load
      • 1.0 = at design capacity
      • >1.0 = over capacity
      Specified by:
      evaluateCapacity in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to evaluate
      Returns:
      capacity utilization as a fraction

    • evaluateMaxCapacity

      public double evaluateMaxCapacity(ProcessEquipmentInterface equipment)
      Evaluates the maximum capacity of the equipment.

      Returns the maximum capacity in the equipment's natural units (e.g., flow rate, power, duty).

      Specified by:
      evaluateMaxCapacity in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to evaluate
      Returns:
      maximum capacity

    • getConstraints

      public Map<String, CapacityConstraint> getConstraints(ProcessEquipmentInterface equipment)
      Gets all capacity constraints for this equipment.

      Returns a map of constraint name to constraint object. The constraints include both the current value and the design/limit values.

      Specified by:
      getConstraints in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to get constraints for
      Returns:
      map of constraint name to CapacityConstraint

    • getViolations

      public List<CapacityConstraint> getViolations(ProcessEquipmentInterface equipment)
      Gets the list of constraint violations for this equipment.

      Returns only the constraints that are currently violated (utilization > 1.0 or outside limits).

      Specified by:
      getViolations in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to check
      Returns:
      list of violated constraints

    • getBottleneckConstraint

      public CapacityConstraint getBottleneckConstraint(ProcessEquipmentInterface equipment)
      Gets the bottleneck constraint (highest utilization).
      Specified by:
      getBottleneckConstraint in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to evaluate
      Returns:
      the constraint with highest utilization, or null if none

    • isWithinHardLimits

      public boolean isWithinHardLimits(ProcessEquipmentInterface equipment)
      Checks if the equipment is operating within all hard limits.
      Specified by:
      isWithinHardLimits in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to check
      Returns:
      true if no hard limits are violated

    • isWithinSoftLimits

      public boolean isWithinSoftLimits(ProcessEquipmentInterface equipment)
      Checks if the equipment is operating within all soft limits (design values).
      Specified by:
      isWithinSoftLimits in interface EquipmentCapacityStrategy
      Parameters:
      equipment - the equipment to check
      Returns:
      true if no soft limits are violated

    • getMaxOpening

      public double getMaxOpening()
      Gets the maximum valve opening.
      Returns:
      maximum opening percentage

    • setMaxOpening

      public void setMaxOpening(double maxOpening)
      Sets the maximum valve opening.
      Parameters:
      maxOpening - maximum opening percentage

    • getMinOpening

      public double getMinOpening()
      Gets the minimum valve opening.
      Returns:
      minimum opening percentage

    • setMinOpening

      public void setMinOpening(double minOpening)
      Sets the minimum valve opening.
      Parameters:
      minOpening - minimum opening percentage