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MAXIMUM_DISCHARGE_PRESSURE

MODELS / MAXIMUM_DISCHARGE_PRESSURE

Description​

MAXIMUM_DISCHARGE_PRESSURE sets the highest possible discharge pressure that a compressor can deliver. In reality, setting the maximum discharge pressure can be to avoid excessively high pressures which can be a safety concern on an installation.

Functionality​

This is an optional setting and is only supported for SINGLE SPEED COMPRESSORS, and only if the PRESSURE_CONTROL is DOWNSTREAM_CHOKE.

  • If MAXIMUM_DISCHARGE_PRESSURE has been defined and if any of the inputted discharge pressures exceeds the maximum value, a ValueError message will be raised.
  • If any of the input rates and suction pressures result in a discharge pressure which is above the MAXIMUM_DISCHARGE_PRESSURE, the suction pressure will be reduced until the calculations provide a discharge pressure below the maximum value (assuming an upstream choke can handle this).
  • The outlet stream will then be further choked from the MAXIMUM_DISCHARGE_PRESSURE to the target discharge pressure using the DOWNSTREAM_CHOKE pressure control.

Format​

MODELS:
  - NAME: <model name>
    TYPE: SINGLE_SPEED_COMPRESSOR_TRAIN
    FLUID_MODEL: <reference to fluid model>
    PRESSURE_CONTROL: <DOWNSTREAM_CHOKE>
    MAXIMUM_DISCHARGE_PRESSURE: <Maximum discharge pressure in bar>
    COMPRESSOR_TRAIN:
      STAGES:
        - INLET_TEMPERATURE: <inlet temperature in Celsius for stage>
          COMPRESSOR_CHART: <reference to compressor chart model>
    ...