From 94dbce94c227a7f853b154758369412a970d9eb0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ole=20Petter=20L=C3=B8d=C3=B8en?= Date: Mon, 16 Sep 2024 12:58:57 +0200 Subject: [PATCH] docs: improve documentation around PRESSURE_CONTROL (#610) ECALC-606 --- .../variable_speed_compressor_train_model.md | 4 +++- docs/docs/about/references/PRESSURE_CONTROL.md | 8 +++++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/docs/docs/about/modelling/setup/models/compressor_modelling/compressor_models_types/variable_speed_compressor_train_model.md b/docs/docs/about/modelling/setup/models/compressor_modelling/compressor_models_types/variable_speed_compressor_train_model.md index c5d3ec0a8a..65c998d6bb 100644 --- a/docs/docs/about/modelling/setup/models/compressor_modelling/compressor_models_types/variable_speed_compressor_train_model.md +++ b/docs/docs/about/modelling/setup/models/compressor_modelling/compressor_models_types/variable_speed_compressor_train_model.md @@ -5,7 +5,9 @@ sidebar_position: 3 In this model all compressors in the train have the same speed, and the model is build on a forward model of the fluid properties/state where speed is a parameter. Then the speed is iterated until the discharge pressure of the -outlet is equal to the requested discharge pressure. +outlet is equal to the requested discharge pressure. If the resulting discharge pressure is not low enough to meet the +requested discharge pressure by iterating on speed only, an attempt is made to find a solution using the defined +[Fixed speed pressure control](/about/modelling/setup/models/compressor_modelling/fixed_speed_pressure_control/index.md) with the speed fixed at the minimum speed. This model only supports `User defined variable speed compressor chart`. diff --git a/docs/docs/about/references/PRESSURE_CONTROL.md b/docs/docs/about/references/PRESSURE_CONTROL.md index 42ba627aca..fa61c0db2a 100644 --- a/docs/docs/about/references/PRESSURE_CONTROL.md +++ b/docs/docs/about/references/PRESSURE_CONTROL.md @@ -1,7 +1,8 @@ # PRESSURE_CONTROL ## Description -`PRESSURE_CONTROL` is required when a compressor model is defined. This dictates how the compressor will be controlled, the method for pressure control are as follows: +The `PRESSURE_CONTROL` dictates how the compressor will be controlled when running on a fixed speed. The available +methods for pressure control are as follows: - DOWNSTREAM_CHOKE (default) - UPSTREAM_CHOKE @@ -9,6 +10,11 @@ - INDIVIDUAL_ASV_RATE - COMMON_ASV +`PRESSURE_CONTROL` is in use for the following types of compressor trains: +- [`Single speed compressor train model`](/about/modelling/setup/models/compressor_modelling/compressor_models_types/single_speed_compressor_train_model.md) +- [`Variable speed compressor train model`](/about/modelling/setup/models/compressor_modelling/compressor_models_types/variable_speed_compressor_train_model.md) +- [`Variable speed compressor train model with multiple streams and pressures`](/about/modelling/setup/models/compressor_modelling/compressor_models_types/variable_speed_compressor_train_model_with_multiple_streams_and_pressures.md) + Further description on how each pressure control method works can be found in [Fixed speed pressure control](/about/modelling/setup/models/compressor_modelling/fixed_speed_pressure_control/index.md) ## Format