Browsing Institutt for kjemisk prosessteknologi by Journals "Computers and Chemical Engineering"
Now showing items 1-12 of 12
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A multifluid-PBE model for simulation of mass transfer limited processes operated in bubble columns
(Journal article, 2017)Modeling of reactive dispersed flows with interfacial mass transfer limitations require an accurate description of the interfacial area, mass transfer coefficient and the driving force. The driving force is given by the ... -
A New Termination Criterion for Sampling for Surrogate Model Generation using Partial Least Squares Regression
(Journal article; Peer reviewed, 2019)This paper proposes a new incremental sampling method for the generation of surrogate models based on the application of partial least squares regression (PLSR) as a termination criterion. Compared to existing incremental ... -
A Computationally Efficient Formulation of the Governing Equations for Unit Operation Design
(Peer reviewed; Journal article, 2021)A computationally-efficient numerical method that uses a Pseudo-Eulerian formulation (PEF) for the design calculation of unit operations is presented and validated. This method is applicable to any unit operation that can ... -
Demonstration of non-linear model predictive control of post-combustion CO2 capture processes
(Journal article; Peer reviewed, 2019)Nonlinear model predictive control applications have been deployed on two large pilot plants for post combustion CO2 capture. The control objective is formulated in such a way that the CO2 capture ratio is controlled at a ... -
Model predictive control for combined cycles integrated with CO2 capture plants
(Peer reviewed; Journal article, 2021)Flexible thermal power plants integrated with CO2 capture systems can balance the intermittent power generation of renewable energy sources with low-carbon electricity. Among these power systems, natural gas combined cycles ... -
Optimal operation and control of heat to power cycles: A new perspective from a systematic plantwide control approach
(Peer reviewed; Journal article, 2020)In this work, we use a plantwide control framework to systematically identify the control objectives, operational and environmental constraints, and degrees of freedom for a heat to power cycle with a drum, one pressure ... -
Plantwide control of an oil production network
(Peer reviewed; Journal article, 2020)In this paper, we consider Real-Time Optimization (RTO) and control of an oil production system. We follow a systematic plantwide control procedure. The process consists of two gas-lift oil wells connected to a pipeline-riser ... -
A regularized Moving Horizon Estimator for combined state and parameter estimation in a bioprocess experimental application
(Peer reviewed; Journal article, 2023)Due to the lack or high costs of measurement devices to monitor and control metabolites in microbial cultivation processes, state estimators are often required. These estimators depend on available on-line measurements and ... -
Steady-State Real-time Optimization using Transient Measurements
(Journal article; Peer reviewed, 2018)Real-time optimization (RTO) is an established technology, where the process economics are optimized using rigourous steady-state models. However, a fundamental limiting factor of current static RTO implementation is the ... -
Surrogate model generation using self-optimizing variables
(Journal article; Peer reviewed, 2018)This paper presents the application of self-optimizing concepts for more efficient generation of steady-state surrogate models. Surrogate model generation generally has problems with a large number of independent variables ... -
Systematic design of active constraint switching using se-lectors.
(Peer reviewed; Journal article, 2020)Selector logic is a simple and effective tool to switch between different controlled variables associated with change in active constraints. Selector blocks have been extensively used in the process control industry for ... -
Transient system-level performance and thermo-mechanical stress analysis of a solid oxide fuel cell-based power generation plant with a multi-physics approach
(Journal article; Peer reviewed, 2020)A solid oxide fuel cell-based (SOFC) power generation plant is analyzed with a view to performance as well as thermo-mechanical stresses. Emphasis is given to design and operation constraints of individual components as ...