Results 81 to 90 of about 163,261 (288)

Operational Optimization of Steam Turbine Systems for Time Series in Hourly Resolution: A Systematic Comparison of Linear, Quadratic and Nonlinear Approaches

Energies
Computer-aided modeling and mathematical optimization of energy systems are essential for improving operational efficiency and achieving emission reductions, particularly for steam turbine systems with part-load-dependent efficiency characteristics ...
Louisa Zaubitzer, Maurice Görgen, Frank Alsmeyer   +2 more
doaj   +1 more source

Research on Economic Optimization Scheduling of Park Integrated Energy System with Electricity-heat-cool-gas Load

Zhongguo dianli, 2020
Integrated energy system is an important way to achieve coordinated optimization between different energy systems. This paper firstly analyzes the four subsystems of electricity-heat-cool-gas, and constructs an economic optimization scheduling model for ...
Qiang SUN, Dian XIE, Qingyun NIE, Lihui ZHANG, Qian CHEN, Jiejun CHEN   +5 more
doaj   +1 more source

Transient modeling of extraction columns: Parameter estimation, uncertainty analysis, and operation optimization

AIChE Journal, EarlyView.
Abstract Despite extensive modeling efforts in extraction research, transient column models are rarely applied in industry due to concerns regarding parameter identifiability and model reliability. To address this, we analyzed uncertainty propagation from estimated parameters in a previously introduced column model and assessed identifiability via ill ...
Andreas Palmtag, Jannik Dohmen, Andreas Jupke   +2 more
wiley   +1 more source

Study on distributed and dynamic resource management for delay-sensitive sensor network

Tongxin xuebao, 2017
The delay-aware dynamic resource management problem was investigated in sensor network,with a focus on resource allocation among the sensors and power control along the time.By taking account of average delay requirements and power constraints,the ...
Wei LIU, Jun LIU
doaj   +2 more sources

Speciation, Structural Refinement, and Distribution of Ti Sites in Titanium Silicalite‐1 From 47/49Ti NMR Crystallography at 28.2 Tesla

Angewandte Chemie, EarlyView.
Titanium silicalite‐1 (TS‐1), used in industrial selective oxidation processes, depends on specific, yet still unresolved Ti sites, dispersed within the framework of an MFI‐zeolite. Applying high field (28.2 T) 47/49Ti NMR and 17O NMR spectroscopy for an array of TS‐1 catalysts enables the development of an NMR crystallography protocol and the ...
Christoph J. Kaul, Jonas Koppe, Lukas Lätsch, Michael Wörle, Sadig Aghazada, Jacob B. Holmes, Christina Wartmann, Mingji Zheng, Albrecht Berkessel, Trees De Baerdemaeker, Andrei‐Nicolae Parvulescu, Karsten Seidel, J. Henrique Teles, Alexander V. Yakimov, Christophe Copéret   +14 more
wiley   +2 more sources

Global optimization of mixed integer signomial fractional programing problems

Measurement + Control
The main issue in the present article is to investigate how to solve a mixed integer fractional signomial geometric programing problem (MIFSGP). In the first step to achieving this idea, we must convert a fractional signomial programing problem into a ...
Jaleh Shirin Nejad, Mansour Saraj, Sara Shokrolahi Yancheshmeh, Fatemeh Kiany Harchegani   +3 more
doaj   +1 more source

A Mixed Discrete PSO Algorithm for Synthesis of Mass Exchange Network with Incompatible Multicomponent

Chemical Engineering Transactions, 2017
A new mixed discrete particle swarm optimization (PSO) algorithm, i.e. DCH-PSO, was presented to solve mixed integer nonlinear programming (MINLP) problems.
S. Tao, M. Jiang, M. Liu, L. Ding
doaj   +1 more source

A multiscale Bayesian optimization framework for process and material codesign

AIChE Journal, EarlyView.
Abstract The simultaneous design of processes and enabling materials such as solvents, catalysts, and adsorbents is challenging because molecular‐ and process‐level decisions are strongly interdependent. Sequential approaches often yield suboptimal results since improvements in material properties may not translate into superior process performance. We
Michael Baldea
wiley   +1 more source

Mixed-Integer Optimization for Ship Retrofitting in Green Logistics

Mathematics
Maritime transportation plays a pivotal role in global trade and international supply chains. However, the sector is also a significant source of emissions.
Tianfang Ma, Xuecheng Tian, Yan Liu, Yong Jin, Shuaian Wang   +4 more
doaj   +1 more source

Stochastic optimization of Power‐to‐Methanol: Production cost sensitivity to process design vs. scheduling

AIChE Journal, EarlyView.
Abstract Under time‐varying electricity prices, the production costs of Power‐to‐X processes with intermediate storage can be reduced by simultaneously optimizing the process unit design and size with their scheduling and operation. However, the production cost sensitivity to optimal process design or scheduling is unclear, especially when several ...
Simone Mucci, Dominik Bongartz
wiley   +1 more source