Preface of the “Symposium on State of the Art of Mathematical Modeling, Numerical Analysis, Optimization and Control of Green Energy Systems and Clean Environment”

2016 ◽  
Author(s):  
Alexandru Dumitrache ◽  
Florin Frunzulica ◽  
Daniel-Eugeniu Crunteanu
Keyword(s):  
Mathematical Modeling ◽  
Numerical Analysis ◽  
State Of The Art ◽  
Energy Systems ◽  
Green Energy ◽  
Clean Environment ◽  
Optimization And Control ◽  
And Control

scholarly journals A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 400 ◽  
Author(s):  
Zelin Nie ◽  
Feng Gao ◽  
Chao-Bo Yan
Keyword(s):  
Optimization Model ◽  
Air Conditioning ◽  
State Of The Art ◽  
Hvac Systems ◽  
Practical Significance ◽  
Hvac System ◽  
Bilinear Model ◽  
Optimization And Control ◽  
And Control ◽  
Slow Timescale

Reducing the energy consumption of the heating, ventilation, and air conditioning (HVAC) systems while ensuring users’ comfort is of both academic and practical significance. However, the-state-of-the-art of the optimization model of the HVAC system is that either the thermal dynamic model is simplified as a linear model, or the optimization model of the HVAC system is single-timescale, which leads to heavy computation burden. To balance the practicality and the overhead of computation, in this paper, a multi-timescale bilinear model of HVAC systems is proposed. To guarantee the consistency of models in different timescales, the fast timescale model is built first with a bilinear form, and then the slow timescale model is induced from the fast one, specifically, with a bilinear-like form. After a simplified replacement made for the bilinear-like part, this problem can be solved by a convexification method. Extensive numerical experiments have been conducted to validate the effectiveness of this model.

Modeling, optimization, and control of ship energy systems using exergy methods

Energy ◽  
2020 ◽  
Vol 191 ◽  
pp. 116542 ◽  
Author(s):  
Eddy H. Trinklein ◽  
Gordon G. Parker ◽  
Timothy J. McCoy
Keyword(s):  
Energy Systems ◽  
Optimization And Control ◽  
And Control

scholarly journals Solar energy-assisted frost prevention in horticulture applications: integrated framework and parametric CFD modeling

2018 ◽  
Author(s):  
Ercan Atam ◽  
Se-Woon Hong
Keyword(s):  
Solar Energy ◽  
System Optimization ◽  
Green Energy ◽  
Integrated System ◽  
Electricity Production ◽  
Cfd Modeling ◽  
Cfd Model ◽  
Thermal Dynamics ◽  
Optimization And Control ◽  
And Control

Prevention of frost in horticulture is important, but challenging, and its realization,especially using green-energy sources, will have a huge societal impact.In this paper, first we suggest an integrated solarphotovoltaics (PV)-assisted framework where solar energy will be used as a secondary application for frostprevention (the primary application is electricity production for grid). Optimal design and operation ofthe suggested integrated system require detailed thermal modeling of air dynamics in the orchard,integrated system optimization and control tasks. Second, in this paperwe address the first task above: development of a novel, sophisticated parametric computational fluid dynamics (CFD)model for orchard air thermal dynamics for different orchard parameters (such as fruit type, climate, the number of trees,their sizes, distance between them, etc.) and boundary/initial conditions.Finally, the use of developed parametric CFD model is demonstrated through a case study to calculate the minimal thermalenergy required to prevent frost under different frost levels in a test apricot orchard located in Malatya, Turkey, which isthe world capital for dry apricot production.

A reference model for airborne wind energy systems for optimization and control

2019 ◽  
Vol 140 ◽  
pp. 1004-1011 ◽  
Author(s):  
E.C. Malz ◽  
J. Koenemann ◽  
S. Sieberling ◽  
S. Gros
Keyword(s):  
Wind Energy ◽  
Reference Model ◽  
Energy Systems ◽  
Optimization And Control ◽  
Wind Energy Systems ◽  
And Control
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