Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Jan Lorenz"'
Publikováno v:
Heliyon, Vol 10, Iss 10, Pp e31027- (2024)
This study presents data-driven modeling and nonlinear model predictive control of solar thermal plants in district heating, for the purpose of operation optimization. The study considers the efficient operation of a solar thermal plant in Hillerød,
Externí odkaz:
https://doaj.org/article/1e5124a874c54738834240fbe3d7301c
Autor:
Svensen, Jan Lorenz, Cantisani, Nicola, da Silva, Wilson Ricardo Leal, Merino, Javier Pigazo, Sampath, Dinesh, Jørgensen, John Bagterp
We provide a cyclone model for dynamical simulations in the pyro-process of cement production. The model is given as an index-1 differential-algebraic equation (DAE) model based on first engineering principle. Using a systematic approach, the model i
Externí odkaz:
http://arxiv.org/abs/2409.10916
Autor:
Svensen, Jan Lorenz, da Silva, Wilson Ricardo Leal, Merino, Javier Pigazo, Sampath, Dinesh, Jørgensen, John Bagterp
We present a 2D model for a grate belt cooler in the pyro-section of a cement plant. The model is formulated as an index-1 differential-algebraic equation (DAE) model based on first engineering principles. The model systematically integrates thermo-p
Externí odkaz:
http://arxiv.org/abs/2409.09076
Autor:
Jan Lorenz Svensen
Publikováno v:
Energies, Vol 15, Iss 22, p 8555 (2022)
District heating systems (DHS) are driven by the heat demands of their consumers, with higher demands giving a higher load on the heat production. While heat demands are human-dependent, they contain diurnal behaviors and weather dependencies. The di
Externí odkaz:
https://doaj.org/article/56850a0fb68f46a784357c8d742f8f1f
We present an index-1 differential-algebraic equation (DAE) model for dynamic simulation of a calciner in the pyro-section of a cement plant. The model is based on first engineering principles and integrates reactor geometry, thermo-physical properti
Externí odkaz:
http://arxiv.org/abs/2405.03208
Autor:
Svensen, Jan Lorenz, da Silva, Wilson Ricardo Leal, Merino, Javier Pigazo, Sampath, Dinesh, Jørgensen, John Bagterp
This study provides a systematic description and results of a dynamical simulation model of a rotary kiln for clinker, based on first engineering principles. The model is built upon thermophysical, chemical, and transportation models for both the for
Externí odkaz:
http://arxiv.org/abs/2405.03200
Autor:
Zhang, Zhanhao, Svensen, Jan Lorenz, Kaysfeld, Morten Wahlgreen, Christensen, Anders Hilmar Damm, Hørsholt, Steen, Jørgensen, John Bagterp
In this study, we introduce numerical methods for discretizing continuous-time linear-quadratic optimal control problems (LQ-OCPs). The discretization of continuous-time LQ-OCPs is formulated into differential equation systems, and we can obtain the
Externí odkaz:
http://arxiv.org/abs/2404.09316
We present a novel dynamic model of a flash clay calciner. The model consists of thermophysical properties, reaction kinetics and stoichiometry, transport, mass and energy balances, and algebraic constraints. This gives rise to a system of partial di
Externí odkaz:
http://arxiv.org/abs/2404.07674
Publikováno v:
Research & Politics, Vol 2 (2015)
The aggregated judgments of many usually outperform individual estimates of vaguely known facts. Communication among individuals may, however, undermine this wisdom-of-crowd effect because it makes judgments mutually dependent. Deliberative democrati
Externí odkaz:
https://doaj.org/article/754894d4e9dd4537a3c34b5d15f0cc7a
Publikováno v:
PLoS ONE, Vol 8, Iss 2, p e54904 (2013)
We demonstrate by mathematical analysis and systematic computer simulations that redistribution can lead to sustainable growth in a society. In accordance with economic models of risky human capital, we assume that dynamics of human capital is modele
Externí odkaz:
https://doaj.org/article/c978116556194e2fa2ec5532c89f6247