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Dynamic Modeling And Multivariable Control Of Vapor Compression Cycles In Air Conditioning Systems
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Book Synopsis Dynamic Modeling and Multivariable Control of Vapor Compression Cycles in Air Conditioning Systems by : Xiang-Dong He
Download or read book Dynamic Modeling and Multivariable Control of Vapor Compression Cycles in Air Conditioning Systems written by Xiang-Dong He and published by . This book was released on 1996 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Modeling of Vapor Compression Cycle Systems by : Eric S. Miller
Download or read book Dynamic Modeling of Vapor Compression Cycle Systems written by Eric S. Miller and published by . This book was released on 2012 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vapor compression cycles (VCS) based thermal management systems are being considered in modern aircraft where dynamic changes in heat loads are very common. Predicting dynamic behavior of vapor compression systems is critical to design, sizing, and control of aircraft thermal management systems. A novel Lagrangian method to model the dynamic behavior of vapor compression cycles is presented in this thesis. Fluid flowing through a vapor compression cycle is divided into a large number of material volumes (or mass elements). The mass contained in each element is fixed while the size of the material volume is allowed to change based on its density. At every time step, heat transfer to each mass element is determined and corresponding changes in the thermodynamic properties are evaluated. Each mass element is tracked as it moves through the evaporator, the compressor, the condenser, the expansion valve, and the piping connecting these components. This approach improves on previous models by accounting for spatial mass and enthalpy distribution, meaning that transport delays are reflected in the model result. The model predicts the transient variation during normal operation as well as start-up and shut-down modes. Model results were compared to experimental data at steady state. The model was then validated by comparing the predicted system behavior with experimental data. Results are presented and explained for three major operating condition variations : change in heat load, change in sink availability, and changes in system throttling via the expansion valve and compressor. The results depict extensive coupling of system parameters and significant response to exogenous inputs. The resulting model is modular, adaptable and runs cases faster than real time. Many opportunities exist for its utilization.
Book Synopsis Modeling and Control in Air-conditioning Systems by : Ye Yao
Download or read book Modeling and Control in Air-conditioning Systems written by Ye Yao and published by Springer. This book was released on 2016-10-01 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the latest modeling and control technologies in the context of air-conditioning systems. Firstly, it introduces the state-space method for developing dynamic models of all components in a central air-conditioning system. The models are primarily nonlinear and based on the fundamental principle of energy and mass conservation, and are transformed into state-space form through linearization. The book goes on to describe and discuss the state-space models with the help of graph theory and the structure-matrix theory. Subsequently, virtual sensor calibration and virtual sensing methods (which are very useful for real system control) are illustrated together with a case study. Model-based predictive control and state-space feedback control are applied to air-conditioning systems to yield better local control, while the air-side synergic control scheme and a global optimization strategy based on the decomposition-coordination method are developed so as to achieve energy conservation in the central air-conditioning system. Lastly, control strategies for VAV systems including total air volume control and trim & response static pressure control are investigated in practice.
Book Synopsis Encyclopedia Of Two-phase Heat Transfer And Flow Iii: Macro And Micro Flow Boiling And Numerical Modeling Fundamentals (A 4-volume Set) by : Thome John R
Download or read book Encyclopedia Of Two-phase Heat Transfer And Flow Iii: Macro And Micro Flow Boiling And Numerical Modeling Fundamentals (A 4-volume Set) written by Thome John R and published by World Scientific. This book was released on 2018-03-13 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set III of this encyclopedia is a new addition to the previous Sets I and II. It contains 26 invited chapters from international specialists on the topics of numerical modeling of two-phase flows and evaporation, fundamentals of evaporation and condensation in microchannels and macrochannels, development and testing of micro two-phase cooling systems for electronics, and various special topics (surface wetting effects, microfin tubes, two-phase flow vibration across tube bundles). The chapters are written both by renowned university researchers and by well-known engineers from leading corporate research laboratories. Numerous 'must read' chapters cover the fundamentals of research and engineering practice on boiling, condensation and two-phase flows, two-phase heat transfer equipment, electronics cooling systems, case studies and so forth. Set III constitutes a 'must have' reference together with Sets I and II for thermal engineering researchers and practitioners.
Book Synopsis Automotive Air Conditioning by : Quansheng Zhang
Download or read book Automotive Air Conditioning written by Quansheng Zhang and published by Springer. This book was released on 2016-08-10 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents research advances in automotive AC systems using an interdisciplinary approach combining both thermal science, and automotive engineering. It covers a variety of topics, such as: control strategies, optimization algorithms, and diagnosis schemes developed for when automotive air condition systems interact with powertrain dynamics. In contrast to the rapid advances in the fields of building HVAC and automotive separately, an interdisciplinary examination of both areas has long been neglected. The content presented in this book not only reveals opportunities when interaction between on-board HVAC and powertrain is considered, but also provides new findings to achieve performance improvement using model-based methodologies.
Book Synopsis Dynamic Modeling and Control of Vapor Compression Cycle Systems with Shut-down and Start-up Operations by : Bin Li
Download or read book Dynamic Modeling and Control of Vapor Compression Cycle Systems with Shut-down and Start-up Operations written by Bin Li and published by . This book was released on 2009 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Control Handbook (three volume set) by : William S. Levine
Download or read book The Control Handbook (three volume set) written by William S. Levine and published by CRC Press. This book was released on 2018-10-08 with total page 3526 pages. Available in PDF, EPUB and Kindle. Book excerpt: At publication, The Control Handbook immediately became the definitive resource that engineers working with modern control systems required. Among its many accolades, that first edition was cited by the AAP as the Best Engineering Handbook of 1996. Now, 15 years later, William Levine has once again compiled the most comprehensive and authoritative resource on control engineering. He has fully reorganized the text to reflect the technical advances achieved since the last edition and has expanded its contents to include the multidisciplinary perspective that is making control engineering a critical component in so many fields. Now expanded from one to three volumes, The Control Handbook, Second Edition brilliantly organizes cutting-edge contributions from more than 200 leading experts representing every corner of the globe. They cover everything from basic closed-loop systems to multi-agent adaptive systems and from the control of electric motors to the control of complex networks. Progressively organized, the three volume set includes: Control System Fundamentals Control System Applications Control System Advanced Methods Any practicing engineer, student, or researcher working in fields as diverse as electronics, aeronautics, or biomedicine will find this handbook to be a time-saving resource filled with invaluable formulas, models, methods, and innovative thinking. In fact, any physicist, biologist, mathematician, or researcher in any number of fields developing or improving products and systems will find the answers and ideas they need. As with the first edition, the new edition not only stands as a record of accomplishment in control engineering but provides researchers with the means to make further advances.
Book Synopsis Dynamic Modeling, Validation, and Control for Vapor Compression Systems by :
Download or read book Dynamic Modeling, Validation, and Control for Vapor Compression Systems written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intelligent Building Control Systems by : John T. Wen
Download or read book Intelligent Building Control Systems written by John T. Wen and published by Springer. This book was released on 2017-12-04 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Readers of this book will be shown how, with the adoption of ubiquituous sensing, extensive data-gathering and forecasting, and building-embedded advanced actuation, intelligent building systems with the ability to respond to occupant preferences in a safe and energy-efficient manner are becoming a reality. The articles collected present a holistic perspective on the state of the art and current research directions in building automation, advanced sensing and control, including: model-based and model-free control design for temperature control; smart lighting systems; smart sensors and actuators (such as smart thermostats, lighting fixtures and HVAC equipment with embedded intelligence); and energy management, including consideration of grid connectivity and distributed intelligence. These articles are both educational for practitioners and graduate students interested in design and implementation, and foundational for researchers interested in understanding the state of the art and the challenges that must be overcome in realizing the potential benefits of smart building systems. This edited volume also includes case studies from implementation of these algorithms/sensing strategies in to-scale building systems. These demonstrate the benefits and pitfalls of using smart sensing and control for enhanced occupant comfort and energy efficiency.
Book Synopsis Gray Box Dynamic Modeling of Vapor Compression Systems for Control Optimization by : Haopeng Liu
Download or read book Gray Box Dynamic Modeling of Vapor Compression Systems for Control Optimization written by Haopeng Liu and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Modeling and Advanced Control of Air Conditioning and Refrigeration Systems by : Bryan Philip Rasmussen
Download or read book Dynamic Modeling and Advanced Control of Air Conditioning and Refrigeration Systems written by Bryan Philip Rasmussen and published by . This book was released on 2005 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of Dynamic Systems, Measurement, and Control by :
Download or read book Journal of Dynamic Systems, Measurement, and Control written by and published by . This book was released on 2004 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes theoretical and applied original papers in dynamic systems. Theoretical papers present new theoretical developments and knowledge for controls of dynamical systems together with clear engineering motivation for the new theory. Applied papers include modeling, simulation, and corroboration of theory with emphasis on demonstrated practicality.
Book Synopsis 34th European Symposium on Computer Aided Process Engineering /15th International Symposium on Process Systems Engineering by : Flavio Manenti
Download or read book 34th European Symposium on Computer Aided Process Engineering /15th International Symposium on Process Systems Engineering written by Flavio Manenti and published by Elsevier. This book was released on 2024-06-28 with total page 3634 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 34th European Symposium on Computer Aided Process Engineering / 15th International Symposium on Process Systems Engineering, contains the papers presented at the 34th European Symposium on Computer Aided Process Engineering / 15th International Symposium on Process Systems Engineering joint event. It is a valuable resource for chemical engineers, chemical process engineers, researchers in industry and academia, students, and consultants for chemical industries. Presents findings and discussions from the 34th European Symposium on Computer Aided Process Engineering / 15th International Symposium on Process Systems Engineering joint event
Book Synopsis Proceedings of the ASME Dynamic Systems and Control Division--2003 by :
Download or read book Proceedings of the ASME Dynamic Systems and Control Division--2003 written by and published by . This book was released on 2003 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Swarm Intelligence, Part II by : Ying Tan
Download or read book Advances in Swarm Intelligence, Part II written by Ying Tan and published by Springer Science & Business Media. This book was released on 2011-05-26 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set (LNCS 6728 and 6729) constitutes the refereed proceedings of the International Conference on Swarm Intelligence, ICSI 2011, held in Chongqing, China, in June 2011. The 143 revised full papers presented were carefully reviewed and selected from 298 submissions. The papers are organized in topical sections on theoretical analysis of swarm intelligence algorithms, particle swarm optimization, applications of pso algorithms, ant colony optimization algorithms, bee colony algorithms, novel swarm-based optimization algorithms, artificial immune system, differential evolution, neural networks, genetic algorithms, evolutionary computation, fuzzy methods, and hybrid algorithms - for part I. Topics addressed in part II are such as multi-objective optimization algorithms, multi-robot, swarm-robot, and multi-agent systems, data mining methods, machine learning methods, feature selection algorithms, pattern recognition methods, intelligent control, other optimization algorithms and applications, data fusion and swarm intelligence, as well as fish school search - foundations and applications.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Guo Rong Zheng Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612259270 Total Pages :206 pages Book Rating :4.2/5 (592 download)
Book Synopsis Dynamic Modeling and Global Optimal Operation of Multizone Variable Air Volume HVAC Systems [microform] by : Guo Rong Zheng
Download or read book Dynamic Modeling and Global Optimal Operation of Multizone Variable Air Volume HVAC Systems [microform] written by Guo Rong Zheng and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1997 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy conservation and indoor environment concerns have motivated extensive research on various aspects of control of Heating, Ventilating and Air-Conditioning (HVAC) and building systems. The study on optimal operation as well as modeling of HVAC and building systems is one of the fastest growing fields that contribute to saving energy and improving indoor environment. This thesis is devoted to the development of a comprehensive modeling and optimization methodology for global multiple-stage optimal operation of HVAC and building systems. Two different dynamic models of a multizone variable air volume (VAV) system have been developed using (i) bottom-up and (ii) top-down approaches. The models take account of the dynamic interactions between building shell, VAV system components and control systems. The models describe the dynamics of fan, air distribution system, zone(s), cooling coil and primary plant (chiller) as one multivariable nonlinear system in a way that is useful for control analysis. Using the bottom-up approach a large-scale VAV system model has been developed. This model considers the interactions between flow field and thermal field via distributed capacity and variable air density considerations. An alternate model which is computationally more efficient was developed using the top-down approach. Model reduction techniques were applied to develop a reduced-order state space model of the VAV system. Results show that predictions from the reduced order model are within 5% of those from the large scale model. Optimal control schemes are developed for the efficient operation of VAV systems. In the control scheme proposed it is necessary to compute optimal setpoint profiles for local controllers. The optimal control profiles so computed can be used as tracking signals for local controllers for moving the system states from one setpoint to another. In order to determine optimal setpoint profiles an optimization methodology for formulating and solving the multiple stage optimal operation problems has been developed. The methodology is based on the maximum principle of Pontryagin and perturbation method in order to deal with the multiple time-scale of the HVAC processes and building operating schedules. A solution methodology and the corresponding computer models have been developed for solving the multiple stage optimal operation problems. The applications of the VAV model and the multistage optimization methodology have been demonstrated by considering several practical examples. The examples include (i) a comparison of optimal strategies for constant and variable air volume systems with and without time-of-day price structure for electrical energy, (ii) a two-zone VAV heating system and (iii) a five-zone VAV cooling system. Results showing the 24-hour optimal setpoint profiles, energy cost savings and the output responses such as zone temperatures and humidity ratios are given for different building operation schedules. These applications show that the developed models and optimization methodology can be used to determine energy efficient operating strategies for VAV systems without violating the thermal comfort in buildings.
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