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Author: Guy W. Gupton Publisher: The Fairmont Press, Inc. ISBN: 0881733946 Category : Technology & Engineering Languages : en Pages : 354
Book Description
In the eight years since the publication of the first edition of this book, there have been quantum changes in the automated temperature control (ATC) industry due to the widespread & growing use of direct digital control (DDC) systems. The fully updated second edition fully addresses these technology changes, from equipment characteristics & operation, to troubleshooting & maintenance, to training of operating & maintenance personnel. The full range of topics pertinent to the effective operation of all types of HVAC control systems currently in use today are explored, including equipment-to-control interactions, control system set-up & functions, local loop to building automation system interfaces, performance prediction & assessment, operational parameters, & maintenance & testing.
Author: Charles Nehme Publisher: Charles Nehme ISBN: Category : Technology & Engineering Languages : en Pages : 33
Book Description
Welcome to the world of HVAC controls! This book aims to provide you with a comprehensive understanding of HVAC controls, their importance, and their impact on heating, ventilation, and air conditioning systems in buildings. Heating, ventilation, and air conditioning play a vital role in maintaining indoor comfort, energy efficiency, and occupant well-being. Within these systems, HVAC controls act as the brains, regulating and optimizing the operation of various components to achieve the desired indoor conditions. Without proper control strategies and technologies, HVAC systems would be inefficient, unreliable, and unable to adapt to changing conditions. The field of HVAC controls is constantly evolving, driven by advancements in technology, the need for energy efficiency, and the demand for intelligent and connected buildings. From basic control strategies to advanced technologies like IoT, machine learning, and cloud computing, HVAC controls have come a long way in enhancing system performance and occupant comfort. Throughout this book, we will delve into the fundamental principles of HVAC controls, exploring the different components, sensors, actuators, and control strategies that make up these systems. We will discuss the integration of HVAC controls into building automation systems, the role of controls in energy efficiency and indoor air quality, and the impact of advanced technologies on the future of HVAC controls. We will also address the challenges and considerations in HVAC controls, including system complexity, sensor accuracy, energy efficiency versus occupant comfort, maintenance and troubleshooting, cybersecurity, and evolving industry standards. By understanding and addressing these challenges, we can effectively implement and maintain HVAC controls to ensure optimal system performance and occupant satisfaction. Whether you are a student, a professional in the HVAC industry, a building manager, or simply interested in learning about HVAC controls, this book aims to provide you with a comprehensive and practical guide to understanding and utilizing HVAC controls effectively. It is my hope that this book will serve as a valuable resource, equipping you with the knowledge and insights needed to navigate the world of HVAC controls, make informed decisions, and contribute to the design, operation, and maintenance of efficient and comfortable indoor environments. So, let's embark on this journey together, exploring the fascinating world of HVAC controls and unlocking the potential for energy-efficient, sustainable, and comfortable buildings.
Author: John W. Mitchell Publisher: John Wiley & Sons ISBN: 0470624574 Category : Science Languages : en Pages : 629
Book Description
Heating Ventilation and Air Conditioning by J. W. Mitchell and J. E. Braun provides foundational knowledge for the behavior and analysis of HVAC systems and related devices. The emphasis of this text is on the application of engineering principles that features tight integration of physical descriptions with a software program that allows performance to be directly calculated, with results that provide insight into actual behavior. Furthermore, the text offers more examples, end-of-chapter problems, and design projects that represent situations an engineer might face in practice and are selected to illustrate the complex and integrated nature of an HVAC system or piece of equipment.
Author: Robert McDowall Publisher: Elsevier ISBN: 0080569927 Category : Technology & Engineering Languages : en Pages : 359
Book Description
A hard copy companion to the eLearning course that serves as a practical guide to the principles and characteristics of controls, and how to apply them in the use, selection, specification and design of controls systems.
Author: Charles Nehme Publisher: Charles Nehme ISBN: Category : Technology & Engineering Languages : en Pages : 39
Book Description
Air conditioning systems play a crucial role in providing comfortable indoor environments, whether it's in residential, commercial, or industrial settings. Understanding the principles of psychrometrics is essential for designing, operating, and optimizing these HVAC (Heating, Ventilation, and Air Conditioning) systems effectively. Psychrometrics is the study of the thermodynamic properties of air and its moisture content. It involves the measurement and analysis of parameters such as temperature, humidity, pressure, and enthalpy to determine the state of air and its ability to hold moisture. These parameters are crucial for designing air conditioning systems that can maintain optimal indoor conditions for human comfort, equipment operation, and various industrial processes. This book aims to provide a comprehensive understanding of psychrometrics and its practical applications in HVAC systems. It explores the fundamental concepts and equations related to air properties, psychrometric charts, and the psychrometric processes involved in air conditioning. Moreover, it delves into the various components and systems that make up an air conditioning system, such as air handlers, cooling coils, refrigeration cycles, and ventilation systems. Optimizing air conditioning systems is a key focus of this book. By leveraging the principles of psychrometrics, engineers and technicians can enhance the efficiency and performance of HVAC systems, resulting in energy savings, improved indoor air quality, and increased occupant comfort. The book covers topics such as load calculations, equipment selection, airflow distribution, humidity control strategies, and system optimization techniques. Throughout the book, real-world examples, case studies, and practical tips are provided to illustrate the application of psychrometrics in different scenarios. Whether you are a HVAC professional, engineer, technician, or someone interested in understanding the inner workings of air conditioning systems, this book serves as a valuable resource to enhance your knowledge and skills. It is worth noting that while this book provides a comprehensive overview of psychrometrics and air conditioning systems, it does not delve into the intricacies of HVAC design and installation. For detailed design guidelines and standards, it is recommended to refer to relevant industry codes, manuals, and regulations. With a solid understanding of psychrometrics and its role in air conditioning systems, readers will be equipped with the knowledge necessary to design, optimize, and maintain efficient HVAC systems, creating comfortable and healthy indoor environments for all. Let us embark on this journey into the fascinating world of HVAC psychrometrics and unlock the secrets of optimizing air conditioning systems.
Author: Jarek Kurnitski Publisher: MDPI ISBN: 303928178X Category : Technology & Engineering Languages : en Pages : 220
Book Description
Future buildings require not only energy efficiency but also proper building automation and control system functionalities in order to respond to the needs of occupants and energy grids. These development paths require a focus on occupant needs such as good indoor climate, easy operability, and monitoring. Another area to be tackled is energy flexibility, which is needed to make buildings responsive to the price signals of electricity grids with increasing amounts of fluctuating renewable energy generation installed both in central grids and at building sites. This Special Issue is dedicated to HVAC systems, load shifting, indoor climate, and energy and ventilation performance analyses in buildings. All these topics are important for improving the energy performance of new and renovated buildings within the roadmap of low energy and nearly zero energy buildings. To improve energy performance and, at the same time, occupant comfort and wellbeing, new technical solutions are required. Occupancy patterns and recognition, intelligent building management, demand response and performance of heating, cooling and ventilation systems are some common keywords in the articles of this Special Issue contributing to future highly performing buildings with reliable operation.
Author: Raad Z. Homod Publisher: LAP Lambert Academic Publishing ISBN: 9783847306252 Category : Languages : en Pages : 288
Book Description
The purpose of HVAC system is to provide and maintain a desired indoor thermal comfort. HVAC system inherents nonlinearity of the large scale system including pure lag time, big thermal inertia, uncertain disturbance factors and constraints which lead to inability to efficiently control this system. Furthermore, there is no combined model developed for the comprehensive HVAC system. This book addresses these issues by proposing a hybrid model combining building structure with the equipments of HVAC system in one model. The hybrid identification of physical and empirical methods is explained where empirical Residential Load Factor is used to calculate a buildings load. The indoor thermal sensation identification is using a TS fuzzy model based on PMV and tuned by Gauss-Newton Method. To control such sophisticated system, a new online-tuned TS Fuzzy Forward controller is proposed. This algorithm manipulates inputs of AHU based on optimization of inputs of PMV sensor. An important finding in this book is the conversion of a fuzzy inference system for PMV and control model into memory layers parameters. This approach is computationally faster and efficient than traditional methods.
Author: John T. Wen Publisher: Springer ISBN: 3319684620 Category : Technology & Engineering Languages : en Pages : 321
Book Description
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.
Author: Eugene Van Heerden Publisher: ISBN: Category : Languages : en Pages :
Book Description
Practicing engineers need an integrated building, HVAC and control simulation tool for optimum HVAC design and retrofit. Various tools are available to the researchers, but these are not appropriate for the consulting engineer. To provide the engineer with a tool which can be used for typical HVAC projects, new models for building, HVAC and control simulation are introduced and integrated in a user-friendly, quick-to-use tool. The new thermal model for buildings is based on a transfer matrix description of the heat transfer through the building shell. It makes provision for the various heat flow paths that make up the overall heat flow through the building structure. The model has been extensively verified with one hundred and three case studies. These case studies were conducted on a variety of buildings, ranging from a 4m2 bathroom, to a 7755 m2 factory building. Eight of the case studies were conducted independently in the Negev Desert in Israel. The thermal model is also used in a program that was custom-made for the AGREMENT Board (certification board for the thermal performance of new low-cost housing projects). Extensions to the standard tool were introduced to predict the potential for condensation on the various surfaces. Standard user patterns were incorporated in the program so that all the buildings are evaluated on the same basis. In the second part of this study the implementation of integrated simulation is discussed. A solution algorithm, based on the Tarjan depth first-search algorithm, was implemented. This ensures that the minimum number of variables are identified. A quasi-Newton solution algorithm is used to solve the resultant simultaneous equations. Various extensions to the HVAC and control models and simulation originally suggested by Rousseau [1] were implemented. Firstly, the steady-state models were extended by using a simplified time-constant approach to emulate the dynamic response of the equipment. Secondly, a C02 model for the building zone was implemented. Thirdly, the partload performance of particular equipment was implemented. Further extensions to the simulation tool were implemented so that energy management strategies could be simulated. A detailed discussion of the implications of the energy management systems was given and the benefits of using these strategies were clearly illustrated, in this study. Finally, the simulation tool was verified by three case studies. The buildings used for the verification ranged from a five-storeyed office and laboratory building, to a domestic dwelling. The energy consumption and the dynamics of the HVAC systems could be predicted sufficiently accurately to warrant the use of the tool for future building retrofit studies.
Author: Building Research Establishment
Author: Building Research Establishment
Author: Guy W. Gupton
Author: Charles Nehme
Author: John W. Mitchell
Author: Robert McDowall
Author: Charles Nehme
Author: Jarek Kurnitski
Author: Raad Z. Homod
Author: John T. Wen
Author: Eugene Van Heerden