HVAC Chilled Water Distribution Schemes - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook HVAC Chilled Water Distribution Schemes write by Anuj Bhatia. This book was released on 2015-02-25. HVAC Chilled Water Distribution Schemes available in PDF, EPUB and Kindle. In large commercial and industrial systems, chilled water system serves as means to transfer heat from building spaces to the refrigeration system. Initially, when energy costs were low, constant volume and primary-secondary systems provided a stable and simple operation of the chillers and distribution systems. However, as energy costs increased, particularly in the late 1970s, the efficiency of the chillers and the costs associated with operating the distribution system became more important. As a result, the need for new schemes to improve chiller performance and reduce energy costs drove the HVAC industry to advance chilled water technology, particularly in the manner that chilled water is delivered. To understand the hydraulic considerations associated with delivering chilled water and how they influence system performance, it is important to understand how technology and design challenges over the years have influenced today's approach to chilled water pumping. This 5 - hour Quick Book discusses the history of chilled water distribution systems and the development of “variable primary flow system”. Problems such as low delta-T syndrome associated with the chilled water pumping schemes are defined and discussed and finally, this course compares the advantages and disadvantages of primary-secondary and direct-primary pumping schemes. Three chilled water schemes are discussed:SCHEME -1: CONSTANT FLOW CHILLED WATER SYSTEM SCHEME -2: PRIMARY / SECONDAY DISTRIBUTION SCHEMESCHEME -3: VARIABLE PRIMARY FLOW SCHEMEThe course includes a multiple-choice quiz consisting of twenty five (25) questions at the end to enhance course learning. Learning ObjectiveAt the conclusion of this course, the student will able to understand:1. The basic hydronic principles i.e. relationship of chilled water flow rate v/s cooling load and the energy savings due to adjustable speed pumps. 2. How do constant volume chilled water systems different from primary/secondary arrangement?3. What is low delta-T syndrome and how it affects the chiller loading?4. What are the causes and mitigation measures to prevent low delta-T syndrome?5. Why distributed pumping arrangement is better than headered arrangement for constant flow systems?6. How do primary/secondary chilled water systems create hydraulically independent loops?7. How to size the de-coupler bridge?8. The characteristics of control valves and why 2-way valve is better than 3-way valve in variable flow systems?9. How do the variable primary flow system compare with primary/secondary system in terms of cost and energy?10. The importance of design tube velocity and rate of chilled water flow variations in variable primary flow systems.
Chilled Water Distribution Systems: Design and Operation Principles
Chilled Water Distribution Systems: Design and Operation Principles - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Chilled Water Distribution Systems: Design and Operation Principles write by Charles Nehme. This book was released on . Chilled Water Distribution Systems: Design and Operation Principles available in PDF, EPUB and Kindle. Welcome to "Chilled Water Distribution Systems: Design and Operation Principles." This book is born out of a passion for engineering excellence and a desire to share knowledge in the field of HVAC systems. In these pages, you'll find a comprehensive exploration of the design and operation principles governing chilled water distribution systems. From fundamentals to advanced concepts, our aim is to provide engineers, designers, and students with a practical resource that enhances understanding and facilitates informed decision-making. Drawing upon years of experience in the industry, we've crafted this book to be both informative and accessible, blending theory with real-world applications. Whether you're a seasoned professional or just beginning your journey in HVAC engineering, we hope you find value in these pages and that they serve as a valuable reference throughout your career. Thank you for joining us on this exploration of chilled water distribution systems. We invite you to dive in, engage with the material, and embark on a journey of learning and discovery.
Data Driven Energy Centered Maintenance
Data Driven Energy Centered Maintenance - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Data Driven Energy Centered Maintenance write by Fadi Alshakhshir. This book was released on 2021-07-20. Data Driven Energy Centered Maintenance available in PDF, EPUB and Kindle. Over recent years, many new technologies have been introduced to drive the digital transformation in the building maintenance industry. The current trend in digital evolution involves data-driven decision making which opens new opportunities for an energy centered maintenance model. Artificial Intelligence and Machine Learning are helping the maintenance team to get to the next level of maintenance intelligence to provide real-time early warning of abnormal equipment performance. This edition follows the same methodology as the First. It provides detailed descriptions of the latest technologies associated with Artificial Intelligence and Machine Learning which enable data-driven decision-making processes about the equipment’s operation and maintenance. Technical topics discussed in the book include: Different Maintenance Types and The Need for Energy Centered Maintenance The Centered Maintenance Model Energy Centered Maintenance Process Measures of Equipment and Maintenance Efficiency and Effectiveness Data-Driven Energy Centered Maintenance Model: Digitally Enabled Energy Centered Maintenance Tasks Artificial Intelligence and Machine Learning in Energy Centered Maintenance Model Capabilities and Analytics Rules Building Management System Schematics The book contains a detailed description of the digital transformation process of most of the maintenance inspection tasks as they move away from being manually triggered. The book is aimed at building operators as well as those building automation companies who are working continuously to digitalize building operation and maintenance procedures. The benefits are reductions in the equipment failure rate, improvements in equipment reliability, increases in equipment efficiency and extended equipment lifespan.
The Comprehensive Guide to Chilled Water Systems: Design, Operation, and Maintenance
The Comprehensive Guide to Chilled Water Systems: Design, Operation, and Maintenance - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Comprehensive Guide to Chilled Water Systems: Design, Operation, and Maintenance write by Charles Nehme. This book was released on . The Comprehensive Guide to Chilled Water Systems: Design, Operation, and Maintenance available in PDF, EPUB and Kindle. Welcome to the world of chilled water systems! In this book, we aim to provide you with a comprehensive understanding of chilled water systems, their components, and their applications. Whether you are a student, a professional in the HVAC industry, or simply curious about this fascinating technology, this book will serve as a valuable resource. Chilled water systems play a crucial role in providing cooling for a wide range of applications, from large commercial buildings to industrial facilities and data centers. They are highly efficient, reliable, and versatile, making them an integral part of modern cooling systems. This book is structured to take you on a journey through the fundamentals of chilled water systems. We will start by explaining the basic principles of cooling and the advantages of using chilled water as a medium for heat transfer. We will explore the various components that make up a chilled water system, such as chillers, cooling towers, pumps, and air handling units, and discuss their functionalities and interconnections. Throughout the book, we will delve into the design considerations for chilled water systems, including system capacity, pipe sizing, insulation, and control strategies. We will also cover topics such as water treatment, maintenance practices, and energy efficiency measures to optimize the performance of chilled water systems. Additionally, we will address common challenges and troubleshooting techniques, allowing you to diagnose and resolve issues that may arise in chilled water systems. We will discuss strategies for system optimization, load management, and integration with other building systems, emphasizing the importance of sustainability and environmental responsibility. As you progress through the chapters, you will find practical examples, case studies, and illustrations to enhance your understanding. The goal is to provide you with a well-rounded knowledge base that empowers you to work with chilled water systems effectively. It is important to note that this book assumes a basic understanding of thermodynamics and HVAC principles. However, we have endeavored to explain complex concepts in a clear and accessible manner, making it suitable for both beginners and experienced professionals. We hope that this book will serve as a valuable reference and inspire you to explore the exciting world of chilled water systems further. So, without further ado, let's dive into the cool world of chilled water systems!
Optimization of Heating, Ventilation, and Air-conditioning (HVAC) Chilled Water Plant Systems
Optimization of Heating, Ventilation, and Air-conditioning (HVAC) Chilled Water Plant Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Optimization of Heating, Ventilation, and Air-conditioning (HVAC) Chilled Water Plant Systems write by Cliff Odhiambo Nudi. This book was released on 2020. Optimization of Heating, Ventilation, and Air-conditioning (HVAC) Chilled Water Plant Systems available in PDF, EPUB and Kindle. Heating, Ventilation, and Air-conditioning accounts for about 60% of the total energy consumed in commercial facilities including office buildings, hospitals, retail stores, warehouses, campuses, manufacturing facilities, medical facilities, etc. As the cost of electricity and energy continue to rise, building owners and facility managers continue to witness a rise in the Total Cost of Ownership. Chilled water plant system is the largest consumer of energy in HVAC system consuming 75% of the total energy used in HVAC according to the Department of Energy. Operating chilled water plant systems at the recommended AHRI Standard 550/590 for performance rating of water chilling and heat pumps temperature set-points seldom results in optimized operation and cost savings, since factors such as operation schedules, site-specific conditions such as prevailing ambient conditions, part load operations, keep on changing. The aim of this project was to design an optimized heating, ventilation, and air-conditioning chilled water system for a 100,000 square feet facility complex in Houston, Texas. By selecting a chilled water distribution system; chilled water temperatures, flow rate, and sizes; condenser water distribution system, condenser water temperatures, flow rate, and pipe sizes; cooling tower approach temperatures; and piping system optimization, a saving of 25% on the annual energy costs at peak load operations of the complex facility was obtained. This analysis also showed that as the chilled water supply temperature is set upwards, the pump energy increases but the chiller energy and the cooling tower energy decreases resulting in a positive net system gain.
