Chapter 39. Finally, distribution of heating and cooling to the end-use space can be done by an all-air system or a variety of all-water or air/water systems and local terminals, as discussed in this chapter. Improving Existing Building Operationfocuses on the importance of proper operation and maintenance of existing HVAC systems to increase building performance. Chapters 15 and 17 have further information on some of these products. Complete air cleaning may require removing of airborne particles, microorganisms, and gaseous contaminants, but this chapter only covers removal of airborne particles and briefly discusses bioaerosols. What to Consider When Designing for N+1, Engineers Notebook, ASHRAE Journal, November 2020 Author shares lessons learned when he was a system owner at a silicon wafer fabrication plant. Finally, the instructors take the mundane, and inject humor/personal stories to make this understandable and engaging. Whether you are in consulting or in sales, this training is beneficial for everyone. The guidelines help project teams assess risks and determine design strategies useful for the integrative design process. This chapter discusses types of fans used in HVAC design and the underlying principles of their use. [ . ASHRAE is organizing its first International Building Decarbonization Conference. The fuel can be gaseous (e.g., natural or liquefied petroleum gas), liquid (primarily the lighter grades of fuel oil or biodiesel), or solid (e.g., coal, or renewable items such as wood or corn). Listen, ASHRAE Technology Portal provides access to ASHRAE Journal. Click the Archives tab from the main screen of the current issue. Chapter 48. Chapter 18. Start my free, unlimited access. Providing optimized conditions for preserving stored food is the primary function of a refrigerator or freezer. Thermal ComfortThis chapter summarizes the fundamentals of human thermoregulation and comfort in terms useful to the engineer for operating systems and designing for the comfort and health of building occupants. Medium- and High-Temperature Water HeatingMedium-temperature water (MTW) systems have operating temperatures ranging from 250F to 350F (120 to 175C) and are designed to a pressure rating of 125 to 150 psig (860 to 1030 kPa [gage]). Although some of the equipment addressed here can be applied as a single unit, this chapter covers applying multiple units to form a complete heating and air-conditioning system for a building and the distribution associated with some of these systems. Fundamentals of Air System Design (I-P & SI), 35.0 PDHsThis course provides an understanding of the basics of air movement; the components of air distribution systems; considerations of human comfort; load and occupancy demand; duct system design; sound and vibration; and how codes and standards affect the design of air systems. Any moisture that enters during installation or servicing should be removed promptly. This months cover article discusses the possible applications and future role of combined heat and power in the greater movement toward decarbonization in the built environment sciences. Features: Reducing Carbon Emissions Technology Award: Retail Building Produces Energy for Neighborhood Technology Award: Thermal Power Plant Optimization for Hotel Increasing Ventilation In 1980s High-Rise Commercial Office BuildingsA Review of Evaporative Coolings Efficiency and Environmental Value, Standing Columns: Engineers Notebook: Applying VRF In K 12 Schools: Case Studies and Lessons Learned Cybersecurity: Important Cybersecurity Tips for ASHRAE Pros IEQ Applications: Using a Human Health Standard for IAQ Management Building Sciences: Letting Airflow Out Of and Into ClosetsRefrigeration Applications A Slice of Pi, ACCESS ARTICLES THROUGH TECHNOLOGY PORTAL, Tune into conversations between leading ASHRAE experts as they discuss what HVAC engineers need to know to design better systems and grow the HVAC&R industry. Chapters and full volumes are available in theASHRAE Technology Portaland in theASHRAE Bookstore. Standards 15 and 34 provide essential guidance to manufacturers, design engineers and operators who need to stay current with new air conditioning and refrigerating requirements. Non-members can purchase features from the ASHRAE Bookstore. This chapter covers refrigerators available for restaurants, fast-food restaurants, cafeterias, commissaries, hospitals, schools, convenience stores, grocery stores, and other specialized applications. Examples are (1) a food freezing plant operating from +50 to 50F (10 to 45C); (2) a candy storage requiring 60F (15C) db with precise humidity control; (3) a beef chill room at 28 to 30F (2 to 1C) with high humidity; (4) a distribution warehouse requiring multiple temperatures for storing ice cream, frozen food, meat, and produce and for docks; and (5) a chemical process requiring multiple temperatures ranging from +60 to 60F (15 to 50C). Learning to Use Architectural Acoustics in Engineering, Engineers Notebook, ASHRAE Journal, January 2021This column introduces how room functionality improves with improved architectural acoustics, especially in rooms used for collaboration, instruction and assembly where clear speech is needed. Mass TransferThis chapter addresses mass transfer principles and provides methods of solving a simultaneous heat and mass transfer problem involving air and water vapor, emphasizing air-conditioning processes. Chapter 24. The HFDP behind my name gets on my business card and gets on every email I send, so as soon as someone receives a contact from me they can see my experience and they can see that its been validated by ASHRAE., "I can say that I belong to the 94% who are proud to hold an ASHRAE certification and to the 89% who believe that it validates their level of specialized knowledge and ability. For lower refrigeration temperatures, this requires a coolant with a freezing point below that of water. Shaping Tomorrow's Built Environment Today, Officers, Directors, Councils, Committees, Staff, Science and Technology for the Built Environment, Instructor-Led Training Seminar and Short Courses, Self-Directed Learning / Group Learning Texts, Criteria for Annual Conference City Selection, 2022 ASHRAE Handbook - Refrigeration (I-P), 2022 ASHRAE Handbook - Refrigeration (SI), Changes to the use of non-A1 refrigerants, Updated volume and refrigerant charge limit calculations, Refrigerant detector/detection and mitigation actions, Safety designations for twenty new refrigerants, Modernized submission application requirements for new refrigerants, Updates to capture flammability limits used for non-A1 refrigerant maximum charge calculations. Abbreviations and SymbolsThis chapter contains information about abbreviations and symbols for HVAC&R engineers. With available power and higher heat requirements, electric heat is used. Author clears up some of the issues and provide simples advice for expansion tank sizing and piping. In the 2022 edition of Air Movement and Control Associations award-winning magazine: Q&A with AMCAs new executive director and 2022-2023 president; your questions about life-safety dampers answered; reducing climate-change-induced heat strain and HVAC performance loss; remote fan monitoring; application of wind-driven-rain-resistant louvers. Chapter 50. Sound and VibrationIf fundamental principles of sound and vibration control are applied in the design, installation, and use of HVAC&R systems, suitable levels of noise and vibration can be achieved with a high probability of user acceptance. Regulating the humidity in a server room can be more difficult. Residential In-Space Heating EquipmentIn-space heating equipment differs from central heating in that fuel is converted to heat in the space to be heated. Refrigeration is critical for industrial processes, food storage, and medical applications and the cooling cycle lies at the heart of air conditioning. The recommended H1 temperature is 18 to 22 degrees C (64.4 to 71.6 degrees F). Nonresidential Cooling and Heating Load CalculationsThis chapter discusses common elements of cooling load calculation (e.g., internal heat gain, ventilation and infiltration, moisture migration, fenestration heat gain) and two methods of heating and cooling load estimation: heat balance (HB) and radiant time series (RTS). Designing Air-Distribution Systems to Maximize Comfort, ASHRAE Journal, September 2012An air-distribution system can be successfully designed by understanding what makes us comfortable and selecting the proper air-distribution products and layout. NIOSH upper-room design guidelines; UV-C In-Duct Surface Disinfection. This column reviews how acoustical design has become fundamental for the industry and offers a simple vocabulary of basic acoustic terms. It's also worth noting that ASHRAE provides two different metrics for each equipment class: recommended and allowable. It also gives an overview of test methods for thermal distribution system efficiency and considers the interaction between the building thermal/pressure envelope and the forced-air heating and cooling system, which is critical to the energy efficiency and cost-effectiveness of the overall system. HVAC Design Training: Level II - Applications (I-P), 12.0 PDHsThis training provides instruction in HVAC system design for experienced HVAC engineers and those who have completed HVAC Design: Level I Essentials. Airflow Around BuildingsThis chapter deals with applications of thermal and acoustical insulation for mechanical systems in residential, commercial, and industrial facilities. The Fundamentals of Expansion Tanks, ASHRAE Journal, November 2016Who would have thought such a simple piece of equipment, the expansion tank, could be so misunderstood? The Society and its members focus on building systems, energy efficiency, indoor air quality, refrigeration and sustainability within the industry. Air-Conditioning System Design Manual, 3rd edOffering real-world applications in addition to theoretical calculations and analytical procedures, Air-Conditioning System Design Manual, Third Edition, bridges the gap between theory and practice in the design of HVAC&R systems. Very early in the design of a new or retrofit building project, the HVAC design engineer must analyze and ultimately select the basic systems and whether production of primary heating and cooling should be decentralized or central. It has been completely revised and updated to reflect current industry best practices. Through the Distinguished Lecturer program, ASHRAE Chapters schedule lecturers equipped to speak on relevant subjects of interest. But also for me one of the main values of an ASHRAE certification is that ASHRAE is a global organization and one of the finest in the HVAC industry, and if you are looking for some kind of international validation of your knowledge, skills and abilities, I am sure that you will not find a better certification. Central Cooling and Heating PlantsThis chapter addresses design alternatives that should be considered when centralizing a facilitys cooling and heating sources. The potential environmental effect of chlorofluorocarbon (CFC) and hydrochlorofluorocarbon (HCFC) refrigerants on ozone depletion, and of these and the hydrofluorocarbon (HFC) and hydrofluoroolefin (HFO) refrigerants on global warming, make it imperative that refrigerants are confined to closed systems and recovered during service and at the end of life. If electric power is considerably expensive, steam or hot water generated using gas-fired sources is used in larger buildings and district cooling. Chapter 8. Chapter 27. This chapter covers the options, processes, available equipment, and challenges of all-air systems, Chapter 5. Motors, Motor Controls, and Variable-Frequency DrivesMany types of alternating-current (AC) motors are available; direct-current (DC) motors are also used, but to a more limited degree. The 2022 update provides procedures and methods for meeting minimum ventilation and IAQ requirements to engineers, design professionals, building owners, and jurisdictional authorities where model codes have been adopted. Connect-a-Colleague offers a quick, pre-written (and customizable) email invitation to join. 1. In recent years, CO2 has once again become a refrigerant of great interest. Air filtration for spaces shall comply with Table 6.47.1. NBS. It tackles most of the common issues you come across as a design engineer, and the instructors really go in-depth with practical examples from their work. HVAC Fast Facts I-PASHRAEs HVAC Fast Facts serves as a quick reference for commonly used HVAC acronyms, terminology, equations, and other essential information for designers, manufacturers, and engineers. As you can see from the text above, there is a significant difference between the recommended and allowable temperature ranges. The fluid absorbs heat at a low temperature and pressure and transfers heat at a higher temperature and pressure. ANSI Z9.5-2003. Chapter 33. ASHRAE Publications provide a great resource for reference, design guidance and learning. Chapter 26. Knowledge regarding transmission of COVID-19 is rapidly evolving. This article discusses air delivery systems, including overhead well-mixed systems, underfloor partially stratified systems, and displacement fully stratified systems. Introduction to All-Air Systems (I-P), .5 PDHsThis course explains the concept of all-air systems, with a focus on distribution and delivery components. Explore more than 300 products exhibited at the 2022 AHR Expo in Las Vegas. DDC Controls (I-P), 10.0 PDHsThis course package is comprised of 3 individual courses: DDC Networks and Protocols; DDC Specification, Installation, and Commissioning; and DDC Introduction to Hardware and Software. Expert guidance is essential. Steam SystemsSteam systems use the vapor phase of water to supply heat or kinetic energy through a piping system. This training was great and really has accelerated my understanding of HVAC design principles. The ASHRAE HVAC Design Training provided me with the information needed in order to carry out my position responsibilities more effectively. This guide provides equipment manufacturers and facility operations staff with a common set of guidelines for the design and construction of their respective equipment or facility, thereby aiding in maximizing the performance and health of the facility and its contents. It includes sizing for metal ducts, and for flexible duct when compressed at 4%, 15%, and 30% straight line compression. Variable Refrigerant FlowVariable-refrigerant-flow (VRF) HVAC systems are a direct-expansion (DX) heat pump technology platform built on the standard reverse Rankine vapor compression cycle. Steam is also used as a heat source for certain cooling processes such as single-stage and two-stage absorption refrigeration machines. Submit Feedback Wed love to hear any feedback you have on the program. Chapter 4. This chapter describes a variety of devices and their application to accomplish these important control functions. The 2022 ASHRAE HandbookRefrigeration covers the refrigeration equipment & systems essential for applications other than human comfort; including data and guidance on cooling, freezing, and storing food and industrial & medical applications of refrigeration. It's also worth noting that ASHRAE's recommendations assume a change rate of no more than 5 degrees C (41 degrees F) per 20-hour period and must be adjusted for elevation. To learn more about each one, click on the tabs below. Chapter 4. Duct DesignIn this chapter, system design and calculation of a systems frictional and dynamic resistance (total pressure) to airflow are considered. ASHRAE will recognize the outstanding student design projects at the 2024 ASHRAE Winter Meeting scheduled for February in Chicago, Illinois United States of America. Any unit (e.g., blower coil, unit cooler, product cooler, cold diffuser unit, air-conditioning air handler) is considered a forced-air cooler when operated under refrigeration conditions. As was the case for air temperature, ASHRAE provides both recommended and allowable metrics for data center humidity. This is years of experience and knowledge condensed into a priceless three-day event. Terminology of RefrigerationThis chapter seeks to define some of the common terms used in industrial refrigeration systems, specifically those using ammonia as the refrigerant. This chapter describes the design features of several categories of commercially available refrigerant compressors. CIBSE is proud to endorse NBS as its official specification and product data partner. Fundamentals of Thermodynamics (I-P & SI), 35.0 PDHsThis course provides an understanding of the basic concepts of thermodynamic including properties of a system, processes and cycles, Ideal Gas Law, the laws of thermodynamics, refrigeration cycles and thermochemistry. Submit Editorial ASHRAE Journal welcomes editorials submitted by HVAC&R Professionals. Chapter 35. Control Systems Library (SI), 32.5 PDHsThis Library is comprised of 2 Course Packages: HVAC Control Systems, and D DC Controls. Introduction to HVAC Design (SI), 1.5 PDHsThis course covers the scope and functions of modern HVAC systems and introduces the reader to the requirements of HVAC systems for maintaining human comfort in the built environment. Even if youve been in the industry for some time, this experience will be important. It covers (1) control fundamentals, including terminology; (2) types of control components; (3) methods of connecting components to form various individual control loops, subsystems, or networks; and (4) commissioning and operation. Subscription information is available here. However, equipment and systems are still very similar in all markets; therefore, this chapter primarily discusses the basic equipment used, with particular attention to collectors. Climatic Design InformationThis chapter and the accompanying data summaries in PDF format provide the climatic design information for 9237 locations in the United States, Canada, and around the world. Building Information Modeling (Dual), 2.0 PDHsShows BIM's potential to improve the flow of data during planning, construction, and operations, as well as improve a building's lifetime sustainability. It does not address criteria such as allowable moisture content, refrigerant quantity, and performance, which are specific to each machine. Guideline 11-2021 -Field Testing of HVAC Control Components. The development of systems that incorporate several of the devices discussed here for specific industrial processes is left to the engineer. Chapter 49. Today, hydronic heating and cooling coils are frequently used in conjunction with forced air systems. Applications include pipes, tanks, vessels and equipment, and ducts.
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