Airflow in Ducts PDF Download
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Author: Leo A. Meyer
Publisher: LAMA Books
ISBN: 0880690186
Category : House & Home
Languages : en
Pages : 125
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Book Description
Author: Leo A. Meyer
Publisher: LAMA Books
ISBN: 0880690186
Category : House & Home
Languages : en
Pages : 125
Get Book Here
Book Description
Author: Leo A. Meyer
Publisher: HVAC Books—Best on the Web
ISBN: 9780880690188
Category : House & Home
Languages : en
Pages : 132
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Book Description
Author: Y. Chartier
Publisher: World Health Organization
ISBN: 9241547855
Category : Medical
Languages : en
Pages : 132
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Book Description
This guideline defines ventilation and then natural ventilation. It explores the design requirements for natural ventilation in the context of infection control, describing the basic principles of design, construction, operation and maintenance for an effective natural ventilation system to control infection in health-care settings.
Author: Leo A. Meyer
Publisher: Lama Books Leo A. Meyer Associates
ISBN: 9780880690287
Category : Air conditioning
Languages : en
Pages : 0
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Book Description
Computerized layout machines are so efficient that sheet metal pattern drafting is becoming a lost art. This book is designed for small shops that do not have layout machines or have a need for layout knowledge. This book is also valuable for those who want a fuller knowledge of the trade. --from the foreward.
Author: Claude-Alain Roulet
Publisher: Earthscan
ISBN: 1849773718
Category : Architecture
Languages : en
Pages : 211
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Book Description
Energy efficiency in buildings requires, among other things, that ventilation be appropriately dimensioned: too much ventilation wastes energy, and insufficient ventilation leads to poor indoor air quality and low comfort.Studies have shown that ventilation systems seldom function according to their commissioned design. They have also shown that airflow measurement results are essential in improving a ventilation system. This key handbook explains why ventilation in buildings should be measured and describes how to measure it, giving applied examples for each measurement method.The book will help building physicists and ventilation engineers to properly commission ventilation systems and appropriately diagnose ventilation problems throughout the life of a building. Drawing on over 20 years of experience and the results of recent international research projects, this is the definitive guide to diagnosing airflow patterns within buildings.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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Book Description
This study tests the performance of a variable airflow small-diameter duct heating, ventilation, and air conditioning (HVAC) system in a new construction unoccupied low-load test house in Pittsburgh, Pennsylvania. The duct system was installed entirely in conditioned space and was operated from the winter through summer seasons. Measurements were collected on the in-room temperatures and energy consumed by the air handler and heat pump unit. Operation modes with three different volumes of airflow were compared to determine the ideal airflow scenario that maximizes room-to-room thermal uniformity while minimizing fan energy consumption. Black felt infrared imagery was used as a measure of diffuser throw and in-room air mixing. Measured results indicate the small-diameter, high velocity airflow system can provide comfort under some conditions. Solar heat gains resulted in southern rooms drifting beyond acceptable temperature limits. Insufficient airflow to some bedrooms also resulted in periods of potential discomfort. Homebuilders or HVAC contractors can use these results to assess whether this space conditioning strategy is an attractive alternative to a traditional duct system. The team performed a cost analysis of two duct system configurations: (1) a conventional diameter and velocity duct system, and (2) the small-diameter duct system. This work applies to both new and retrofit homes that have achieved a low heating and cooling density either by energy conservation or by operation in a mild climate with few heating or cooling degree days. Guidance is provided on cost trade-offs between the conventional duct system and the small-diameter duct system.
Author: Carson Dunlop
Publisher: Dearborn Real Estate
ISBN: 9780793179350
Category : Business & Economics
Languages : en
Pages : 950
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Book Description
This introductory overview of the major home systems gives students a solid foundation for beginning a career in home inspection. This comprehensive text gets students out into the field quickly while serving as a springboard for the 13 advanced electives in the Principles line. Systems & Standards focuses on system and component problems, their practical implications, and inspections strategies for finding them. No other single volume offers both the breadth and depth of this introduction.
Author: Leo A. Meyer
Publisher: HVAC Books—Best on the Web
ISBN: 9780880690218
Category : House & Home
Languages : en
Pages : 96
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Book Description
Author: Craig Migliaccio
Publisher: AC Service Tech, LLC
ISBN: 1733817212
Category : Technology & Engineering
Languages : en
Pages : 239
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Book Description
This Ebook is dedicated to those who are eager to learn the HVACR Trade and Refrigerant Charging/Troubleshooting Practices. In this book, you will find Step by Step Procedures for preparing an air conditioning and heat pump system for refrigerant, reading the manifold gauge set, measuring the refrigerants charge level, and troubleshooting problems with the system's refrigerant flow. This book differs from others as it gives key insights into each procedure along with tool use from a technician's perspective, in language that the technician can understand. This book explains the refrigeration cycle of air conditioners and heat pumps, refrigerant properties, heat transfer, the components included in the system, the roles of each component, airflow requirements, and common problems. Procedures Included: Pump Down, Vacuum and Standing Vacuum Test, Recovery and Recovery Bottle Use, Refrigerant Manifold Gauge Set and Hose Connections, Service Valve Positions and Port Access, Preparation of the System for Refrigerant, Refrigerant Charging and Recovery on an Active System, Troubleshooting the Refrigerant Charge and System Operation
Author: Kevin Douglas Weaver
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Airflow pressure losses through rigid metallic and non-metallic flexible ducts were studied and recommendations to improve the rating of flexible ducts were made as part of this study. The testing was done in compliance with ASHRAE Standard 120-1999, Methods of Testing to Determine Flow Resistance of HVAC Air Ducts and Fittings (ASHRAE 1999). Duct sizes of 6", 8", and 10" were tested in a positive pressure, blow-through configuration. An As-Built Test Protocol expands the test configurations specified by Standard 120-1999. Results of the current tests extend the existing ASHRAE/ACCA data for flexible duct which does not include pressure loss data for flexible ducts that are compressed beyond approximately 4%. The data from this study exhibit higher pressure drops than prior ACCA or ASHRAE data. Some configurations exhibit over ten times the pressure loss found in rigid duct or fully stretched flexible duct of the same diameter.
