DUCT SYSTEM DESIGN GUIDE
DUCT SYSTEM DESIGN GUIDE
DUCT SYSTEM design guide is to provide engineers and other design professionals with the tools and knowledge to design duct systems so that fans are properly sized, minimize the installed cost of the ductwork, minimize system-generated noise, and minimize fan energy. The original vision was that this guide would clearly describe procedures useful for entry-level engineers and designers who were first learning about duct design fundamentals. However, it was also desired that the guide be a valuable tool for more experienced engineers and design professionals wishing to refresh their design knowledge’s.
The guide initially conceived as ASHRAE Research Project RP-1180. The Project Monitoring Subcommittee (PMS), under the auspices of ASHRAE Technical Committee (TC) 5.2, Duct Design, took control of the editorial process and accepted the task of authoring the guide after it became apparent that writing a duct design guide suitable for these disparate audiences was exceptionally challenging. Herman Behls, a former chair of TC 5.2, volunteered to complete the writing.
DUCT SYSTEM DESIGN GUIDE Content
- DUCT DESIGN FUNDAMENTALS
- DUCT DESIGN CONSIDERATIONS
- EQUAL FRICTION METHOD
- STATIC REGAIN METHOD
- FAN-DUCT SYSTEM INTERACTION
- DUCT SYSTEM MATERIALS AND CONSTRUCTION
- DUCT SYSTEM ACOUSTICS
Ducts in air distribution systems designed to transport a given volume of air as efficiently and quietly as possible to minimize energy consumption and eliminate excessive noise. Duct system layout, fitting selection, leakage, acoustics, and equipment selection are important aspects of duct design.
The goals of duct design are
- to design energy-efficient HVAC systems that deliver the proper quantity of air to specific areas of a building or zones while minimizing first costs and operating costs
- to provide a comprehensive design and a high-quality project with adequate funding and minimum construction disputes to the owner.
Various aspects of the duct design process include minimizing fan energy use, as depicted in the figure below. (A comprehensive discussion of commissioning is beyond the scope of this book, but there are numerous sources of information available, such as those listed at www.ashrae.org/commissioning-essentials.)
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