Ashrae Duct Fitting Databasel

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Jun 29, 2024, 8:36:47 AM6/29/24

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Ashrae Duct Fitting Databasel

Download File ☆ https://www.google.com/url?hl=en&q=https://tlniurl.com/2yMLGj&source=gmail&ust=1719750987004000&usg=AOvVaw3fwpC6m-7uPZUi2mvVcMeq

The ASHRAE Duct Fitting Database (DFDB) app allows you to perform pressure loss calculations for all 200+ ASHRAE duct fittings in both I-P and SI units. Use this mobile app in the field for quick duct pressure loss calculations. The inputs can be adjusted by touch, and installation is automatic.

The latest update to app incorporates all of the updates for the desktop version over the past 8 years, including more than 30 new fittings, plus updated fitting calcs, reports, and many other new features.

Featuring pictorial outlines of each fitting, this database is useful to design engineers dealing with a variety of duct fittings. For any given fitting, enter the flow rate and fitting information and obtain loss coefficient data and associated pressure loss. The product includes table data for supply, exhaust, and common (supply/return) duct functions. Fittings may be saved into a project file, which is easily navigated and can be stored and transferred.

The database interface features fully available input, output, calculations, and table data properties; and easily viewable calculations that update in real time.

Purchasers receive a one-year subscription for cloud-based access to the ASHRAE Duct Fitting Database ver. 6.00.05.

ASHRAE Duct Fitting Database (DFDB) for the iPhone, iPod touch, and iPad allows you to perform pressure loss calculations for ASHRAE duct fittings in both I-P and SI units. Use this mobile app in the field for quick duct pressure loss calculations. The inputs can be adjusted by touch, and installation is automatic. Purchase this product from iTunes for $9.99 Learn More

Standard 120-2017 --Method of Testing the Determine Flow Resistance of HVAC Ducts and Fittings
ASHRAE Standard 120 establishes uniform methods of laboratory testing of HVAC ducts and fittings to determine their resistance to airflow.

The Duct Size Calculator is a quick reference tool for approximating duct sizes and equivalent sizes of sheet metal duct versus flexible duct. It includes sizing for metal ducts, and for flexible duct when compressed at 4%, 15%, and 30% straight line compression. The Duct Size Calculator is the result of collaboration between ASHRAE TC 5.2, Duct Design, and the Air Distribution Institute. Learn more

ASHRAE Duct Fitting Database, this database, includes loss coefficient tables for more than 200 round, rectangular, and flat oval duct fittings. Featuring pictorial outlines of each fitting, DFDB is useful to design engineers dealing with a variety of duct fittings. For any given fitting, the user may enter the flow rate and fitting information and obtain loss coefficient data and associated pressure loss.

I have a lot of "No Loss Defined" warnings appearing and they are all associated with fittings that do not have an associated loss coefficient from the ASHRAE Table. These are fittings that are can be found in the duct fitting database but Revit is not populating them with the proper fitting designation. Is there a way to fix this?

The most common causes for the "No Loss Defined" warnings are as follows; fittings in certain conditions do not have loss information from an ASHRAE table, have no loss information specified (if loss is set to specified in the family), have no flow (so there is no loss), and Fittings with multiple paths (Tees, Crosses, Wyes), for which Revit does not support Loss Method (so it greys out the parameter).

From the sound of it, I'm guessing the fittings are those with multiple paths. The reason that multiple paths are not supported is that there is no place within Revit to store or manage the mulitple ASHRAE values, so REvit greys out the parameter.

AutoDesk has known about this issue for years, yet they refuse to do anything about it. I don't understand why they introduce a feature that is like 90% of the way there and then they never finish fixing it.

Also from the ASHRAE line-up, this app can aid in the duct fitting process by performing pressure loss calculations. More than 240 duct models are included, with measurement possible in both imperial and metric units. Illustrations of each design are included. Users can e-mail reports and spreadsheets out as well.

The ASHRAE Foundation and ASHRAE TC 5.2, Duct Design, are pleased to invite applications for the Herman and Dorothy Behls Travel and Certification Awards. TC 5.2 fully funded the endowment to honor the late Mr. Herman Behls, who was a 50-Year Distinguished Service Award member of ASHRAE. He was a respected engineer in the ASHRAE Illinois Chapter, and a longtime contributor to TC 5.2. He led the effort to write the Duct Design Guide, and was instrumental in developing the Duct Fitting Database. Through this endowment, the TC desires to encourage undergraduate and graduate engineering students, as well as ASHRAE YEA members, to continue the legacy and enhance the profound impact of the Behls family on the engineering profession.

1682-RP
STUDY TO IDENTIFY CFD MODELS FOR USE IN DETERMINING HVAC DUCT FITTING LOSS COEFFICIENTS
The objective of this research is to develop CFD techniques that are capable of predicting pressure drop in close-coupled round five-gore elbows accurate to within 15% of the experimental loss coefficients. It should investigate the significance of potential effects due to compressibility, variation in thermal properties, surface roughness and other effects.

Duct Systems Design Guide gives engineers and other design professionals the tools to design properly sized duct systems to minimize fan energy consumption, system-generated noise, and the installed cost of ductwork.

Nearly every facet of duct design is covered in detail in this guide: duct layout, fitting selection, system leakage, acoustics, equipment selection, and more. Chapters dedicated to selection and comparison of duct design methods for commercial and industrial duct systems cover the equal friction method, the static regain method, and the constant velocity method. Online access to spreadsheets in Microsoft Excel format that can be used to design commercial and industrial duct systems using these duct design methods is also available with this book. The guide also discusses duct system materials and the impacts they have on design and system efficiency, as well as fan-duct system interaction and using the ASHRAE Duct Fitting Database (DFDB).

Duct Systems Design Guide is a best-practices reference for HVAC engineers and designers seeking to develop more energy-efficient, accurate, user-friendly, and cost-efficient HVAC systems. The information detailed in this guide is useful for entry-level engineers and designers who are first learning about duct design fundamentals and also serves as a tool for more experienced engineers and design professionals wishing to refresh their design knowledge

Get these duct systems essentials together and save!
From now through December 31, when you purchase a subscription to the ASHRAE Duct Fitting Database and the newly published Duct Systems Design Guide, you can save 10% with code DFDS21 at checkout! These tools are the perfect combo for HVAC engineers and designers seeking to develop more energy-efficient, accurate, user-friendly, and cost-efficient HVAC systems. Learn more at the ASHRAE Bookstore!

ASHRAE writes standards for the purpose of establishing consensus for: 1) methods of test for use in commerce and 2) performance criteria for use as facilitators with which to guide the industry. ASHRAE publishes the following three types of voluntary consensus standards: Method of Measurement or Test (MOT), Standard Design, and Standard Practice. ASHRAE does not write rating standards unless a suitable rating standard will not otherwise be available. ASHRAE is accredited by the American National Standards Institute (ANSI) and follows ANSI's requirements for due process and standards development. Standards may be purchased at the ASHRAE Bookstore.

TC 5.2 is involved with the development of applications, such as the ASHRAE Duct Fitting Database internet application and a Duct Sizing Calculator. More information about program development can be found by attending the TC's meetings and in the TC's meeting minutes.

The ASHRAE Handbook is published in a series of four volumes, one of which is revised each year, ensuring that no volume is older than four years. The Handbook can be purchased at the ASHRAE Bookstore by clicking on this link.

HVAC Systems & Equipment: Duct Construction
This chapter covers construction of HVAC and exhaust duct systems for residential, commercial, and industrial applications. Technological advances in duct construction should be judged relative to the construction requirements described here and to appropriate codes and standards. Although the construction materials and details shown in this chapter may coincide, in part, with industry standards, they are not in an ASHRAE standard.

Comment on the Handbook: ASHRAE welcomes your comments on the Handbook or a specific Handbook chapter. To submit a comment about any aspect or part of the Handbook series, you can use the Handbook Comment Form.

ASHRAE publishes papers and transactions from presentations at its conference events. In addition, ASHRAE records most of the seminar sessions from its conferences on DVD. These DVDs are ideal for use at chapter meetings, in university courses, or company lunch and learns. Products available from the most recent conference may be found here.