Get ashrae duct fitting database alternative downloads. Material thickness astm type duct end treatment galvanized 26 18 gauge a653 g60g90 48, 60, 72 paint grip 24 18 gauge a653 a60 60 pvs 24 18 gauge a653 4 x 1, 4 x 4 60 raw both ends aluminum. The course concludes with the basic instructions for filling out a manual d speedsheet. Once downloaded, close the program and execute this patch. Table of contents hvac systems duct design fourth edition vii foreword. Smc manufactures coil line ductwork in 456 lengths. This menudriven database includes loss coefficient tables for 228 round and rectangular duct fittings. May 30, 2017 today we move another step down the road of duct design. The objective of this research is to test flat oval transition. Air duct components and minor dynamic loss coefficients. The obstruction ratio is defined as the area ratio of the fitting to the duct crosssection, namely, the ratio of the shaded area to the whole duct section see figure 2. This 3hour hvac training online video series provides guidance on how to properly use a friction chart andor accas duct slide rule values for sizing duct in the field. Ive always sized duct using a rule of dumb that i was taught 21 years ago in tech college. To add a duct fitting manually autocad mep 2017 autodesk.
Assessing the ecological integrity of running waters proceedings of the international conference he, audio 50 aps owners manual, and many other ebooks. Atlanta the american society of heating, refrigerating and airconditioning engineers ashrae duct fitting database dfdb desktop application has been made into a smart phone app, allowing engineers to make complicated calculations in the field and receive faster results. Ashrae duct fitting database runs on the following operating systems. Read ocaocp oracle database 11g allinone exam guide with cdrom. Revit 2015 ashrae duct fitting database no loss defined.
How to create a shared area parameter for parametric. Table data included for supply, exhaust, and common supplyreturn duct functions. Duct fitting loss coefficients for different design conditions are sought using a duct fitting database program as described in ashrae 1993. The velocity in the duct w was chosen as constant 5 ms for every analysed case. The effect of fitting type on pressure losses across fittings is studied when the obstruction ratio is kept constant. It was initially added to our database on 06272010. To establish the equivalent length for a given fitting, the fitting equation is set as being equal to the duct length equation. Ashrae duct fitting database relates to education tools. You can also add a fitting where you want to start a segment or run or customize the connection to a part. I started the series with a look at the basic physics of air moving through ducts. This annual subscription includes cloudbased access to a database of loss coefficient tables for more than 200 round, rectangular, and flat oval duct fittings.
Ashraes duct fitting database dfdb desktop application has become more flexible as a smart phone app, allowing for engineers to make calculations in the field and get results they need quickly. The application was developed for the iphone, ipod touch and ipad, and allows users to perform pressure loss calculations for more than 200 hvac. For the complete fitting database see the ashrae duct fitting database ashrae 2009. Based on these formulas, dryerells can be measured the same as straight pipe. Pressure losses across multiple fittings in ventilation ducts. Each duct fitting in the database is identified by a unique number. The equivalent diameter is the diameter of a circular duct or pipe that gives the same pressure loss as an equivalent rectangular duct or pipe the table below can be used to compare equivalent diameters for rectangular and round circular ducts. Air owwasprovidedbyacentrifugalfan driven by a variable speed motor. Lowvelocity ductwork design is very important for energy efficiency in air distribution systems. Dec 09, 20 the effect of fitting type on pressure losses across fittings is studied when the obstruction ratio is kept constant. In revit most duct fittings families expose an area value for the cross sectional area of the fitting.
Rectangular elbows see ashraes duct fitting database program. The calculation are based on an extensive library of fittings originating from united mcgill and ashrae s 1993 duct fitting database. Mar 25, 2016 read ocaocp oracle database 11g allinone exam guide with cdrom. A duct fitting database, developed by ashrae 1994, which includes 228 round and rectangular fittings with the provision to include flat. If the ashrae number you want to use is in the list, select it for assigned engineering id. Then in part 2 i covered available static pressure. Hvac systems duct design fourth edition xi tables page 2. Ashrae duct fitting database is a shareware software in the category miscellaneous developed by ashrae duct fitting database. The ductsize program is based on the design procedures given in the ashrae handbook of fundamentals, the ashrae duct fitting database, and the smacna hvac systems duct design manual. Number of 6 runs times two plus two gives you the width. The duct sizer application allows you to quickly size one hvac duct run using the constant friction method. The short version is that friction and turbulence in ducts results in pressure drops.
About file types supported by ashrae duct fitting database aims to be the goto resource for file type and related software information. This permits use of the maximum allowed run length. Lowvelocity design will lead to larger duct sizes, but it may be worth since, doubling of duct diameter. Ashrae duct fitting database software free download.
Smc tdc, slipdrive and raw sheet metal connectors, inc. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files. Ashrae has several useful software products, free for download. The easy duct system begins with pipes and fittings i. Ashrae duct fitting database this database, available on cd, includes loss coefficient tables for more than 200 round, rectangular, and flat oval duct fittings. Fitting loss calculator computes the total pressure drop of a fitting based on its configuration, dimensions and the airflow passing through it. Ductsize is based on the design procedures given in the 2005 ashrae handbook fundamentals, ashrae duct fitting database and the smacna hvac systems duct design manual. Add duct fittings other than those specified by you in the duct routing preference.
Trusted windows pc download ashrae duct fitting database 5. Elite software ductsize hvac duct sizing and analysis. The program can calculate using either the static regain, equal friction, or constant velocity methods. Important new features include a project explorer and corresponding report that provide a treestyle graphical representation of all trunks and runouts in the project. Research article pressure losses across multiple fittings. Southwark metal mfgs sheet metal pipe, ductwork, and fittings conform to this system of equivalent lengths as well as conforming to industry national.
For example, each elbow used is equivalent to 30 feet of straight pipe or duct. Highvelocity hv duct systems are characterized by air velocities in the range of 2500 to 3500 fpm. Purchasers receive a oneyear subscription for cloudbased access to the duct fitting database ver. Featuring pictorial outlines of each fitting, this cd is useful to design engineers dealing with a variety of duct fittings.
Bellmouths shall be constructed of heavy duty galvanized steel. Research article pressure losses across multiple fittings in. The table is based on the ducts friction loss formula the rectangular dimensions and the air flow volume are adapted to the equal friction loss. American society of heating, refrigerating and airconditioning engineers, incorporated, 1997 air conditioning 306 pages. The latest version of ashrae duct fitting database is currently unknown. Note if there is more than one ashrae number to choose from, consult the ashrae duct fitting database to make sure you choose the most appropriate fitting for your system. The biggest update to the ashrae duct fitting database app in years is now available.
The calculation are based on an extensive library of fittings originating from united mcgill and ashraes 1993 duct fitting database. By using this method of calculating duct pressure loss, the equivalent length of each fitting is added to the total duct length to establish the pressure loss through the duct system. This is only the case for fixedseze fittings however. Include measured length and fitting equivalent length. Registration is now open for the ashrae 2020 virtual conference. Today we move another step down the road of duct design. Think of this application as a digital version of the classic trane ductulator.
Bellmouth fitting shall be model bm or bmd with damper. Duct design 3 total effective length energy vanguard. Free resources related to applications and software. Thousands of users have downloaded this useful application for performing quick and simple duct sizing analysis. This database, available on cd, includes loss coefficient tables for more than 200 round, rectangular, and flat oval duct fittings. Ashrae duct fitting database, 9781936504152, available at book depository with free delivery worldwide. This value is the comparison length of this fitting to an equivalent length of straight pipe or duct. Corporate headquarters sheet metal connectors, inc. The database interface features fully available input, output, calculations, and table data properties. The ashrae 365 app is a useful tool that will not only help you navigate the ashrae winter and annual conferences, but also put the latest information from headquarters right at. Ashrae fundamentals handbook has a methodology for calculating the friction loss in ducts and fittings. Autocad mep adds fittings as you draw a duct run based on default fittings in the duct routing preferences, or you can manually add a fitting to an existing segment or duct run. Featuring pictorial outlines of each fitting, this database is useful to design engineers dealing with a variety of duct fittings. With all of the updates that have been incorporated into the desktop version over the past 8 years, it includes more than 30 new fittings, plus updated fitting calcs, reports, and many other new features.
Bellmouths shall include airtite neoprene gasket to ensure a tight fitting with minimal leakage. Ashrae duct fitting database free version download for pc. Contractor shall provide buckley bellmouth takeoffs at all branch duct locations. The most common causes for the no loss defined warnings are as follows. Minor or dynamic pressure loss in air duct system components can be. A given fitting may be accessed to obtain loss coefficient data and associated pressure loss when appropriate flow rate and fitting information are entered. Rng and standard wall function was used for calculations. The presented results are valid for the turbulent flow. This database, with cloudbased access by annual subscription, includes loss coefficient tables for more than 200 round, rectangular, and flat oval duct fittings. The 2020 virtual conference technical program includes 8 tracks around 300 speakers and offers an indepth learning experience providing solutions, technology demonstrations, and.
This process describes how to create a shared parameter to display the cross sectional. Duct fitting loss coefficient tables ashrae american society of heating, refrigerating and airconditioning engineers, incorporated, 1997 air conditioning 306 pages. It has worked pretty well for 8 duct in resi applications. Raw duct is fabricated for proprietary duct connection systems. Parametric duct fittings do not expose this value directly in the family. Minor or dynamic losses in duct systems are pressure losses caused by.
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