[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-663222-105":59,"doc-detail-663222-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","hvac-systems-duct-design-fourth-edition-december-2006","HVAC SYSTEMS DUCT DESIGN - FOURTH EDITION - DECEMBER 2006","","HVAC Systems Duct Design is a SMACNA fundamental manual for designing HVAC air distribution duct systems. It sets out core methods and engineering guidelines for duct sizing and related design considerations, including materials, construction methods, economics, layout, pressure losses, fan selection, duct leakage, acoustic issues, and duct heat transfer. Emphasis is placed on energy conservation through balancing duct size with available space and system pressure loss, considering both initial and life-cycle costs. U.S. and metric units are provided, with practical examples and reference tables.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/hvac-systems-duct-design-fourth-edition-december-2006/663222/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/hvac-systems-duct-design-fourth-edition-december-2006/663222.png","ImageObject",300,407,{"name":92,"@type":93},"Guten tag","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What does the manual cover in HVAC duct design?","Question",{"text":112,"@type":113},"It covers basic methods and procedures for designing HVAC air distribution systems, including duct sizing guidance and key related topics such as materials, construction methods, duct layout, pressure losses, fan selection, leakage, acoustics, and heat transfer.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What does the manual not address?",{"text":117,"@type":113},"It does not include the calculation of air conditioning loads or room air ventilation quantities.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the manual approach energy conservation in duct sizing?",{"text":121,"@type":113},"It emphasizes balancing duct size with the space allocated while accounting for duct system pressure loss, since higher pressure loss increases fan power and operating costs. It also stresses choosing materials, equipment, and construction methods to optimize both initial and life-cycle costs.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},663222,1793225862,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},687212321768,"https://ap-avatar.wpscdn.com/avatar/a0010bdbe886d2fe77?x-image-process=image/resize,m_fixed,w_180,h_180&k=1789897067658708522","[www.fire-gas.com](www.fire-gas.com)  \nHVAC SYSTEMS DUCT DESIGN  \nطراﺣﯽ ﮐﺎﻧﺎل ھﺎی ﺗﮭوﯾﮫ ﻣطﺑوع  \nSHEET METAL AND AIR CONDITIONING CONTRACTORS’NATIONAL ASSOCIATION, INC.  \n[www.smacna.org](www.smacna.org)  \n\n|  |  |  |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| | مدرس ، طراح و مشاور سیستم های ( آتش نشانی ، تهویه ، اگزاست و فشار مثبت ) |  |  |  |  |  |  |  |  |  |\n| دارای صلاحیت سازمان آتش نشانی |  |  |  |  |  |  |  |  |  |  |\n| \u003Cbr>ها |  |  | اخذ تاییده از سازمان آتش نشانی |  |  |  |  |  |  |  |\n|  |  |  | اولین هند بوک سیستم اطفاء حریق و مدیریت دود در ایران\u003Cbr>Handbook of Smoke Control Engineering |  |  |  |  |  |  | |\n|  |  |  | طراحی سیستم های اطفا آبی ، گازی و فوم Sprinkler,FM200,CO2,Foam طراحی ، انتخاب ، تست و راه اندازی پمپ های آتش نشانی مطابق NFPA20 طراحی سیستم های اگزاست و تهویه پارکینگ ، فشار مثبت راه پله - آسانسور وآتریوم |  |  |  |  |  | |  |\n| |  |  |  | |  | ﻧﺮم اﻓﺰار ﮐﺎﻧﺘﻢ Contam ﻧﺮم اﻓﺰار ﭘﺎﯾﺮوﺳﯿﻢ و ﭘﺎس ﻓﯿﺪر Pyrosim,Pathfinder ﻧﺮم اﻓﺰار اﺗﻮاﺳﭙﺮﯾﻨﮏ Autosprink  |  |  | |  |\n|  |  |  |  | ﻧﺮم اﻓﺰار اﻧﺘﺨﺎب ﻓﻦ، دﻣﭙﺮﻫﺎي دود و آﺗﺶ Sodeca Quick Fan & RF Damper |  |  |  |  |  |  |\n| |  | |  |  | برای دریافت اطلاعات بیشتر کد روبرو را اسکن کنید |  |  |  |  |  |\n|  |  |  |  |  |  [www.fire-gas.com](www.fire-gas.com) |  |  [Aparat/fire-gas.com](Aparat/fire-gas.com) |  |  |  |\n| \u003Cbr>\u003Cbr>02634411758\u003Cbr>00989123280127\u003Cbr>2\u003Cbr>اﻟﺒﺮز ﮔﻮﻫﺮدﺷﺖ خ 12 ﺷﺮﻗﯽ پ 8 ط اول واﺣﺪ\u003Cbr>|  |  |  |  |  |  |  |  |  |  |\n|  instagram/firegascom |  |  |  |  [t.me/fire_gas](t.me/fire_gas) info@fire-gas.com |  |  |  |  youtube/firegas2447 |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |\n\nHVAC SYSTEMS DUCT DESIGN  \nFOURTH EDITION − DECEMBER 2006  \nSHEET METAL AND AIR CONDITIONING CONTRACTORS’NATIONAL ASSOCIATION, INC.  \n4201 Lafayette Center Drive Chantilly, VA 20151−1209  \n[www.smacna.org](www.smacna.org)  \nHVAC SYSTEMS DUCT DESIGN  \nCOPYRIGHT 􀀁 SMACNA 2006 All Rights Reserved  \nby  \nSHEET METAL AND AIR CONDITIONING CONTRACTORS’NATIONAL ASSOCIATION, INC.  \n4201 Lafayette Center Drive  \nChantilly, VA 20151−1209  \nPrinted in the U.S.A.  \nFIRST EDITION – JULY 1977  \nSECOND EDITION – JULY 1981  \nTHIRD EDITION – JUNE 1990  \nFOURTH EDITION – DECEMBER 2006  \nExcept as allowed in the Notice to Users and in certain licensing contracts, no part of this book may be reproduced, stored in a retrievable system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher.  \nFOREWORD  \nIn keeping with its policy of disseminating information and providing standards of design and construction, the Sheet Metal and Air Conditioning Contractors’ National Association, Inc. (SMACNA), offers this comprehensive fundamental HVAC Systems−Duct Design manual as part ofour continuing effort to upgrade the quality of work produced by the heating, ventilating and air conditioning (HVAC) industry. This manual presents the basic methods and procedures required to design HVAC air distribution systems. It does not deal with the calculation of air conditioning loads or room air ventilation quantities.  \nThis manual is part one ofa three set HVAC Systems Library. The second manual is the SMACNAHVAC Systems−Applications manual that contains information and data needed by designers and installers of more specialized air and hydronic HVAC systems. The third manual is theHVAC Systems−Testing, Adjusting and Balancing manual, a recently− updated publication on air and hydronic system testing and balancing.  \nThe HVAC duct system designer is faced with many considerations after the load calculations are completed and the type of distribution system is determined. This manual provides not only the basic engineering guidelines for the sizing ofHVAC ductwork systems, but also related information in the areas of:  \na. Materials  \nb. Methods of Construction  \nc. Economics of Duct Systems  \nd. Duct System Layout  \ne. Pressure Losses  \nf. Fan Selection  \ng. Duct","cbCaivOGzKfwIan4","https://ap.wps.com/l/cbCaivOGzKfwIan4","pdf",7224094,391,"English","# Foreword\n## Manual scope and purpose\n## Relationship to the HVAC Systems Library\n## Design considerations and covered topics\n## Energy conservation and costing emphasis\n## Units, references, and applicability","[{\"question\":\"What does the manual cover in HVAC duct design?\",\"answer\":\"It covers basic methods and procedures for designing HVAC air distribution systems, including duct sizing guidance and key related topics such as materials, construction methods, duct layout, pressure losses, fan selection, leakage, acoustics, and heat transfer.\"},{\"question\":\"What does the manual not address?\",\"answer\":\"It does not include the calculation of air conditioning loads or room air ventilation quantities.\"},{\"question\":\"How does the manual approach energy conservation in duct sizing?\",\"answer\":\"It emphasizes balancing duct size with the space allocated while accounting for duct system pressure loss, since higher pressure loss increases fan power and operating costs. It also stresses choosing materials, equipment, and construction methods to optimize both initial and life-cycle costs.\"}]","HVAC SYSTEMS DUCT DESIGN - FOURTH EDITION - DECEMBER 2006 | PDF",985]