[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-398711-105":59,"doc-detail-398711-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","duct-leakage-testing-agenda-need-for-duct-leakage-testing","Duct Leakage Testing - Agenda - Need for duct leakage testing","","Duct Leakage Testing presentation outlines why ductwork leakage matters for energy conservation, indoor air quality, and comfort. It explains system leakage as the combined effect of duct, equipment, and accessory leakage, and clarifies the presentation scope focused on duct leakage only. The content reviews key testing requirements across the US and Europe, identifies common leakage locations such as joints, seams, and penetrations, and describes basic test steps including sealing, pressurization, airflow measurement, and comparison to standards.",{"@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/duct-leakage-testing-agenda-need-for-duct-leakage-testing/398711/",{"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/duct-leakage-testing-agenda-need-for-duct-leakage-testing/398711.png","ImageObject",300,407,{"name":92,"@type":93},"Ben ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-23","2026-09-27",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why should ducts be tested for leakage?","Question",{"text":112,"@type":113},"Leakage can waste 10–30% of heated or cooled air, prevent supply air from reaching where it is needed, and increase loads through leaky return ducts. It can also pull air from uncontrolled spaces, leading to humidity and contaminant problems.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How is system leakage defined in the presentation?",{"text":117,"@type":113},"System leakage equals duct leakage plus equipment leakage, and it can also include accessory leakage. The presentation scope focuses on duct leakage only and excludes leakage through equipment and accessories (referencing ASHRAE 193 for equipment).",{"name":119,"@type":110,"acceptedAnswer":120},"What are the basic steps for performing duct leakage testing?",{"text":121,"@type":113},"Identify the ductwork section to be tested by calculating surface area, seal the ductwork, pressurize to the specified level, measure the flow needed to maintain duct pressure, and compare the measured results with relevant standards.","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},398711,1790859139,{"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":44,"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":144,"read_time":145},2336478951081,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Duct Leakage Testing  \nKen Helfers, TSI Inc.  \n© 2011, TSI Incorporated  \nAgenda  \n• Need for duct leakage testing  \n• Duct leakage testing standards and regulations  \n• Performing duct leakage testing  \n© 2011, TSI Incorporated  \nWhy Test Ducts for Leakage?  \n• Conserve energy  \n– 10-30% of heated/cooled air lost through ductwork  \n– Leaky supply ducts don’t delivery air where needed  \n– Leaky return ducts add load  \n© 2011, TSI Incorporated  \nWhy Test Ducts for Leakage?  \n• Indoor Air Quality  \n– Leaky returns can pull in air from uncontrolled spaces, causing  \n• Humidity problems  \n• Contaminants  \n© 2011, TSI Incorporated  \nSystem Leakage  \n• IAQ, Comfort, Energy issues caused by leakage from HVAC System  \n• System Leakage = Duct Leakage + Equipment Leakage  \n+ Accessory Leakage  \n• Scope of presentation = Duct leakage  \n– Does not include:  \n• Leakage through Equipment (See ASHRAE 193)  \n• Leakage through Accessories  \n– Commercial & industrial systems  \n• Similar concepts for residential  \n© 2011, TSI Incorporated  \nWhy Test Ducts for Leakage?  \n• Requirements  \n– US  \n• SMACNA HVAC Air Duct Leakage Test manual , First edition, 1985  \n• ASHRAE 90.1 (Proposed)  \n• Project specifications  \n• California Title 24 􀃆 residential testing required if ahu/furnace in garage or ducts in non-conditioned space (attic)  \n– Europe  \n• BS EN 12237:2003 – Circular Ductwork  \n• BS EN 1507:2006 – Rectangular Ductwork  \n• DW/143 (HVAC—A practical guide to Ductwork leakage testing)  \n• Eurovent 2/2 (Air leakage rate in sheet metal air distribution systems)  \n© 2011, TSI Incorporated  \nWhere Does Duct Leakage  \nOccur?  \n• Transverse Joint  \n– Duct-to-duct, -branch,-tap, etc.  \n• Longitudinal Seam  \n– Joining of 2 edges indirection of airflow  \n• Penetration  \n– Rod, wire, tubing, etc.  \n• Sealing not required: Spiral seams  \n– Screws & fasteners  \n– Damper rods  \n© 2011, TSI Incorporated  \nWhere Does Duct Leakage  \nOccur?  \n• Higher-pressure ductwork  \n– ASHRAE 90.1 recommends only testing ductwork rated >3 in H2 O – Don’t test flex duct  \n© 2011, TSI Incorporated  \nHow to Test Duct Leakage  \n(Basic)  \n• Identify ductwork section to be tested  \nIdentify ductwork section to be tested  \n– Calculated surface area  \n• Seal ductwork  \n• Pressurize ductwork to specified level  \nMeasure flow required to maintain duct  \n• Measure flow required to maintain duct pressure  \n• Compare to standards  \n© 2011, TSI Incorporated  \nDuct Leakage Measurements  \n• % of Flow requirements  \n– Problem: Disregards size of ductwork & static pressure  \n– i.e. 1% of flow on 3900 cfm system = 39 cfm. If 1300 ft2 duct area = 3 cfm leakage / 100 ft2  \n300 ft2 duct area = 13 cfm leakage / 100 ft2  \n• Test pressure requirements  \n– Problem: Test pressure higher than duct design  \n– i.e. testing system designed for 2 in H2 O operation at 10 in H2 O  \n• Need to consider  \n– Surface area of ductwork  \n• Type of ductwork (round, rectangular)  \n– Static pressure  \n© 2011, TSI Incorporated","cbCaiimHBiu0bMIu","https://ap.wps.com/l/cbCaiimHBiu0bMIu","pdf",4249913,51,"English","# Agenda\n## Need for duct leakage testing\n## Duct leakage testing standards and regulations\n## Performing duct leakage testing\n# Why Test Ducts for Leakage?\n## Conserve energy\n## Indoor Air Quality\n## Humidity problems and contaminants\n# System Leakage and Presentation Scope\n# Requirements and Standards (US and Europe)\n# Where Does Duct Leakage Occur?\n## Transverse joints, longitudinal seams, penetrations\n## Higher-pressure ductwork\n# How to Test Duct Leakage (Basic)\n# Duct Leakage Measurements","[{\"question\":\"Why should ducts be tested for leakage?\",\"answer\":\"Leakage can waste 10–30% of heated or cooled air, prevent supply air from reaching where it is needed, and increase loads through leaky return ducts. It can also pull air from uncontrolled spaces, leading to humidity and contaminant problems.\"},{\"question\":\"How is system leakage defined in the presentation?\",\"answer\":\"System leakage equals duct leakage plus equipment leakage, and it can also include accessory leakage. The presentation scope focuses on duct leakage only and excludes leakage through equipment and accessories (referencing ASHRAE 193 for equipment).\"},{\"question\":\"What are the basic steps for performing duct leakage testing?\",\"answer\":\"Identify the ductwork section to be tested by calculating surface area, seal the ductwork, pressurize to the specified level, measure the flow needed to maintain duct pressure, and compare the measured results with relevant standards.\"}]","Duct Leakage Testing - Agenda - Need for duct leakage testing | PDF",1790488350,129]