A New Diagnostic for Duct Leakage: DeltaQ

February 21, 2002 - 12:00pm
Bldg. 90

Duct leakage has been identified as a major contributor to HVAC energy use and building infiltration, particularly in residences.  In order to make good estimates of HVAC system energy performance, we need to know how much air leaks between the ducts and outside the building during system operation.   Existing methods for determining duct leakage do not perform well due to experimental procedures that produce imprecise results or they require many assumptions to convert measurements into the desired leakage flows.  The DeltaQ duct leakage test has been developed by the Energy Performance of Buildings Group at LBNL to determine duct leakage flows by developing a new application for existing building diagnostic equipment.  This seminar will discuss development of the test method and its calculation procedures, and present the results of laboratory and field evaluations.

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Site Access

For site access please email your request to ETA Seminars. To arrive at Building 90 via the LBNL shuttle, take "Blue Uphill". Click here for the shuttle schedule. To ensure your site access is set-up send your request 36 hours in advance of the seminar.

Remote Access

Not able to attend in person? Remote participants can use ReadyTalk Audio & Net conference to phone in to listen, while viewing the presentation via the ReadyTalk site.

Web Access Code: 4864835

USA & Canada call-in number:
1 (866) 740-1260
Access Code: 4864835#

International callers:
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If not, you will need to pay for the call yourself and use this phone number:

(303) 248-0285.