LABORATORY EVALUATION OF THE DELTA Q TEST FOR DUCT LEAKAGE

ANDREWS,J.W.

Brookhaven National Laboratory

关键词: Blowers;    Pressurization;    32 Energy Conservation, Consumption, And Utilization;    Ducts;    Residential Buildings;   

DOI  :  10.2172/811286
RP-ID  :  BNL--71220-2003-IR
RP-ID  :  AC02-98CH10886
RP-ID  :  811286

美国|英语

来源: UNT Digital Library

【 摘 要 】

Using a residential-size duct system in a controlled laboratory setting, the repeatability and accuracy of the Delta Q test for air leakage in residential duct systems have been measured. More than 100 Delta Q tests were performed. These were compared with results using fan pressurization and also with results of a procedure (Delta Q Plus) that uses leakage hole-size information to select the leakage pressures to be used in the Delta Q algorithm. The average error in supply or return leakage for the fan-pressurization test was 6.4% of system fan flow. For the Delta Q test it was 3.4% of fan flow, while for Delta Q Plus it was 1.9% of fan flow.