Hits:

Indexed by:期刊论文

Date of Publication:2017-07-01

Journal:BUILDING AND ENVIRONMENT

Included Journals:SCIE、EI、Scopus

Volume:119

Page Number:20-30

ISSN No.:0360-1323

Key Words:Residential building; Airtightness; Ventilation; Measurements; Blower door

Abstract:There is little known on the airtightness performance of residential buildings in China. The present study intends to investigate the airtightness performance of ten detached houses in China's cold area using "blower door test". The thermal infrared imager and smoke pencil were used to find out the typical air leakage places in the building envelope.
   Test results show that the air change rate at the pressure difference of 50 Pa of the tested houses varies from 1.89 h(-1) to 0.84 h(-1) with a mean value of 1.42 h(-1). The typical air leakage places happen at the reserved holes in the outer wall that were not well filled after construction, the frames of window and door that were not fitted correctly and the draught seal was deformed, and the check valves at the inlets of the discharge flue and exhaust airway in the house.
   The tested detached houses were ranked by their airtightness performance. The total joint length of the opening part of the windows and doors was estimated for each detached house and a linear correlation between the n(50) and the joint length of the opening part of the windows and doors was examined. (C) 2017 Elsevier Ltd. All rights reserved.