Abstract
Abstract In this study, the effects of lock operations on the infiltration rates for the two window types sliding and lift sliding(LS) are investigated through experiment and simulation. The airtightness levels of the two window types-with locks bothon and off-were measured according to the KS F 2292 Test method of airtightness that is used for windows and doors.The air-flow rates of both window types with the locks on for a pressure differential of 10 Pa are 1.98 ㎥ /( ㎡ h) and 1.68 ㎥ /( ㎡ h), respectively; with the locks off, the air-flow rates of the sliding and LS windows are 2.64 ㎥ /( ㎡ h) and 5.83 ㎥ /( ㎡ h), respectively, whereby the air-flow rates are 33% higher for sliding and 247% higher for LS. The air change per hour (ACH) was calculated using the ventilation-simulation software CONTAM. For the sliding window, the ACH changedfrom 0.45 to 0.57 when the lock was operated from on to off, representing an increase of 27%. For the LS window, theACH changed from 0.29 to 0.81, showing an increase of 179%.
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