Large, multicelled, and naturally ventilated buildings pose many inherent difficulties for the measurement of overall infiltration rates using tracer gases. Considering a single tracer-gas decay technique, the most obvious of these are;
- local variations in infiltration,
- imperfect internal mixing of the air, and
- practical difficulties in distributing (i.e ., seeding) the tracer gas and subsequently obtaining air samples.
A previous paper proposed a relatively simple technique to overcome these difficulties. By considering a multicell model, it showed that it was sufficient to seed part of a building with a single tracer gas in order to measure the overall infiltration rate to a good approximation.
The results from two preliminary field tests, designed to evaluate the “simple” technique, are presented here. The first test was carried out in a mechanically ventilated multicelled three-story office block and the second in a naturally ventilated large, single-cell building. The results obtained from these tests are encouraging and give confidence to proceed with the more extensive field tests required to fully validate this technique.
Units: SI
Citation: Symposium, ASHRAE Transactions, 1985, vol. 91, pt. 2B, Honolulu, HI
Product Details
- Published:
- 1985
- Number of Pages:
- 16
- File Size:
- 1 file , 1.5 MB
- Product Code(s):
- D-HI-85-40-4
