Retrotec DM-2A Manual de usuario descargar pdf (Pagina 64)

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©Retrotec Inc. 2012

-1.0%

-0.5%

0.0%

0.5%

1.1%

1.6%

0.0%

1.0%

0.5%

0.0%

-0.5%

-0.9%

-1.4%

1.8%

0.9%

0.0%

-0.9%

-1.8%

-2.7%

2.7%

1.3%

0.0%

-1.3%

-2.6%

-3.9%

3.4%

1.7%

0.0%

-1.7%

-3.3%

-4.9%

Achieved pressure is the actual maximum pressure achieved in the enclosure during the test.

 













In the tables, the Pressure of Interest is 50Pa, and Assumed n is 0.65 or 0.60

The actual flow exponent n for an enclosure can be calculated by measuring building leakage at

multiple pressure differences, from 10 to 50 Pa, and determining the slope of the line:







The graph of pressure versus flow will be linear if graphed on a log-log scale, and the slope will be n.

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