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--- planning:airtight_construction:general_principles:blower_door_test [2015/09/14 18:24] – [The Passive House] wfeist
+++ planning:airtight_construction:general_principles:blower_door_test [2019/01/02 10:28] (current) – [See also] cblagojevic
@@ Line 14: / Line 14: @@
 ===== Air pressure test =====
-The **air pressure test**, or the  **n<sub>50</sub>-value** measures the total leakage through the building envelope. The n<sub>50</sub>-value (in h<sup>-1</sup>) describes the air changes at a  differential pressure of 50 Pa. A differential pressure of 50 Pa (equivalent to 5 mm water  column) is created between the inside of the building and the outside by means of a blower door test. The blower door consists if a compressor  built into an opening in the envelope (e.g. a door) creating underpressure inside the building in order to detect leakages. The actual test involves a series of underpressure and overpressure measurements determining the leakage rate at a differential pressure of 50 Pa in relation to the overall building volume. Blower door tests are offered by competent engineering firms in many countries (for German providers go to [[http://www.flib.de/|www.flib.de]]). An air pressure test is essential for Passive Houses - it is part of the certification procedure.\\
+The **air pressure test**, or the  **n<sub>50</sub>-value** measures the total leakage through the building envelope. The n<sub>50</sub>-value (in h<sup>-1</sup>) describes the air changes at a  differential pressure of 50 Pa. A differential pressure of 50 Pa (equivalent to 5 mm water  column) is created between the inside of the building and the outside by means of a blower door test. The blower door consists if a compressor  built into an opening in the envelope (e.g. a door) creating underpressure inside the building in order to detect leakages. The actual test involves a series of underpressure and overpressure measurements determining the leakage rate at a differential pressure of 50 Pa in relation to the air volume V<sub>n50</sub>. Blower door tests are offered by competent engineering firms in many countries (for German providers go to [[http://www.flib.de/|www.flib.de]]). An air pressure test is essential for Passive Houses - it is part of the certification procedure.\\
  \\
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 [[planning:airtight_construction:airtightness_measurements_in_passive_houses|]]
+[[planning:building_services:ventilation:differentiation_between_vv_and_vn50_values| Differentiation between Vv and Vn50 values]]