planning:refurbishment_with_passive_house_components:thermal_envelope:airtightness
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| planning:refurbishment_with_passive_house_components:thermal_envelope:airtightness [2019/06/28 08:59] – [Penetrations of the airtight layer] cblagojevic | planning:refurbishment_with_passive_house_components:thermal_envelope:airtightness [2022/02/15 19:37] (current) – admin | ||
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| In particular, airtightness has the following advantages: | In particular, airtightness has the following advantages: | ||
| * prevention of moisture related building damage | * prevention of moisture related building damage | ||
| + | |||
| * prevention of drafts and cold feet | * prevention of drafts and cold feet | ||
| + | |||
| * prevention of high heat losses due to infiltration | * prevention of high heat losses due to infiltration | ||
| + | |||
| * improvement of sound insulation | * improvement of sound insulation | ||
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| * improved indoor air quality (e.g. prevention of pollution with radon from the ground) | * improved indoor air quality (e.g. prevention of pollution with radon from the ground) | ||
| An adequate level of airtightness is the basis for: | An adequate level of airtightness is the basis for: | ||
| * the use of a variable demand-oriented ventilation (functioning with directed air flows) and | * the use of a variable demand-oriented ventilation (functioning with directed air flows) and | ||
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| * the effectiveness of the thermal insulation without air flowing through it | * the effectiveness of the thermal insulation without air flowing through it | ||
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| <WRAP center 60%> | <WRAP center 60%> | ||
| - | < | + | $$ |
| \Large{n_{50} = \dfrac{V_{50}}{V} \: [\dfrac{1}{h}]} | \Large{n_{50} = \dfrac{V_{50}}{V} \: [\dfrac{1}{h}]} | ||
| - | </ | + | $$ |
| </ | </ | ||
| Line 81: | Line 86: | ||
| <WRAP center 60%> | <WRAP center 60%> | ||
| - | < | + | $$ |
| \Large{q_{50} = \dfrac{V_{50}}{A} \: [\dfrac{m³}{hm²}]} | \Large{q_{50} = \dfrac{V_{50}}{A} \: [\dfrac{m³}{hm²}]} | ||
| - | </ | + | $$ |
| </ | </ | ||
planning/refurbishment_with_passive_house_components/thermal_envelope/airtightness.1561705168.txt.gz · Last modified: 2019/06/28 08:59 by cblagojevic