planning:building_services:ventilation:differentiation_between_vv_and_vn50_values
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planning:building_services:ventilation:differentiation_between_vv_and_vn50_values [2019/10/24 09:09] – [Calculation methodology] cblagojevic | planning:building_services:ventilation:differentiation_between_vv_and_vn50_values [2023/01/30 11:23] – [Vn50 – Net air volume for pressurisation test] zbastian | ||
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| Reference volume of the ventilation system | | Reference volume of the ventilation system | ||
| is used to calculate the air exchange rate | is used for the calculation of n< | | is used to calculate the air exchange rate | is used for the calculation of n< | ||
- | | Rough calculation: | + | | Rough calculation: |
The next sections provide a detailed description of both values and their calculation. | The next sections provide a detailed description of both values and their calculation. | ||
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For further reference, please see the current PHPP manual (PHPP 9 manual: section 21.2.9). | For further reference, please see the current PHPP manual (PHPP 9 manual: section 21.2.9). | ||
- | ===== Vn50 – Net air volume for pressurisation test ===== | + | ===== V< |
The air volume V< | The air volume V< | ||
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Therefore, the base floor area of the stairwell is simply multiplied by the clear height of the storey. The volume for flights of stairs and intermediate landings does not have to be subtracted. | Therefore, the base floor area of the stairwell is simply multiplied by the clear height of the storey. The volume for flights of stairs and intermediate landings does not have to be subtracted. | ||
- | The volume of elevator shafts and any other kind of shafts inside the thermal envelope | + | The air volume of elevator shafts and of any other kind of shafts inside the thermal envelope |
- | + | ||
---- | ---- | ||
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| Sections of example calculation project: The area to be considered for the V< | | Sections of example calculation project: The area to be considered for the V< | ||
- | [{{: | + | [{{: |
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A more detailed explanation can be found in the following sources: | A more detailed explanation can be found in the following sources: | ||
- | [[http:// | + | [[http:// |
[[planning: | [[planning: |
planning/building_services/ventilation/differentiation_between_vv_and_vn50_values.txt · Last modified: 2023/01/30 11:52 by zbastian