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planning:building_services:ventilation:basics:air_volumes

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planning:building_services:ventilation:basics:air_volumes [2019/01/31 09:46]
cblagojevic [Low indoor air humidities]
planning:building_services:ventilation:basics:air_volumes [2019/03/20 10:58] (current)
cblagojevic
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 {{:​picopen:​switch.png?​250}}\\ In principle, it makes sense to allow occupants to control the air volumes according to the presence and number of people. {{:​picopen:​switch.png?​250}}\\ In principle, it makes sense to allow occupants to control the air volumes according to the presence and number of people.
   * Experience with operation and evaluations of measured data (e.g. evaluation of the switch position during operation in the multi-storey building in Kassel Marbachshöhe) have shown that the systems are almost always operated at the "​Normal"​ setting in spite of the fact that it is possible for occupants to change the setting.   * Experience with operation and evaluations of measured data (e.g. evaluation of the switch position during operation in the multi-storey building in Kassel Marbachshöhe) have shown that the systems are almost always operated at the "​Normal"​ setting in spite of the fact that it is possible for occupants to change the setting.
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   * Even in single-family houses, the air volumes are only adjusted for longer periods of absence.   * Even in single-family houses, the air volumes are only adjusted for longer periods of absence.
 Nevertheless,​ this doesn'​t mean that there is no need for a three-stage switch (the Nevertheless,​ this doesn'​t mean that there is no need for a three-stage switch (the
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 First of all, the linear characteristics of the ducting network have to be determined by dimensioning the duct cross-sections and the loss of pressure including that of all installations. First of all, the linear characteristics of the ducting network have to be determined by dimensioning the duct cross-sections and the loss of pressure including that of all installations.
   * Based on these linear characteristics,​ a device is chosen with certain linear characteristics for the fan (based on a shell chart = "​pressure/​flow rate chart with equal fan efficiency areas" with the highest possible efficiency for average continuous operation).   * Based on these linear characteristics,​ a device is chosen with certain linear characteristics for the fan (based on a shell chart = "​pressure/​flow rate chart with equal fan efficiency areas" with the highest possible efficiency for average continuous operation).
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   * The device must still be able to transport the air flows necessary for purge ventilation (not with maximum efficiency as the operation periods in the purge ventilation mode are relatively short), and it must also be possible to achieve the minimum output of 0.3 1/h.   * The device must still be able to transport the air flows necessary for purge ventilation (not with maximum efficiency as the operation periods in the purge ventilation mode are relatively short), and it must also be possible to achieve the minimum output of 0.3 1/h.
  
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     * the intensity of the internal humidity sources (e.g. plants, cooking, drying clothes,​…),​     * the intensity of the internal humidity sources (e.g. plants, cooking, drying clothes,​…),​
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     * the amount of fresh air supplied from outside.     * the amount of fresh air supplied from outside.
  
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     * Adjust air volumes to lower levels     * Adjust air volumes to lower levels
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     * Add sources of moisture in the living areas (e.g. plants)     * Add sources of moisture in the living areas (e.g. plants)
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     * Keep the home as dust-free as possible: clean more often using a vacuum cleaner equipped with a fine dust filter.     * Keep the home as dust-free as possible: clean more often using a vacuum cleaner equipped with a fine dust filter.
  
planning/building_services/ventilation/basics/air_volumes.txt · Last modified: 2019/03/20 10:58 by cblagojevic