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planning:refurbishment_with_passive_house_components:affordable_ventilation_solutions_for_retrofits_component_award_2016 [2016/09/26 17:19] – francis.bosenick@passiv.deplanning:refurbishment_with_passive_house_components:affordable_ventilation_solutions_for_retrofits_component_award_2016 [2019/02/21 12:56] (current) – cblagojevic
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 ====== Component Award 2016: Affordable ventilation solutions for retrofits ====== ====== Component Award 2016: Affordable ventilation solutions for retrofits ======
  
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 Active overflow elements are another interesting option for air distribution (Figure 1). This new concept is especially useful for retrofits because the duct network can be reduced to a short extract air network. The basic idea is that supply air enters only one room (the hallway or living room, for instance). Small ventilators in the lintels of interior doors or in separating walls distribute the supply air into neighbouring rooms. These ventilators have very low power consumption of about 1 W. The return flow from the rooms back into the hallway can take place passively through a door gap or a vent.  Active overflow elements are another interesting option for air distribution (Figure 1). This new concept is especially useful for retrofits because the duct network can be reduced to a short extract air network. The basic idea is that supply air enters only one room (the hallway or living room, for instance). Small ventilators in the lintels of interior doors or in separating walls distribute the supply air into neighbouring rooms. These ventilators have very low power consumption of about 1 W. The return flow from the rooms back into the hallway can take place passively through a door gap or a vent. 
  
-Figure 1+[{{:picopen:fig_1_comp.png?600|Figure 1: Ventilation concept with active overflow (source: University of Innsbruck)}}]
  
 **Optimised device integration** **Optimised device integration**
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 Four aspects are crucial for the efficient operation of ventilation systems: Four aspects are crucial for the efficient operation of ventilation systems:
   * highly efficient ventilation units (heat recovery rate ≥ 75 %; electrical power consumption ≤ 0.45 Wh/m³);   * highly efficient ventilation units (heat recovery rate ≥ 75 %; electrical power consumption ≤ 0.45 Wh/m³);
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   * duct network optimised for pressure losses and high-quality air filters with low pressure losses;   * duct network optimised for pressure losses and high-quality air filters with low pressure losses;
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   * constantly balanced operation (balance between supply and extract air flow); and   * constantly balanced operation (balance between supply and extract air flow); and
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   * regular maintenance of the ventilation unit (once a year in the fall before the heating season begins is recommended, with a filter change and a check of condensate drain).   * regular maintenance of the ventilation unit (once a year in the fall before the heating season begins is recommended, with a filter change and a check of condensate drain).
  
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 Air volumes also have to be constantly balanced for efficient operation. Only then can the full potential of heat recovery be tapped and energy savings be ensured over the long term. The savings from lower ventilation heat losses from a system with automatic volume flow balancing (such as ventilators with constant volume flow) are all the greater the better the ventilation unit’s effective heat recovery rate is – and the more airtight the building is (Figure 2).  Air volumes also have to be constantly balanced for efficient operation. Only then can the full potential of heat recovery be tapped and energy savings be ensured over the long term. The savings from lower ventilation heat losses from a system with automatic volume flow balancing (such as ventilators with constant volume flow) are all the greater the better the ventilation unit’s effective heat recovery rate is – and the more airtight the building is (Figure 2). 
  
-Figure 2+[{{:picopen:fig_2_comp.png?600|Figure 2: Ventilation heat losses relative to the ventilation unit’s degree of balancing (correlation between extract and supply air flow), hr: heat recovery rate}}]
  
 Building airtightness and ventilation systems’ heat recovery efficiency continue to improve so that using a device with automatic volume flow balancing always pays for itself (the average effective heat recovery rate of devices certified according to Passive House Institute criteria is already 84 %). Building airtightness and ventilation systems’ heat recovery efficiency continue to improve so that using a device with automatic volume flow balancing always pays for itself (the average effective heat recovery rate of devices certified according to Passive House Institute criteria is already 84 %).
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 This year’s Component Award focuses on affordable residential ventilation for retrofits based on the example of a typical building from the 1960’s (Figure 3). A multi-family building with eight identical dwellings is to be equipped with controlled ventilation in the dwellings in the course of a multistage renovation plan. Each dwelling is to have up to three residents. This year’s Component Award focuses on affordable residential ventilation for retrofits based on the example of a typical building from the 1960’s (Figure 3). A multi-family building with eight identical dwellings is to be equipped with controlled ventilation in the dwellings in the course of a multistage renovation plan. Each dwelling is to have up to three residents.
  
-Figure 3+[{{:picopen:fig_3_comp.png?550|Figure 3: Floor plan of a three-room dwelling in a typical multi-family building complex from the 1960’s}}]
  
 Holistic ventilation solutions for the entire building were asked for. They should be easy to install and have very good energy consumption levels. The participants are to offer working ventilation systems for the entire building in accordance with the following requirements. In addition to investment costs for the ventilation unit and all required components, each offer includes planning, installation, calibration and maintenance costs for the first year of operation. Holistic ventilation solutions for the entire building were asked for. They should be easy to install and have very good energy consumption levels. The participants are to offer working ventilation systems for the entire building in accordance with the following requirements. In addition to investment costs for the ventilation unit and all required components, each offer includes planning, installation, calibration and maintenance costs for the first year of operation.
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   * **Fully functioning ventilation system:** If additional services are required for the ventilation unit to be fully functional, they must be taken into consideration in the offer.   * **Fully functioning ventilation system:** If additional services are required for the ventilation unit to be fully functional, they must be taken into consideration in the offer.
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   * **Design of air volumes:** They are to be designed so that air quality of IDA 3 (moderate indoor air quality in accordance with EN 13779) is attainable in normal operating mode with three occupants per dwelling (at directed airflow from supply air into extract air rooms equivalent to a supply air volume flow of ca. 90 m³/h). In addition, reduced ventilation should be an option along with open windows.   * **Design of air volumes:** They are to be designed so that air quality of IDA 3 (moderate indoor air quality in accordance with EN 13779) is attainable in normal operating mode with three occupants per dwelling (at directed airflow from supply air into extract air rooms equivalent to a supply air volume flow of ca. 90 m³/h). In addition, reduced ventilation should be an option along with open windows.
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   * **Noise:** When the unit is in constant operation, noise levels must not exceed ≤ 25 dB(A) in living rooms and ≤ 30 dB(A) in functional rooms. If the device itself does not meet these requirements, additional steps must be taken and included in the cost (silencers, encasements, etc.).   * **Noise:** When the unit is in constant operation, noise levels must not exceed ≤ 25 dB(A) in living rooms and ≤ 30 dB(A) in functional rooms. If the device itself does not meet these requirements, additional steps must be taken and included in the cost (silencers, encasements, etc.).
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   * **Summer ventilation:** Because the building is in a city centre, the devices should provide a summer ventilation strategy.   * **Summer ventilation:** Because the building is in a city centre, the devices should provide a summer ventilation strategy.
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   * **Frost protection:** For devices not equipped with a suitable frost protection strategy, appropriate additional steps must be taken.   * **Frost protection:** For devices not equipped with a suitable frost protection strategy, appropriate additional steps must be taken.
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   * **Condensation drain:** A solution for condensate drain (if necessary) must be described and included in the cost.   * **Condensation drain:** A solution for condensate drain (if necessary) must be described and included in the cost.
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   * All ventilation systems certified as Passive House components by the Passive House Institute are eligible for the award.    * All ventilation systems certified as Passive House components by the Passive House Institute are eligible for the award. 
  
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   * lifecycle costs (based on the PHPP-based analysis tool for ventilation systems), and   * lifecycle costs (based on the PHPP-based analysis tool for ventilation systems), and
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   * aspects such as practicability (suitability for step-by-step retrofits), the integration of the unit and ducts, design, space requirements and maintenance. An independent jury assessed these factors.   * aspects such as practicability (suitability for step-by-step retrofits), the integration of the unit and ducts, design, space requirements and maintenance. An independent jury assessed these factors.
  
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 ===== 7. References ===== ===== 7. References =====
  
-Component Award 2016 – cost-efficient ventilation for refurbishments of residential buildings, part of the EuroPHit project: www.europhit.eu +| [EuroPHit Project] |Component Award 2016 – cost-efficient ventilation for refurbishments of residential buildings, part of the EuroPHit project: www.europhit.eu| 
-Arbeitskreis kostengünstige Passivhäuser: Protokollband Nr. 50, Kostengünstige Lüftungslösungen für den Wohnbau. Passive House Institute, Darmstadt, 2015. +| [Passive House Institute 2015] |Arbeitskreis kostengünstige Passivhäuser: Protokollband Nr. 50, Kostengünstige Lüftungslösungen für den Wohnbau.| 
-Sibille, E.; Pfluger, R.: Die Anwendung aktiver Überströmer für die Verteilung in Wohnungen. In: Proceedings of the 19th International Passive House Conference 2015 in Leipzig, Germany, Passive House Institute, Darmstadt, 2015. +| [Sibille, E.; Pfluger, R. 2008] |Die Anwendung aktiver Überströmer für die Verteilung in Wohnungen. In: Proceedings of the 19th International Passive House Conference 2015 in Leipzig, Germany, Passive House Institute, Darmstadt.| 
-DIN EN 13779: Lüftung von Nichtwohngebäuden – Allgemeine Grundlagen und Anforderungen an Lüftungs- und Klimaanlagen, Beuth Verlag, Berlin, 2005. +| [Beuth Verlag 2008] |DIN EN 13779: Lüftung von Nichtwohngebäuden – Allgemeine Grundlagen und Anforderungen an Lüftungs- und Klimaanlagen|
  
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planning/refurbishment_with_passive_house_components/affordable_ventilation_solutions_for_retrofits_component_award_2016.1474903175.txt.gz · Last modified: 2016/09/26 17:19 by francis.bosenick@passiv.de