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--- planning:refurbishment_with_passive_house_components:affordable_ventilation_solutions_for_retrofits_component_award_2016 [2016/09/28 13:28] – francis.bosenick@passiv.de
+++ planning:refurbishment_with_passive_house_components:affordable_ventilation_solutions_for_retrofits_component_award_2016 [2019/02/21 12:56] (current) – cblagojevic
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 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);
   * duct network optimised for pressure losses and high-quality air filters with low pressure losses;
   * constantly balanced operation (balance between supply and extract air flow); and
   * 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).
@@ Line 50: / Line 53: @@
 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.
-[{{:picopen:fig_3_comp.png?500|Figure 3: Floor plan of a three-room dwelling in a typical multi-family building complex from the 1960’s}}]
+[{{: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.
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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.
   * **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.
   * **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.).
   * **Summer ventilation:** Because the building is in a city centre, the devices should provide a summer ventilation strategy.
   * **Frost protection:** For devices not equipped with a suitable frost protection strategy, appropriate additional steps must be taken.
   * **Condensation drain:** A solution for condensate drain (if necessary) must be described and included in the cost.
   * 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
   * 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.