examples:non-residential_buildings:passive_house_schools:central_europe:riedberg_passive_house_school_frankfurt_germany
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examples:non-residential_buildings:passive_house_schools:central_europe:riedberg_passive_house_school_frankfurt_germany [2010/11/16 09:32] – aespenberger | examples:non-residential_buildings:passive_house_schools:central_europe:riedberg_passive_house_school_frankfurt_germany [2014/09/18 18:19] (current) – external edit 127.0.0.1 | ||
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+ | ====== Riedberg Passive House School, Frankfurt, Germany ====== | ||
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+ | With the Riedberg school and day nursery, the City of Frankfurt is now moving in the direction of the Passive House Standard. The resolutions of the City Council in the year 2002 already stated that “all future kindergartens and schools will be built in the Passive House construction method”. These decisions were repeated in the urban administration report of 2003 and in the coalition agreement of 2006. The emphasis here was on the improved quality of air with low CO< | ||
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+ | [[http:// | ||
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+ | ===== The Riedberg Passive House School Riedberg | ||
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+ | {{: | ||
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+ | ===== Results of the measurements ===== | ||
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+ | ==== Summertime comfort ==== | ||
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+ | There were high ratings for the thermal comfort in classrooms during the winter, **the indoor air and indoor surface temperatures** differ only slightly from each other. In the winter of 2005/2006, the temperatures were **between 19.5 and 20.6 °C** during usage periods (8:00 to 13:00 o’clock). The relative humidity of the air was low but still within an acceptable range. | ||
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+ | During the summers of 2005 and 2006 that were studied, the hours of overheating in the classrooms on the ground floor were considerably less than the admissible limit values. Mostly, the temperature limit of 27 °C was not achieved, for 10 % of the usage period, it could even be exceeded. **In the warmer summer of 2006, the average summer temperature during the usage period was 22.9 °C**. On the whole, good summer comfort could be proven and thus also the effectiveness of the summer ventilation concept with two facade shutters for each classroom. Therefore, in correlation with the project planning, an air conditioning system was not necessary.\\ | ||
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+ | ==== Air quality ==== | ||
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+ | An acceptable quality of indoor air with **16.4 m³/ | ||
+ | The measured **concentrations of CO< | ||
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+ | ==== Ventilation system ==== | ||
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+ | The ventilation system produces a good result with a heat recovery rate of 84.2 % for the practical measurement during the winter period. The electrical efficiency criterion is thus maintained at 0.43 Wh/m³. Due to the length of the cold ventilation ducts through the building, **the effective heat recovery rate** unfortunately decreases to **74 %**. This shows that cold ducts leading through the building should be as short as possible even if they are insulated.\\ | ||
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+ | ==== Heating consumption ==== | ||
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+ | The **heating consumption** of the school and day nursery including that of the kitchen showed very low values of **25.4 kWh/m²** in the winter of 2005/2006, __**with savings of around 90 % in comparison with other existing schools**__. In the kitchen, energy was unnecessarily consumed by addition ventilation; | ||
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+ | The **treated floor area** (TFA = 5541 m²) was used as a basis for the whole analysis. The area A< | ||
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+ | As expected, the daily average **heating outputs** were low with a maximum of **12.2 W/m² for the school** and **15.1 W/m² for the day nursery**.\\ | ||
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+ | About the TFA and A< | ||
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+ | ==== Energy balance ==== | ||
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+ | The **annual electricity consumption **for the school/day centre/ | ||
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+ | The energy balance results in: | ||
+ | * a **final energy value** of only **50.9 kWh/ | ||
+ | * and only **59.2 kWh/ | ||
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+ | **The requirements for the Passive House Standard are therefore more than fulfilled (maximum primary energy 120 kWh/ | ||
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+ | ===== Evaluation ===== | ||
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+ | **In statistics for 177 existing schools, the heating consumption **was greatly scattered with an average value of more than **200 kWh/ | ||
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+ | |{{ : | ||
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+ | The admissible limit value for primary energy based on the building volume is **18.3 kWh/ | ||
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+ | ===== Summary ===== | ||
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+ | The accompanying research has shown that the objectives of the project were met. The results were a high level of comfort with energy savings of 90 % and a very good assessment of the primary energy. The quality of the indoor air - measured as the concentration of CO< | ||
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+ | ===== See also ===== | ||
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+ | [[planning: | ||
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+ | [[Planning: | ||
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+ | [[examples: | ||
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+ | ===== Literature ===== | ||
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+ | **[AkkP 33]** Passive House Schools, Protocol Volume No. 33 of the Research Group for Cost-efficient Passive Houses Phase III, Passive House Institute, Darmstadt 2006.\\ | ||
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+ | **[Bretzke 2005]** Bretzke, A.: Planning and Construction of the Passive House Primary School in Kalbacher Höhe 15, Frankfurt am Main, 2005: {{: | ||
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+ | **[Peper 2007]** Søren Peper, Oliver Kah, Rainer Pfluger, Jürgen Schnieders: Passive House School in Frankfurt Riedberg: Metrological study and analysis, 1st Edition, Passive House Institute, 2007.\\ | ||
+ | **The complete Final Report** has been released by the City of Frankfurt (186 pages, 5.14 MB). It can be downloaded free of charge as a PDF file: [[http:// | ||
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+ | **[PHPP 2007]** Feist, W.; Pfluger, R.; Kaufmann, B.; Schnieders, J.; Kah, O.: Passive House Planning Package 2007, Passive House Institute Darmstadt, 2007. See page on [[Planning: | ||