operation:operation_and_experience:measurement_results:energy_use_measurement_results
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operation:operation_and_experience:measurement_results:energy_use_measurement_results [2015/11/16 18:28] – kdreimane | operation:operation_and_experience:measurement_results:energy_use_measurement_results [2022/09/16 12:38] (current) – [Literature] wfeist | ||
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====== Energy efficiency of the Passive House Standard: Expectations confirmed by measurements in practice ====== | ====== Energy efficiency of the Passive House Standard: Expectations confirmed by measurements in practice ====== | ||
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===== 1. Measurements results for the Passive House Standard ===== | ===== 1. Measurements results for the Passive House Standard ===== | ||
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===== 2.4. Low-energy house projects in the UK ===== | ===== 2.4. Low-energy house projects in the UK ===== | ||
- | Performance tests of the building envelope were carried out for 25 different buildings. The heat loss per Kelvin temperature difference was determined for the entire building (co-heating test). The measurement by Johnston et al. included 22 low-energy projects and three Passive House buildings [[Operation: | + | Performance tests of the building envelope were carried out for 25 different buildings. The heat loss per Kelvin temperature difference was determined for the entire building (co-heating test). The measurement by Johnston et al. included 22 low-energy projects and three Passive House buildings [[Operation: |
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+ | ===== 2.7. Passive House residential building " | ||
+ | Completed and inhabited in 2017, the Passive House “BuildTog” in Bremen-Findorff of GEWOBA Bremen has 16 rental apartments with a heated living area of 1,478 m². The solid construction building was planned by the architectural office “Planungsgruppe DREI” from Mühltal near Darmstadt. The building services were planned by “Ingenieurbüro Lachnit” from Roßdorf near Darmstadt. The building is supplied by district heating (heating and hot water), and all apartments are connected by a central ventilation system in the basement. | ||
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+ | The evaluation of the energy consumption values in the flats, including the proportion of usable heat distribution and the minimum amount of frost protection of the central ventilation, | ||
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+ | A residents’ survey shows a very high overall satisfaction with the building in general and the Passive House technology in particular (88% “rather satisfied”, | ||
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__Below:__ Thermographic image of the buildings before (left) and after (right) the refurbishment. The improved thermal quality is clearly apparent from the uniformly low surface temperature.// | __Below:__ Thermographic image of the buildings before (left) and after (right) the refurbishment. The improved thermal quality is clearly apparent from the uniformly low surface temperature.// | ||
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Evaluation of an identically constructed non-refurbished building located at a distance of 300 m at the same time resulted in an average heating consumption of 141 kWh/ | Evaluation of an identically constructed non-refurbished building located at a distance of 300 m at the same time resulted in an average heating consumption of 141 kWh/ | ||
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Starting in the year 2000, four different projects relating to refurbishment with Passive House components were realised in Nuremberg by the architect Burkhard Schulze Darup on behalf of the housing association wbg Nürnberg GmbH Immobilienunternehmen. The four projects (Jean-Paul-Platz, | Starting in the year 2000, four different projects relating to refurbishment with Passive House components were realised in Nuremberg by the architect Burkhard Schulze Darup on behalf of the housing association wbg Nürnberg GmbH Immobilienunternehmen. The four projects (Jean-Paul-Platz, | ||
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In all four projects, consumption values were measured and documented after the successful refurbishments [[Operation: | In all four projects, consumption values were measured and documented after the successful refurbishments [[Operation: | ||
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An airtight building envelope is a key component in energy efficient buildings. The airtightness test offers an easy way to check this requirement for every building and carry out any improvements that are necessary. A higher quality of airtightness is required in Passive Houses with n< | An airtight building envelope is a key component in energy efficient buildings. The airtightness test offers an easy way to check this requirement for every building and carry out any improvements that are necessary. A higher quality of airtightness is required in Passive Houses with n< | ||
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* Unordered List ItemThe individual measures, namely thermal insulation, triple low-e glazing, airtightness and heat recovery ventilation are effective. Deviations of more than about 1 kWh/ | * Unordered List ItemThe individual measures, namely thermal insulation, triple low-e glazing, airtightness and heat recovery ventilation are effective. Deviations of more than about 1 kWh/ | ||
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* Unordered List ItemThe calculation method based on the PHPP and the applied boundary conditions proved successful in practice. The differences between the calculated balance and the measured values were very small. The oft-bemoaned ' | * Unordered List ItemThe calculation method based on the PHPP and the applied boundary conditions proved successful in practice. The differences between the calculated balance and the measured values were very small. The oft-bemoaned ' | ||
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* Unordered List ItemBased on the present consumption statistics, additional heat losses, such as the transmission heat losses or high heat losses due to window ventilation cannot have a decisive influence; these must be within the determined limits with ±1 kWh/(m²a) and are therefore negligible. | * Unordered List ItemBased on the present consumption statistics, additional heat losses, such as the transmission heat losses or high heat losses due to window ventilation cannot have a decisive influence; these must be within the determined limits with ±1 kWh/(m²a) and are therefore negligible. | ||
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**[Johnston 2014]** D. Johnston, D. Farmer, M. Brooke-Peat & D. Miles-Shenton (2014): “Bridging the domestic building fabric performance gap”, Building Research & Information, | **[Johnston 2014]** D. Johnston, D. Farmer, M. Brooke-Peat & D. Miles-Shenton (2014): “Bridging the domestic building fabric performance gap”, Building Research & Information, | ||
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+ | **[Johnston 2020]** David Johnston, Mark Siddall, Oliver Ottinger, Soeren Peper und Wolfgang Feist: **Are the energy savings of the passive house standard reliable? A review of the as-built thermal and space heating performance of passive house dwellings from 1990 to 2018**; Energy Efficiency (2020) 13: | ||
**[Krellner 2015]** Krellner, Marcus: Jährliche Ablesewerte der Wärmezähler der vier Doppel-haushälften in Nürnberg-Wetzendorf (German only; Annual heat meter readings of four semi-detached houses in Nuremberg-Wetzdorf). Private supply data, July 2015 | **[Krellner 2015]** Krellner, Marcus: Jährliche Ablesewerte der Wärmezähler der vier Doppel-haushälften in Nürnberg-Wetzendorf (German only; Annual heat meter readings of four semi-detached houses in Nuremberg-Wetzdorf). Private supply data, July 2015 | ||
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**[Peper/ | **[Peper/ | ||
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+ | **[Peper 2021]** Peper, S.: Passivhaus BuildTog Bremen-Findorff, | ||
**[PHPP]** Passive House Planning Package. Passive House Institute, 1998 - 2015 | **[PHPP]** Passive House Planning Package. Passive House Institute, 1998 - 2015 |
operation/operation_and_experience/measurement_results/energy_use_measurement_results.1447694924.txt.gz · Last modified: 2015/11/16 18:28 by kdreimane