The outPHit project is resulting in a number of interesting outcomes – be they informational materials, guidelines, protocols or tools. While most will also be published on this website under the corresponding categories, this list should serve to give an overview of the most interesteing project deliverables.
Energy Performance of Buildings Directive revision
The Passive House Institute (PHI) welcomes the European Union's efforts to reduce greenhouse gas
emissions. PHI recognises the recent attempt to introduce more clearly defined Zero Emission Build-
ings and minimum performance standards in building renovation to improve the building stock of the
EU Member States towards climate neutrality. However, we fear that, particularly in building retrofits
[LM1], the minimum requirements for the Member States will not be sufficient to reduce the energy
demand of buildings to such an extent that they can be met with renewable sources only. We rec-
ommend further specifications and more ambitious requirements, specifically in building renovation.
Summer Comfort Guidelines
With warming climate conditions, the topic of resilience to overheating is becoming increasingly important. High indoor temperatures are a matter of comfort and are highly related to health. This guideline for summer comfort has been written to raise awareness and aid building designers in developing a robust strategy to ensure thermal comfort all year round. The provided design aid helps identify effective passive cooling techniques and analyse potential summer comfort risks of a project.
Summer Comfort User Manual
In order to prevent misunderstandings and to ensure the building will perform as intended once in use, the chosen summer comfort strategy should be sufficiently explained to the future users. This template for a summer comfort user manual already contains some general recommendations and can be expanded with project specific user instructions e.g. for the ventilation strategy.
Simplified monitoring approach for energy parameters
High quality deep retrofits not only reduce energy consumption to sustainable levels but also make for even surface temperatures, heightened thermal comfort and appreciably improved indoor air quality. The approach thus describes a pre and post retrofit monitoring process for energy relevant data as well as for indoor air quality including mould and airborne fungal spores.
Instructions for adequate monitoring equipment for living quality assessment
Deep retrofits offer the unique advantage to not only reduce energy consumption to sustainable levels and cover a large part of the residual demand with on-site RES but also implement a holistic improvement of the indoor environment. The large number of projects in a wide geographical area that are investigated as demonstration projects of the outPHit project offer the unique opportunity to apply a uniform sampling and evaluation method and derive comparable results. Here a documentation of the methodology of sampling and evaluation. Because the measurement of air quality should be done simultaneously with the collection of energetic measurement data, this document refers on the simplified monitoring approach for energy paramenters whereas the measurement of the air quality is depicted in more detail.
Adequate Net Zero Rating Approach
As outPHit and the EU strive for a sustainable future it is vital to pick the appropriate yardstick. Inappropriate incentives could cause lock-in effects at a later date even if they sound reasonable at first glance. This approach picks up on the claims of the most discussed concepts and how they may steer the development and thus helps project managers navigate through the different concepts of “net zero” to ensure a reliable and robust assessment of building concepts with regard to carbon emissions and the transition to renewable energy sources.
Renovation approach documents
Detailed descriptions of the renovation approaches employed for many of the project's case studies are for download in the information section of each case study on the outPHit website. These documents deliver insight into how various outPHit case studies are being retrofitted to meet the EnerPHit standard for renovations in line with Passive Houe principles.and provide a comprehensive overview of each building in question, its condition before the retrofit and the planned improvements in terms of air tightness, technical systems, insulation and building components.
Description of a whole house renovation system certification concept
Through a certification process of such renovation systems, the quality of the system, the overall component performance, but also including critical points such as thermal bridges, airtightness or ventilation heat recovery, can be assured to fulfil the ambitions required for deep renovation projects, such as EnerPHit retrofits. Furthermore, through the examination by the certification process, specific performance values of the deep renovation systems are determined and made available, by transparently describing U-values, thermal bridge coefficients or ventilation heat recovery efficiency within the certificate so these values can reliably be used for the energy efficiency planning of the renovation projects. By offering approved descriptions of the airtightness concept and further information about the systems, stakeholders applying such renovation concepts can select a better renovation system.
Description of a certification scheme on "verified building performance"
This report outlines the concept developed to measure and evaluate the performance of deep retrofit projects implementing the outPHit methodology in the field. Efforts are made to streamline and automate most steps to make the building performance evaluation process, with sound consideration of measuring uncertainty, accessible to new target groups, such as architects and engineers or even builders. A procedure to systematically evaluate elementary living quality parameters has been identified.
Description for a design-stage-approval concept
This paper aims to draft a concept for the design stage approval concept (DSA) and the resulting document Design Stage Approval Letter (DSAL). The approach will be applied to the outPHit renovation projects and will help the involved parties achieving the desired efficiency standard. The results of this test will be integrated into the final version of the DSA concept.
District evaluation reports from Greece, Austria, Bulgaria and Germany
This study of renovation scenarios in a Greek, Bulgarian and an Austrian district as well as for all of Germany shows how renovations carried out with a rigorous focus on superior energy performance can avoid lock-in effects, leading to vast energy savings and significantly lower emissions, even at consistently more comfortable indoor temperatures. The scenarios for each district were conducted with DistrictPH, an open-source, excel-based tool developed by the Passive House Institute, capable of calculating detailed energy balances for entire districts as well as their development over time.
Political recommendations on the basis of the German scenarios in this study: Towards a climate-compatible building stock