IEA SHC Task 59

IEA SHC Task 59 - Deep Renovation of Historic Buildings towards lowest possible energy demand and CO2 emissions (nZEB)

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IEA SHC Task 59
  • Project duration: April 2016 - February 2021
  • Project status:
    Approval by the Scientific Committee
  • Funding:
    Public institutions (Other projects /Project)
  • 0
  • Website: http://task59.iea-shc.org/

The project has the aim to promote the energy retrofit of historic buildings – as an important step to realize the huge potential for solar based renovation of the existing building stock.

Historic buildings make up a considerable part of our building stock und both to reach climate change mitigation targets and to preserve this important part of our cultural identity, we need to find conservation compatible energy retrofit approaches and solutions. The paradigm shift observed in the last 10 years – from “don’t touch these buildings” to “let’s find the right solutions together” – makes now a good moment to bring expertise on international level together, to join experiences from national projects and bring research and solution finding a step forward.

The project has the aim to promote the energy retrofit of historic buildings – as an important step to realize the huge potential for solar based renovation of the existing building stock.

Historic buildings make up a considerable part of our building stock und both to reach climate change mitigation targets and to preserve this important part of our cultural identity, we need to find conservation compatible energy retrofit approaches and solutions. The paradigm shift observed in the last 10 years – from “don’t touch these buildings” to “let’s find the right solutions together” – makes now a good moment to bring expertise on international level together, to join experiences from national projects and bring research and solution finding a step forward.

The new Task has been launched within the Solar Heating and Cooling Programme of the International Energy Agency as an initiative of the IEA SHC Task 37 and Task 47 consortia (who had worked on energy retrofit of residential resp. not residential buildings) and EURAC took over the coordination of the new Task proposal and is now operating agent. With the IEA SHC ExCo meeting in Spring 2016 the concept paper of the Task proposal was accepted and Task definition phase started, with the ExCo’s decision in Spring 2017 the project work plan and Annex were accepted and the project start in Autumn 2017 kicked off.

The structure of the Task includes (A) a Knowledge Base with the collection and assessment of Best Practice, (B) the Multidisciplinary planning process with the identification of replicable procedures on how experts can work together with integrated design to maintain both the expression of the building, and at the same time make it energy efficient, (C) Conservation compatible retrofit solutions and (D) Demonstration and dissemination

Main activities in 2017 were the final definition of the work plan and the Kick-Off of the Task in Autumn 2017 in Edinburgh. In 2018 the work on the single Subtask will start – for EURAC with inputs from projects like the hBATec, PLANfenster and LowTech as well as the Hygrothermal lab . Highlights will will be the spring meeting in Bozen and the autumn meeting on Gotland in accordance with the EEHB 2018 conference

Historic buildings make up a considerable part of our building stock (one fourth for Europe). They are the trademark of numerous cities, and they will only survive if maintained as a living space. This means, that in order to save this heritage for future generations, we need to find conservation compatible energy retrofit approaches and solutions, which allow to preserve the historic and aesthetic values while increasing comfort, lowering energy bills and minimizing environmental impact.

In the last 10 years a shift in paradigm could be observed: While in times of the first EPBD, a strong opposition from conservators and architects could be observed – “don’t touch these buildings” – there is growing a new openness, a much more constructive approach – “let’s find the right solutions together”. Examples for this development are last but not least the installation of the International Scientific Committee on Energy and Sustainability within ICOMOS and the development of “Guidelines for improving the energy performance of historic buildings” (EN16883) by the CEN TC 346 on Conservation of Cultural Heritage.Now is an important moment to identify and promote good approaches and solutions.

 

Realised examples show that a reduction of “Factor 4” (i.e. reduce the energy demand by 75%) and beyond is possible also in historic buildings preserving their heritage value – depending however on the specific case. While defining a minimum performance as for “standard” buildings does not make sense, when looking at the specific building, the design team should not “stop thinking” too early! A considerable reduction in demand – also thanks to optimisation of passive solar use – opens up the possibility to go with active solar contribution towards nZEB.

 

The Objectives of the Task are to

  • Develop a solid knowledge base on how to save energy in renovation of historic and protected buildings in a cost efficient way.
  • Identify the energy saving potential for protected and historic buildings according to typologies of building studied (residential, administrative, cultural…)
  • Identify and assess replicable procedures on how experts can work together with integrated design to maintain both the heritage value of the building and at the same time make it energy efficient
  • Identify and further develop tools which support this procedure and its single steps
  • Identify and assess conservation compatible retrofit solutions in a “whole building perspective”
  • Identify specifically the potential for the use of solar energy (passive and active, heating, cooling and electricity) and promote best practice solutions
  • Transfer knowledge

 

To reach these objectives IEA SHC will collaborate with the IEA EBC at a “Medium Level Collaboration”, and with the IEA PVPS at a “Minimum Level Collaboration”.

 

The Task is structured in the following SubTasks:

  • SubTask A. Knowledge Base
    Collection of Best Practice cases, following the approach of IEA SHC Task 37 and 47. Assessment of existing experience and identification of the energy saving potential. Special focus also on the decision context (why go for innovative solutions?) as well as monitoring and evaluation data. Subtask A will build on results from national and international research and demonstration projects, such as 3ENCULT, EFFESUS, RIBUILD, 4RinEU, “Gründerzeit mit Zukunft”, “Spara och Bevara” a.o.
  • SubTask B. Multidisciplinary planning process
    Identifcation of replicable procedures on how experts can work together to maintain both the expression of the building, and at the same time make it more energy efficient. Identification and further development of tools which support the process and its single steps.
    Starting from the procedure for selecting measures as presented in EN 16883 (Conservation of cultural heritage — Guidelines for improving the energy performance of historic buildings) it identifies the needs for support and tools beyond what the standard offers, for example on documentation and life cycle assessment, and aims to provide the end users with an integrated design platform
  • SubTask C. Conservation compatible retrofit solutions and strategies
    Identification of replicable solutions from case studies. Connection to and integration of ongoing R&D on conservation compatible retrofit solutions. Assessment of technical solutions from both energy and conservation point of view. Focus especially on (i) window solutions, (ii) internal insulation (hygrothermal performance and key indicators like drying potential), (iii) Building services and HVAC (with focus on ventilation with enhanced cascade systems and active overflow principle) and (iv) integrated solar systems.
  • SubTask D. Knowledge transfer and dissemination
    Expert workshops (possibly with participation of observers) on different themes in conjunction with the six-monthly expert meetings; Workshops for Professionals series linked to the expert meetings and relevant conferences (EEHB 2018, Docomomo 2018, ICOMOS 2019, EEHB 2020 etc.); Info slots at stakeholder events – presenting the Task’s results and bringing back stakeholders’ feedback to the expert group; Touring exhibition where visual presentation material will be used by all partners in the diverse events they are organising or participating in. A Task website will be developed, to provide information on the Task and its objectives, but especially on results and upcoming events. To keep the interest in the Task high, regularly news pieces and audio-visual contribution are uploaded and distributed via the SHC newsletter.
Publications
Conservation-compatible retrofit solutions in historic buildings: an integrated approach
Buda A, de Place Hansen EJ, Rieser A, Giancola E, Pracchi VN, Mauri S, Marincioni V, Gori V, Fouseki K, Polo López CL, Lo Faro A, Egusquiza A, Haas F, Leonardi E, Herrera-Avellanosa D (2021)
Journal article
Sustainability

More information: https://www.mdpi.com/2071-1050/13/5/2927

https://doi.org/10.3390/su13052927

http://hdl.handle.net/10863/16169

How Can Scientific Literature Support Decision-Making in the Renovation of Historic Buildings? An Evidence-Based Approach for Improving the Performance of Walls
Marincioni V, Gori V, de Place Hansen EJ, Herrera-Avellanosa D, Mauri S, Giancola E, Egusquiza A, Busa A, Leonardi E, Rieser A (2021)
Journal article
Sustainability

More information: https://www.mdpi.com/2071-1050/13/4/2266

https://doi.org/10.3390/su13042266

http://hdl.handle.net/10863/16366

Integration of Energy-Efficient Ventilation Systems in Historic Buildings—Review and Proposal of a Systematic Intervention Approach
Rieser A, Pfluger R, Troi A, Herrera-Avellanosa D, Engelund Thomsen K, Rose J, Arsan DA, Akkurt GG, Kompeinig G, Guyot G, Chung D (2021)
Journal article
Sustainability

More information: https://www.mdpi.com/2071-1050/13/4/2325

https://doi.org/10.3390/su13042325

http://hdl.handle.net/10863/15954

A new decision guidance tool for the adoption of energy retrofit solutions in historic building
Rieser A, Leonardi E, Haas F, Pfluger R (2021)
Conference proceedings article

Conference: SBE21 - Sustainable Built Heritage | online | 14.4.2021 - 16.4.2021

More information: https://sbe21heritage.eurac.edu/paper-725673/

Making deep renovation of historic buildings happen – learnings from the Historic Buildings Energy Retrofit Atlas
Haas F, Exner D, Herrera-Avellanosa D, Hüttler W, Troi A (2021)
Conference proceedings article

Conference: SBE21 - Sustainable Built Heritage | online | 14.4.2021 - 16.4.2021

More information: https://sbe21heritage.eurac.edu/paper-585117/

Inspiriert durch gute Beispiele
Troi A (2021)
Journal article
Südtiroler Landwirt
Inspiring good practices: Rainhof, a case study in the Italian Alps
Herrera D (2020)
Presentation/Speech

Conference: Webinar IEA SHC Solar Academy| Renovating Historic Buildings towards Zero Energy - Task 59 | online webinar : 28.1.2020 - 28.1.2020

Applied Research of the Hygrothermal Behaviour of an Internally Insulated Historic Wall without Vapour Barrier: In Situ Measurements and Dynamic Simulations
Andreotti M, Bottino-Leone D, Calzolari M, Davoli P, Dias Pereira L, Lucchi E, Troi A (2020)
Journal article
Energies

More information: https://www.mdpi.com/1996-1073/13/13/3362

https://doi.org/10.3390/en13133362

http://hdl.handle.net/10863/14579

Dynamic thermal and hygrometric simulation of historical buildings: Critical factors and possible solutions
Akkurt GG, Aste N, Borderon J, Buda A, Calzolari M, Chung D, Costanzo V, Del Pero C, Evola G, Huerto-Cardenas HE, Leonforte F, Lo Faro A, Lucchi E, Marletta L, Nocera F, Pracchi V, Turhan C (2020)
Journal article
Renewable and Sustainable Energy Reviews

More information: https://www.sciencedirect.com/science/article/pii/S136403211 ...

https://doi.org/10.1016/j.rser.2019.109509

What Are the Implications of Climate Change for Retrofitted Historic Buildings? A Literature Review
Hao L, Herrera-Avellanosa D, Del Pero C, Troi A (2020)
Journal article
Sustainability

More information: https://www.mdpi.com/2071-1050/12/18/7557

https://doi.org/10.3390/su12187557

Partner
Ferrara University
Uppsala University - Campus Gotland
Belgian Building Research Institute
Fundacion CARTIF
Tecnalia - Parque Científico y Tecnológico de Gipuzkoa
Politecnico di Milano
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
University of Cincinnati
Cupagroup Innovation
Danish Building Research Insititute
University of Genoa
Carrig
Historic Environment Scotland
e7 energie markt analyse
Université catholique de Louvain
University of Innsbruck, Faculty of Engineering Science, Institute for Structural Engineering and Material Sciences

Contact

Daniel Herrera Gutierrez Avellan

Project managerT 307 550 1740 93+ude.carue@arerreh.leinad

Alexandra Troi

Vice project managerT 206 550 1740 93+ude.carue@iort.ardnaxela

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