Solar Renovation of Non-Residential Buildings
Technology Position Paper
September 2015 - PDF 1.49MB - Posted: 2015-09-21
By: IEA SHC Task 47: Solar Renovation of Non-Residential Buildings, Fritjof Salvesen

The IEA’s Energy Technology Perspectives 2008 report shows that buildings are responsible for about 45% of the total energy consumption in OECD countries and 38% globally. More than half of the existing building stock will be standing in 2050 and more than 50% of the buildings in many OECD countries were built before 1970. The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020. This also includes the existing non-residential buildings, and a dramatic reduction in primary energy consumption will be needed.

Lessons learned from 20 Non-Residential Building Renovations
February 2015 - PDF 1.76MB - Posted: 2015-02-27
By: Fritjof Salvesen and Mari Lyseid Authen
Document Number: IEA SHC Report T.47.A.1
The report summarizes the findings from 20 exemplary renovation projects. The buildings are divided into three categories; educational buildings, office buildings and historic & protected buildings. In this summary chapter, the key findings from all the buildings are described. More detailed information for each building category is presented under the respective chapters.

Sustainable Refurbishments, School Buildings
A Guide for Designers and Planners
January 2015 - PDF 17.22MB - Posted: 2015-02-27
By: Sophie Trachte and André De Herde
The lack of comfort in most school buildings has negative and scientifically proven consequences on pupils’ concentration and learning. This is why school buildings have an urgent need of fundamental refurbishment. This guide provides designers with information and resources needed to retrofit school buildings in a sustainable and efficient way. The book is richly illustrated with explanatory diagrams and pictures.

Market Change: Upgrading of the non-residential building stock towards nZEB standard
Recommendations to authorities and construction industry
December 2014 - PDF 2.06MB - Posted: 2015-02-20
By: Trond Haavik and Paul Jacob Helgesen
This report includes desktop studies of available building stock information and ownership structures in partner countries and summaries made by task experts from participating countries. Interviews and in-depth descriptions of decision-making processes used in case studies from the participating countries are carried out in order to identify barriers and driving forces. Two workshops within the Task have been organized to discuss preliminary findings. Based on the above listed information, a cross analysis was chaired by the subtask leader with contribution from the task experts, to identify trends, commonalities and differences across the participating countries and draw conclusions about the decision making process.

Annex to the report
December 2014 - PDF 4.68MB - Posted: 2015-02-20
By: Trond Haavik and Paul Jacob Helgesen

Franciscan Monastery, Graz
January 2014 - PDF 2.57MB - Posted: 2014-09-29
By: Sophie Grünewald, TU Graz, Claudia Dankl, ÖGUT
The main part of this protected monument is from 1250 to 1650. Solar thermal collectors and heat pump, 92% energy saving, the final 8% plan to be covered by PV.

Kaiserstraße 7, Vienna; Austria
January 2014 - PDF 1.29MB - Posted: 2014-03-18
By: Walter Hüttler, Johannes Rammerstorfer
Monastery, listed Building from 1904 with residential use of the top floors. Primary energy demand reduced by 60%

Administration building Bruck/Mur - Austria
2014 - PDF 1.57MB - Posted: 2014-02-25
By: Dirk Jäger,BIG Bundesimmobiliengesellschaft
The office building from 1964 has several innovative features like a special façade, bivalent heat pump and lighting concept. 140 m2 PV modules on the roof. 85% reduction in heat demand.

TU Vienna Plus Energy - Austria
2014 - PDF 1.54MB - Posted: 2014-02-25
By: Helmut Schöberl, Richard Hofer, Schöberl & Pöll GmbH; Claudia Dankl, Hannes Warmuth, ÖGUT
The building from the 1970s renovated to a plus energy standard. Passive night-time cooling, and 336 kWp façade integrated PV system.

Refurbishment of the Riva Bella School - Belgium
2014 - PDF 1.97MB - Posted: 2014-02-25
By: Sophie Trachte; Contact : sophie.trachte@uclouvain.be
The semi-prefabricated building from 1970 renovated in 2010/12 at very low budget. Prefabrication and re-use as well as free and night cooling.

School Renovation Cesena, Italy
January 2014 - PDF 1.1MB - Posted: 2014-09-29
Presentation that outlines a major renovation of a primary school built in the 1960s. Includes building envelope, heating system, renewable energy system and lighting

Solbraaveien Office Center - Asker, Norway
January 2014 - PDF 1.03MB - Posted: 2014-02-01
By: Anna Svensson, Espen Aronsen
The building from 1980-82 has reduced the energy consumption to 60% while increasing the indoor air quality.

Rockwool International Office Building - Hedehusene, Denmark
December 2013 - PDF 1.27MB - Posted: 2014-02-01
By: Kirsten Engelund Thomsen and Jørgen Rose
The building from 1979 was renovated in 2013. Features heat pump, solar collectors and PV system.

Office and Workshop Building at Fraunhofer ISE - Germany
Fraunhofer ISE Campus
August 2013 - PDF 1.76MB - Posted: 2013-08-14
By: Doreen Kalz and Arnulf Dinke
Building from 1975 renovated in 2011. Wall insulation including ventilation ducts.

Powerhouse Kjørbo – Norway
August 2013 - PDF 1.6MB - Posted: 2013-08-14
By: Arne Førland-Larsen
Two office buildings from early 1980s are renovated to a plus energy standard using high insulation standard, PV and ground coupled heat pump.

Printing Workshop and Office Building - Germany
August 2013 - PDF 0.96MB - Posted: 2013-08-14
By: Doreen Kalz
Building from 1978 renovated in 2005 and 2011. Thermal comfort evaluated both in summer and winter condition.

Schüco Italian Headquarter - Italy
January 2013 - PDF 2.06MB - Posted: 2013-11-25
By: G. Pansa, T. Poli
The building from 1990 includes several solar energy installations; 600 kWp PV system, solar absorption chiller 15 kWf and 10 m2 solar collectors for DHW

Boligselskapet Sjaelland Office Building - Denmark
January 2013 - PDF 1.73MB - Posted: 2013-11-25
By: Jørgen Rose and Kirsten Engelund Thomsen
The office building from 1968 was extended with a penthouse to the top of the building. 130 m2 PV-system included.

Kampen School, Norway
January 2013 - PDF 1.4MB - Posted: 2013-03-12
By: Mads Mysen and Anna Svensson
A demonstration project where new concepts for energy efficient ventilation and lighting are integrated, using the existing ducts and demand control sensors.

School in Schwanenstadt - Austria
January 2013 - PDF 1.1MB - Posted: 2013-02-10
By: Claudia Dankl, Thomas Steffi and Susanne Supper
School building from 1960s with numerous expansions. Renovated in 2006/07 to meet the passive house standards.

Osram Culture Centre – Denmark
January 2013 - PDF 1.6MB - Posted: 2013-02-10
By: Jørgen Rose and Kirsten Engelund Thomsen
Built in 1953 as an industrial building and renovated in 2009. The first prefabricated building in Copenhagen.

Kindergarten Vejtoften - Denmark
October 2012 - PDF 1.3MB - Posted: 2012-10-19
By: Jørgen Rose and Kirsten Engelund Thomsen
Built in 1971 with minimal insulation standard. One of 27 kidergartens in the municipality that will undergo and extensive energy renovation. The method developed in this project will be applied in all the other kindergartens.

NVE Building - Norway
October 2012 - PDF 1.23MB - Posted: 2012-10-19
By: Anders Johan Almas, Michael Klinski, Niels Lassen
The office building was constructed through 1962 -64 fir the Norwegian Water Resources and Energy Directorate. Protected elements both internal and external. The first protected buiilding in Norway to be renovated to energy level B or better.

Norwegian Tax Authority Building Renovation - Oslo, Norway
June 2012 - PDF 1.17MB - Posted: 2012-07-02
By: Task 47
Presentation that outlines the renovation of the high-rise Norwegian Tax Authority building in Oslo, Norway. The renovation includes high insulated building facade, increased air tightness, energy recovery, and high efficiency technical systems.

Report on Life cycle analysis
Task 48 - Activities A2-B3 Final report
January 2015 - PDF 9.97MB - Posted: 2015-06-15
By: Marco Beccali, Maurizio Cellura, Sonia Longo, Pietro Finocchiaro, Tim Selke
Editor: Marco Beccali, Dipartimento di Energia, Ingegneria dell’Informazione e Modelli Matematici – Università degli Studi di Palermo
Publisher: Daniel Mugnier, TECSOL
This technical report describes the research activities developed within Subtasks A2 “Life cycle analysis at component level” and B3 “Life cycle analysis at system level”. Subtask A2 is focused on developing studies to assess the energy and environmental performances of components of solar cooling and heating (SHC) systems. In detail, the Life Cycle Assessment (LCA) approach applied to SHC systems, started by IEA Task 38, is further developed to give a ready to use collection of datasheets allowing estimating the energy and environmental impacts of different SHC systems during their life cycle. The results of the activities developed within Subtask A2 are used to update and complete a database of life cycle inventories for components of SHC systems, already developed within Task 38, to be used for the development of a LCA method tool. As outcome of Task 38, two machines have been already analysed: PINK PSC-10 (12 kW) with H2O/NH3 and SorTech AG ACS 08 (8 kW) with H2O/Silica Gel. In addition, the energy and environmental impacts of other components of SHC plants have been assessed (e.g. solar thermal collectors, gas boiler, pumps, etc.) starting from data of international LCA databases. As outcome of Subtask A2 of Task 48, the energy and environmental impacts of Pink PC19 Ammonia Chiller and of a Packed Adsorbed Bed have been assessed and the database of life cycle inventories for components of SHC systems, developed within Task 38, has been updated and completed. Furthermore the LCA database now includes solar PV components (photovoltaic panels, inverter, storage, etc.) giving the possibility to perform analysis on conventional systems which use renewable electricity with or without connection with the grid. Subtask B aims at developing a user-friendly LCA method tool, useful to calculate the energy and environmental impacts and the payback time indices of different SHC systems and to compare SHC systems and conventional ones. The tool contains the database developed in Subtask A2. An important step of the tool development has been the analysis of international LCA databases to check the LCA data availability for components of the SHC systems and for conventional equipment (pipes, pumps, electric components, photovoltaic panels, etc.). Within Subtask B, the results of the SolarCoolingOpt project are also illustrated.

Assessment of Technical Solution and Operational Management
June 2015 - PDF 10.66MB - Posted: 2015-10-29
By: Many authors
Editor: Doreen Kalz
The integration of components and subsystems into heating and cooling concepts and their interaction and optimization is a challenging work. However, it offers immense opportunities for energy savings. The recommendations presented in this report are derived from demonstration projects and the lessons learnt during the execution of the projects in the planning and construction phase, but also during operation.

Task47: Non-Residential Building Renovation – The Potential, Opportunities and Barriers
May 2015 - PDF 0.85MB - Posted: 2016-03-20
By: Fritjof Salvesen
A 50 - 90% reduction in heat consumption and a 50 - 70% reduction in overall energy demand are possible when renovating a building. Twenty exemplary renovation projects highlighted in SHC Task 47: Solar Renovation of Nonresidential demonstrate how this can be achieved. Two buildings of these buildings achieved the plus-energy standard and one of them received the highest possible BREEAM score of “Outstanding.” And, all these buildings used commercially available products and systems.

Task 47 Highlights 2014
May 2015 - PDF 1.2MB - Posted: 2015-05-31
By: Task 47
The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020. For the existing non-residential buildings, a dramatic reduction in primary energy consumption is crucial to achieve this goal. A few renovation projects have demonstrated that total primary energy consumption can be drastically reduced together with improvements of the indoor climate. However, most property owners are not even aware that such savings are possible, and they set too conservative energy targets. Buildings renovated to mediocre performance can be a lost opportunity for decades. It is therefore important that building owners are aware of such successes and set ambitious targets.

Task 47 Highlight 2013
Renovation of Non-­-Residential Buildings towards Sustainable Standards
February 2014 - PDF 0.35MB - Posted: 2014-03-03
The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020. For the existing non-residential buildings, a dramatic reduction in primary energy consumption is crucial to achieve this goal. A few renovation projects have demonstrated that total primary energy consumption can be drastically reduced together with improvements of the indoor climate. However, most property owners are not even aware that such savings are possible, and they set energy targets that are too conservative. Buildings renovated to mediocre performance can be a lost opportunity for decades. It is therefore important that building owners are aware of such successes and set ambitious targets.

Task 47 Highlights 2012
February 2013 - PDF 0.33MB - Posted: 2013-02-12

The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020.