ReValue

Project: Research

See relations at Aarhus University

Description

The common goal and vision for the project
Denmark aims for a CO2 neutral society by 20501. This ambitious goal cannot be obtained without a drasticallyreduced energy use for construction and operations of buildings. Buildings are responsible for 40-50% of the total European energy consumption today and it has been found that the greatest energy saving potential lies in the renovation of the existing building mass. It is estimated that the existing energy consumption for Danish buildings should be reduced by 73% to meet the ambition of a CO2 neutral society2. 75% of the buildings that exist today willstill be in operation in 20402. Hence, a considerable amount of the existing building mass must undergo a substantial energy renovation to comply with the ambition of a CO2 neutral society. Recent studies have calculated that cost-efficient energy renovation of the building envelope and technical installations of the existing building mass will only lead to an energy reduction of 20-35%1. It is the declared goal of Innovation Fund Denmark’s societal partnership on Energy-efficient building renovations that a sustainable and cost-efficient energy reduction of 50% is demonstrated in this project. This calls for the identification and quantification of added value to energy renovation that can justify more extensive energy saving measures. 
The largest potential for energy savings lies in the re-insulation of the building envelope. The transformation towards a more energy-efficient building mass will thus dramatically affect the built environment. Hence, the question of articulating the architectural consequences and derived potentials of this transformation are an urgent matter if the energy savings are not to be realized by a uniform technical cladding which devaluates the building. The challenge of transforming the building mass to become more energy-efficient not only calls for technical development and innovation but to a great extent also calls for the development of an architectural strategy,which is capable of articulating and realizing the architectural potential within the transformation process and thereby add value. The architectural aspects were clearly addressed in the report “Strategy for energy renovation of buildings”: [There is great potential for reducing energy consumption in existing buildings. We can exploit this potential if we choose cost-effective and energy-efficient solutions every time the buildings are renovated. That does not mean compromising on the quality and architectural values that make the buildings special. On the contrary: energy renovation should be a means of improving and developing buildings to meet the needs and challenges of the future and of making home-owners and tenants less vulnerable to rising energy costs in the future]2. The vision of the RE-VALUE project is totally aligned with this statement. 
The main purpose of buildings is to provide healthy and comfortable environments for human activities. People spend 80-90 % of their life indoor and about 16 hours every day in their dwelling. The impacts that people are exposed to in the indoor climate are, therefore, of great importance for their health and comfort. Currentresearch and practice have shown that people too often are unsatisfied with the buildings they use and that complaints concerning health and comfort are common. But research also connects good indoor climate to the better quality of life, reduction of health care cost, less absence due to sickness and superior work. Consequently,there is a significant and unexploited personal and societal value in realizing energy saving potentials with special attention to “the human factor”.
To further progress from the 20-35% energy reduction, and thus achieve added value, the construction process needs to be sustainable also. Up to 20% of Life Cycle Energy belongs to embedded energy, among others arising from the construction process and on-site production. Logistics, site management, efficient planning,collaboration, and user interactions is pointed out as central factors of a sustainable construction management process 3. The RE-VALUE project will incorporate these factors in a holistic framework for the future renovation process, documenting how added value can be obtained. This assessment framework will build upon input from technical solutions, architectural solutions, indoor climate and health solutions, and sustainable construction process solutions. 
The framework will take outset in the Totalværdi modellen, which will be further developed to estimate how much added value a renovation project can generate to the client, the users, and society. Two of the key partners will put real renovation projects to RE-VALUE’s disposal, allowing the consortium to have 1:1 demonstration projects to play with. One of the renovation projects is the transformation and renovation of Gellerup and Toveshøj in Aarhus, a 1 billion DKK project. The future market for energy renovation of housing is, in general, large. In Aarhus, the amount of social housing renovation projects is calculated to 11,8 billion DKK4. In Denmark, renovation of social housing is expected to add up to 38 billion DKK by 2020. Internationally the market for energy renovation of housing is tremendous, and many reports indicate that more than 40% of Europe’s building stock needs extensive energy renovation in near future. RE-VALUE will pursue an international exploitation strategy, exporting Danish know-how on sustainable construction to EU and World Wide.
Short titleValue Creation by Energy Renovation, Refurbishment and Transformation of the Built Environment – Modelling and Validating of Utility and Architectural Value
StatusActive
Effective start/end date01/02/2016 → …

ID: 147325301