Renovation of Modernist Housing Developments in the Pursuit of Modernity for Well-Being and Clean Energy (original) (raw)
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Energies
The aim of the study was to identify the state of residential buildings in terms of energy consumption and modernisation in Poland against the background of the EU, and to determine factors and activities increasing households′ interest in net-zero energy buildings. In the European Union, we are observing a tendency to increase the energy efficiency of buildings, including residential, and decarbonise building stock by 2050. The objective of the undertaken activities is to reduce energy use and the negative impacts of the use of buildings on the environment. Attaining this objective requires modernising many buildings. This dissertation includes an investigation into the condition of buildings in Poland from the aspect of energy use and the kind of carriers of this energy, and also into another issue: what factors and activities may increase society′s interest in net-zero energy buildings, and in the use of energy from renewable sources in residential buildings. The studies were con...
Engineering for Rural Development, 2024
The article analyses the results of the 2016-2023 national programme of multi-apartment building renovation in Latvia, being importantly co-financed by ERDF, and there was used the publicly available database of this programme implementation, as of 31st December 2023. This was complementary analysed during the six deep semi-structured interviews with main stakeholders and experts at the municipal level particularly. Valmiera city and county municipality was chosen for a case study as one of the most pro-energy active municipalities in the country, having developed and introduced a complementary set of energy governance instruments. The challenges are particularly related to the management and economic aspects and their interconnection with engineering ones as being identified. Within 2016-2023 in total around 22.8 thousand apartments (over 620 buildings) are renovated at national scale, however that is only around 4% of the total number of apartments. The planned thermal energy savings constitute around 0.9% of the total final energy consumption of the household sector in Latvia as being the high impact. High energy efficiency for heating is achieved in the renovated buildings (after renovation, the "B" energy efficiency class is achieved on average), however, the low number of renovated buildings still limits the impact of the programme. The renovation projects have a long (around 30 years in average) payback period, if compared with the actual district heating tariffs, thus, such renovation is hardly possible without the public grant part. Particularly, for completed projects in 2023 the specific costs significantly increase. The renovation of apartment buildings is analysed in the context of the energy citizenship (ENCI) concept. About 60% of building renovation are carried out by the legal institutional forms established by apartment owners, particularly, housing associations registered as NGOs. During the renovation of buildings, zero-emission decentralized energy production technologies are not installed until now, only few examples can be noted. Although the requirements of this renovation programme allowed, it could be assumed that the overall management and economic conditions were not enough attractive for the promotion of pro-sumerism for households or organizations to practice bothproduce and consume energy.
Among other pieces of architectural historical heritage in Sarajevo, and Bosnia-Herzegovina in general, the Austro-Hungarian architecture has preserved its original architectural, artistic and engineering characteristics. Both residential and public representative urban blocks, streets and squares are of distinguishable ambience in the architectural and urban image of the city and are testifying about our architectural past. A number of buildings is valorised and protected by law in terms of their architectural, artistic and historical value. In addition, these buildings have a distinct functional, ambiental, historical, and even aesthetical value. To make them last longer, refurbishment of these buildings is challenging and presents potential and multiple benefits for the city, and beyond. Refurbishing built environment through functional reorganizing, redesign and energy efficiency measures applications could result in prolonged longevity, architectural identity preservation and interior comfort improvement. Besides, implemented measures for energy efficiency, through the refurbishment process, should optimize the needs for energy consumption in treated buildings. This paper defines options in comfort improvements and redesign, without implying risks to the building longevity, analyses interventions and energy efficiency measures which would enable potential energy saving assessment in the refurbishment process of masonry buildings. This paper also discusses the different techniques that can be adopted for conservation and preservation of historical masonry buildings from the Austro-Hungarian period dealing with energy efficiency. The works were preceded by historical research and on-site investigations. This paper describes a methodology to quantify their vulnerability. A scheme of structural retrofitting is suggested following the research conducted. Revitalization of the building consisted in the reconstruction of the old building structure, creating the inner courtyard and covering it with a glass roof.
Transformation through Renovation: An Energy Efficient Retrofit of an Apartment Building in Athens
Procedia Engineering, 2017
A 7 story social housing apartment building in Athens, Greece has been renovated following a holistic energy efficient retrofit process. The retrofit plan, resulting from tenant surveys, environmental parameters monitoring and extensive energy simulations, included commercially available technologies like insulation and energy efficient windows, innovative technologies like energy efficient lighting and smart coatings, passive techniques like night ventilation as well as RES, aiming to transform this inefficient building into a near zero energy one, achieving a reduction of the energy consumption and CO 2 emissions by 80% and significant improvement of thermal comfort conditions. An experimental campaign has been executed in order to measure and validate the energy savings and indoor comfort conditions before and after the retrofit. The results of this monitoring procedure are reported and analyzed. Measurements include air leakage and thermal imaging for determining leakage rate and heat loss through the building fabric, smart meters to record energy consumption and indoor and outdoor environmental measurements. The opinion of the occupants is taken into account through pre-and post-retrofit surveys.
Methodology for the energy renovation of the historic residential stock of the east extension in Brussels. ARÁNZAZU GALÁN GONZÁLEZ, Building, Architecture and Town Planning, Université Libre de Bruxelles (ULB), Brussels, Belgium, Aranzazu.Galan.Gonzalez@ulb.ac.be MILENA STEVANOVIC, Building, Architecture and Town Planning, Université Libre de Bruxelles (ULB), Brussels, Belgium, Milena.Stevanovic@ulb.ac.be CONSOLACIÓN ANA ACHA ROMÁN Construcción y Tecnología Arquitectónica, Escuela Técnica Superior de Arquitectura de Madrid (ETSAM), Madrid, Spain, consolacionana.acha@upm.es PHILIPPE BOUILLARD Building, Architecture and Town Planning, Université Libre de Bruxelles (ULB), Brussels, Belgium, Philippe.Bouillard@ulb.ac.be Keeping the historical heritage alive is part of European culture. There are a huge number of historical buildings in Europe, the majority of which are still wasting large amounts of energy [1]. Although a certain degree of caution should be maintained when thinking up renovation plans for historical buildings, the simple argumentation that they can't in anyway be adapted to integrate new renewable energy installations for fear of changing their nature and appearance is not endurable in the societal move towards sustainability [3]. This study defines a pre-assessment methodology for the retrofitting of historical building stock in the east extension in Brussels and the rules to understand the factors influencing the efficiency measures applied. Beginning with the evaluation of the building stock characteristics and its urban structure context under a holistic approach, we are able to identify the synergies and/or incompatibilities between the different techniques applied. The result is a tool that identifies in an early stage the benefits or impacts of different actions and the solutions that better fits, achieving an energy efficiency improvement from a technical, legal and economic point of view. ABSTRACT: Keeping the historical heritage alive is part of European culture. There are a huge number of historical buildings in Europe, the majority of which are still wasting large amounts of energy [1]. Although a certain degree of caution should be maintained when thinking up renovation plans for historical buildings, the simple argumentation that they can't in anyway be adapted to integrate new renewable energy installations for fear of changing their nature and appearance is not endurable in the societal move towards sustainability [3]. This study defines a pre-assessment methodology for the retrofitting of historical building stock in the east extension in Brussels and the rules to understand the factors influencing the efficiency measures applied. Beginning with the evaluation of the building stock characteristics and its urban structure context under a holistic approach, we are able to identify the synergies and/or incompatibilities between the different techniques applied. The result is a tool that identifies in an early stage the benefits or impacts of different actions and the solutions that better fits, achieving an energy efficiency improvement from a technical, legal and economic point of view.
Feasibility of energy saving renovation measures in urban buildings
Energy and Buildings, 2002
The energy renovation of existing buildings is an important tool for the reduction of energy consumption in the building sector, the improvement of prevailing indoor thermal comfort conditions and also for the improvement of environmental conditions in urban areas. At the same time, it is a technical, economic and social problem, due to the way in which many cities have been built and the restrictions imposed by economic constrains that tantalise most countries in South-Eastern Europe, and also Greece. It applies particularly in Northern Greece, with its cold and prolonged heating season, where a series of studies was carried out since 1994 to approach the problem and develop viable proposals. Public and mixed-use buildings form a signi®cant part of the building stock and are therefore a primary candidate for energy saving measures, especially as they also play the role of a`pilot-demonstrator' for the private owned buildings. However, due to the low energy prices that prevailed over the last 10 years, and as energy saving measurements are capital intensive investments, little was done in that direction. The recent sharp increase in oil prices proved that this was a short-sighted policy. In the following paper are presented the results of a study that aimed to determine the potential of energy saving renovation measures, in a representative sample of buildings under realistic conditions, to evaluate the feasibility of these measures, and also the way in which this feasibility is being analysed, under the rapidly changing economic conditions. #
Economical and energy restraint affecting Europe lead contemporary architecture to focus on the renovation of historical building stock. In need of enhancing the energy performance of the Italian cultural heritage, the aim of this research is to investigate a refurbishment model that supplies strategies for non-monumental historical districts for the fulfilment of the general criteria of cultural, environmental and economic valorisation through an integrated design that combines principles of innovation and conservation, minimum intervention and energy efficiency. Operating on the refurbishment of historical villages in central Italy, this paper focuses on the refurbishment of the historical rural burg " Le Pagliara " (Opi). A strategic framework seeks to reactivate and expand its original productive character; it aims at recovering the architectural typology while enhancing energy performances and achieving microclimatic comfort, in compliance with regulated performance requirements and innovative models of traditional spaces in terms of access, management and equipment. State of the art The directive 2012/27/UE on energy efficiency to be adopted by Member States in each legal order within the 5 th of June 2014, sets common measures for energy efficiency promotion within the European Community. The most significant innovation is the introduction of energy refurbishment for existing buildings: Member States are supposed to adopt a long term strategy to mobilize investments for the energy renovation of the national building stock 1. In particular, this strategy should include: a review of the national building stock; the identification of effective refurbishment approaches in terms of costs, building type and climate zone; an evaluation based on the expected energy savings and the benefits in the broadest sense. Along with cultural heritage protection projects [1], European Strategy on the Urban Environment [2] focuses on strengthening urban communities identity and enhancing urban quality of life, as a major opportunity to focus resources specifically for energy retrofitting of historic centres and districts [3]. As pointed out by 3ENCULT European project [4], historic building stock is extremely heterogeneous and requires specific interventions to protect and enhance its cultural value, assess and improve its energy efficiency. In fact, according to New4old European project [5], historic buildings have been gleaned through a long-time experience of trials and errors, which has encouraged the selection of effective passive constructive methods to provide a comfortable state both for living and general use, thus contributing to good energy performance for different climates. To enable the process of eco-efficient renovation of existing buildings all operators in the market must be involved, starting from public authorities, to construction companies and designers. Something has to change not only in the perspectives of design and construction, 1 For public buildings, the Directive establishes the obligation to upgrade central government buildings and to ensure the improvement of buildings under major renovation in order to meet minimum energy standards. In particular, it specifies that each Member State, from January 1, 2014, must ensure that 3% of the total useful floor area of the conditioned buildings public property of their central government (and its employees) is upgraded every year.
2011
The project Sustainable Renovation examines the challenge of the current and future architectural renovation of Danish suburbs which were designed in the period from 1945 to 1973. The research project takes its starting point in the perspectives of energy optimization and the fact that the building process over the period changed from craftsmanship to industrialized production of housing. The aim is to present the context in which energy transformation has to be seen as an architectural question. The research field focuses on social housing blocks and expands the discussion of architecture from architectural heritage to energy efficiency and from architectural quality to sustainability. The first, second and third renovations are discussed from financial and sustainable view points. The role of housing related to the public energy supply system and the relation between the levels of renovation of the architectural heritage are examined as possible ideas for seeing the renovation fie...
Energy savings and carbon reduction due to renovated buildings
International Review of Mechanical Engineering
The paper deals with an energy saving case study of a renovated building in comparison with the building energy balance before renovation. The renovation was carried out in the building envelopes such as external walls, floor on ground and the flat roof for the improvement of thermal insulation properties of the investigated building. The renovation has brought forward energy saving effects, which are important for both reducing energy consumption for heating during winter seasons and the associated heating costs. In addition, the renovation represents a positive environmental impact due to the reduction of carbon dioxide emissions from such dwellings. The energy renovation of the case study building evaluated was used as a base for an estimation of energy savings and reductions of carbon emissions within a housing estate residential complex with twenty similar buildings. The study presents the importance of having such thermally insulated building envelopes in building together with windows that also have good thermal property and insulation quality for the reduction of overall energy consumption.