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2 results on '"volumetric addition"'

1. Possibilities of energy improvement of the existing multi-family buildings from the period of post-war mass construction using volumetric additions

Author

Lević, Bojana, Lević, Bojana, Ignjatović, Dušan, Lević, Bojana, Lević, Bojana, and Ignjatović, Dušan

Abstract

The refurbishment of existing buildings with the aim of spatial-material improvement combined with the reduction of energy consumption is a very contemporary topic in recent years. The interest, both of experts and the general population, in saving energy while minimizing operating costs is constantly increasing, and it is emphasized by the uncertainties of energy supply coupled with constant increase in prices. Residential buildings built in the period from 1946 to 1970 make up one quarter of the total multifamily stock in Serbia. Most of these buildings are characterized by high energy consumption for heating due to poor thermal performance of the building envelope. Created according to the design regulations valid at that time, valued by today's user requirements, they have major spatial and organizational deficiencies, notably small apartments, outdated and inflexible spatial organization and small windows on the facades. The absence of elevators in many multi-family buildings from that period also reduces their comfort of use. The subject of the research is based on application of deep refurbishment methodology by adding volumes, as a constructive-functional element, to existing multi-family buildings. Primary goal represents achieving high energy efficiency levels combined with bettering of spatial and living standards through remodeling and modernization of residential units, and improving vertical building communications. The paper will illustrate the application of the principle of volumetric addition on three typologically different multi-family residential buildings. Based on the National Typology of Residential Buildings of Serbia, the subject of research are most common building typologies: free-standing buildings, row buildings within a city block and “lamellas”. The research will analyze energy performance of the existing state on representative buildings of each type, as well as performance of improved state through application of strategy of deep re

Published
2023

2. New strategies towards nearly zero energy in existing buildings: the ABRACADABRA project

Author

Anastasia Fotopolulou, Elena Cattani, Giovanni Semprini, Annarita Ferrante, Semprini, Giovanni, Ferrante, Annarita, Cattani, Elena, and Fotopoulou, Anastasia

Subjects
020209 energy, Real estate, Context (language use), existing building, 02 engineering and technology, volumetric addition, 010501 environmental sciences, 01 natural sciences, 7. Clean energy, 12. Responsible consumption, 11. Sustainability, 0202 electrical engineering, electronic engineering, information engineering, Economic impact analysis, Built environment, energy efficiency, 0105 earth and related environmental sciences, Rate of return, deep renovation, Environmental economics, Investment (macroeconomics), Energy (all), ICAR/10 Architettura tecnica, cost-effective solution, 13. Climate action, Facade, Business, Efficient energy use, existing buildings, volumetric additions, cost-effective solutions
Abstract

ABRACADABRA is an European Project funded by the Horizon 2020 Program, based on the assumption that substantial increase in the real estate value of the existing buildings can play a key role in the deep renovation. The project aims at demonstrating to the key stakeholders and financial investors the attractiveness of a new renovation strategy based on volumetric Abstract Add-ons and Renewable energy sources (AdoRES) intended as one (or a set of) Assistant Building unit(s) – like aside or facade additions, rooftop extensions or even an entire new building construction – that “adopt” the existing buildings (the Assisted District heating networks are commonly addressed in the literature as one of the most effective solutions for decreasing the Buildings) to achieve nearly zero energy. The creation of these AdoRES aims at reducing the initial investment allocated for the greenhouse gas emissions from the building sector. These systems require high investments which are returned through the heat deep renovation of the existing building creating an up-grading synergy between old and new. The ABRA strategy can thus result sales. Due to the changed climate conditions and building renovation policies, heat demand in the future could decrease, in the implementation of a punctual densification policy that aims at fostering the investments in deep renovation of the existing prolonging the investment return period. built environment, driving process innovation in the construction and the real estate sector. The main scope of this paper is to assess the feasibility of using the heat demand – outdoor temperature function for heat demand The paper, after outlining the main aspect of the project, focuses on a case study in Italian context, where different technological forecast. The district of Alvalade, located in Lisbon (Portugal), was used as a case study. The district is consisted of 665 solutions and related economic impact are analysed: from a deep renovation to AdoRES strategies and different scenarios of buildings that vary in both construction period and typology. Three weather scenarios (low, medium, high) and three district renovation. The preliminary feasibility study and cost assessment, show the benefit given by the presented strategy in renovation scenarios were developed (shallow, intermediate, deep). To estimate the error, obtained heat demand values were overcoming actual financial e technical barriers.

Published
2017

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