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15 results on '"Alexandri, Eleftheria"'

1. Teaching Assembly for Disassembly; An Under-Graduate Module Experience

Author

Alexandri, Eleftheria

Abstract

This paper is about the experience of teaching Assembly for Disassembly to fourth year architect students within the module of sustainable design. When designing a sustainable building one should take into consideration the fact that the building is going to be demolished in some years; thus the materials should be assembled in such a way so that the building is not just demolished, but disassembled in a practical way, so that its items and materials can be reused or at least be recycled in other buildings or products or be decomposed. Yet, the structure should be safe during its lifetime. With this technology, the building's sustainability spans also to its "grave". In this paper the methodology for teaching students how to design for the disassembly of buildings is presented. Apart from the respective lectures, the fourth year students have been asked to design a small home for a homeless person, following, apart from bioclimatic design and the zero-CO[subscript 2] building design, an "assembly for disassembly" design. They have also been encouraged to use, apart from conventional building materials, materials that could be collected from municipal waste, provided they have a small environmental footprint. Frequent tutorials are made during this project. Different groups of students have followed different concepts in their design; some students have focused on the assembly for disassembly of a home from municipal waste, others from construction materials, while others, apart from assembly for disassembly, have also taken into consideration the movability of their design as well as its incorporation in the urban tissue. The results and the conclusions are presented in this paper. [For the full proceedings see ED557181.]

Published
2014

3. Investigations into mitigating the heat island effect through green roofs and green walls

Author

Alexandri, Eleftheria

Subjects
690
Abstract

This thesis investigates the thermal effect of green roofs and green walls on the built environment and investigates whether they could be used in existing cities so as mitigate the heat island effect. In order to estimate this for various climates, a prognostic, micro-scale, two-dimensional heat and mass transfer model has been developed. In the first chapter the aim, objectives and methodology of the research are established. In the second chapter a literature review of the causes and the consequences of the heat island effect is made, as well as a critique on the use of urban parks for mitigating raised urban temperatures. In the third chapter, a research is carried out where, when and why roofs and walls were covered with vegetation. In the fourth chapter the development of the one-dimensional model is presented, for heat and mass transfer in building materials, a soils, plants and the air. The model is validated with an experiment conducted at a concrete and a vegetated test cell. A comparison is made between green roofs and conventional concrete ones, as well as with white coated roofs for different climates. In the fifth chapter the one-dimensional model is developed into a two-dimensional one and the microclimatic heat and mass transfer model of a typical urban canyon is established. In the sixth chapter, the model is used to investigate the effect of green roofs and green walls for various climates, geometries, canyon orientations and wind directions. From this parametric analysis, an investigation is done on how the raised urban temperatures could lower when the building envelope is covered with vegetation, which could lead to energy savings for cooling and more comfortable outdoor conditions. In the last chapter, conclusions are drawn from the results of this thesis and further research is proposed.

Published
2006

10. Multicriteria evaluation of ecolabels for the energy upgrade of dwellings in Greece.

Author

Alexandri, Eleftheria and Androutsopoulos, Andreas

Subjects
*CLIMATIC zones, *UTILITY theory, *DWELLINGS, *COMMERCIAL buildings, *BUILDING envelopes, *OFFICE buildings
Abstract

The aim of this paper is to explore the contribution of ecolabel HVAC systems, which are already available in the market, to the energy upgrade of existing dwellings, placing emphasis on whether they can constitute an efficient means of dealing with energy poverty. For this reason, the effects of these systems, when placed on an existing detached dwelling, are considered not only in relationship to energy savings, but also with other energy, environmental, social and economic criteria. Comparison is made between scenarios of the energy upgrade with various ecolabel HVAC systems, as well as scenarios of the energy upgrade of the building envelope. A parametric analysis is carried out, regarding the aforementioned criteria in the four climatic zones of Greece and three building typologies. Scenarios are prioritised, using the Multi-Attribute Utility Theory. Based on this analysis, conclusions are drawn, concerning the most advantageous energy saving actions, from an energy, environmental, social and economic point of view, for each building type and climatic zone. It is found that certain synergies of ecolabel HVAC systems with RES systems can be effective energy saving solutions, capable to face energy poverty. [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
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12. Investigations into mitigating the heat island effect through green roofs and green walls

Author

Alexandri, Eleftheria

Subjects
NA
Abstract

This thesis investigates the thermal effect of green roofs and green walls on the built environment and investigates whether they could be used in existing cities so as mitigate the heat island effect. In order to estimate this for various climates, a prognostic, micro-scale, two-dimensional heat and mass transfer model has been developed. In the first chapter the aim, objectives and methodology of the research are established. In the second chapter a literature review of the causes and the consequences of the heat island effect is made, as well as a critique on the use of urban parks for mitigating raised urban temperatures. In the third chapter, a research is carried out where, when and why roofs and walls were covered with vegetation. In the fourth chapter the development of the one-dimensional model is presented, for heat and mass transfer in building materials, a soils, plants and the air. The model is validated with an experiment conducted at a concrete and a vegetated test cell. A comparison is made between green roofs and conventional concrete ones, as well as with white coated roofs for different climates. In the fifth chapter the one-dimensional model is developed into a two-dimensional one and the microclimatic heat and mass transfer model of a typical urban canyon is established. In the sixth chapter, the model is used to investigate the effect of green roofs and green walls for various climates, geometries, canyon orientations and wind directions. From this parametric analysis, an investigation is done on how the raised urban temperatures could lower when the building envelope is covered with vegetation, which could lead to energy savings for cooling and more comfortable outdoor conditions. In the last chapter, conclusions are drawn from the results of this thesis and further research is proposed.

13. Investigations into mitigating the heat island effect through green roofs and green walls

Author

Alexandri, Eleftheria and Alexandri, Eleftheria

Abstract

This thesis investigates the thermal effect of green roofs and green walls on the built environment and investigates whether they could be used in existing cities so as mitigate the heat island effect. In order to estimate this for various climates, a prognostic, micro-scale, two-dimensional heat and mass transfer model has been developed. In the first chapter the aim, objectives and methodology of the research are established. In the second chapter a literature review of the causes and the consequences of the heat island effect is made, as well as a critique on the use of urban parks for mitigating raised urban temperatures. In the third chapter, a research is carried out where, when and why roofs and walls were covered with vegetation. In the fourth chapter the development of the one-dimensional model is presented, for heat and mass transfer in building materials, a soils, plants and the air. The model is validated with an experiment conducted at a concrete and a vegetated test cell. A comparison is made between green roofs and conventional concrete ones, as well as with white coated roofs for different climates. In the fifth chapter the one-dimensional model is developed into a two-dimensional one and the microclimatic heat and mass transfer model of a typical urban canyon is established. In the sixth chapter, the model is used to investigate the effect of green roofs and green walls for various climates, geometries, canyon orientations and wind directions. From this parametric analysis, an investigation is done on how the raised urban temperatures could lower when the building envelope is covered with vegetation, which could lead to energy savings for cooling and more comfortable outdoor conditions. In the last chapter, conclusions are drawn from the results of this thesis and further research is proposed.

14. Investigations into mitigating the heat island effect through green roofs and green walls

Author

Alexandri, Eleftheria and Alexandri, Eleftheria

Abstract

This thesis investigates the thermal effect of green roofs and green walls on the built environment and investigates whether they could be used in existing cities so as mitigate the heat island effect. In order to estimate this for various climates, a prognostic, micro-scale, two-dimensional heat and mass transfer model has been developed. In the first chapter the aim, objectives and methodology of the research are established. In the second chapter a literature review of the causes and the consequences of the heat island effect is made, as well as a critique on the use of urban parks for mitigating raised urban temperatures. In the third chapter, a research is carried out where, when and why roofs and walls were covered with vegetation. In the fourth chapter the development of the one-dimensional model is presented, for heat and mass transfer in building materials, a soils, plants and the air. The model is validated with an experiment conducted at a concrete and a vegetated test cell. A comparison is made between green roofs and conventional concrete ones, as well as with white coated roofs for different climates. In the fifth chapter the one-dimensional model is developed into a two-dimensional one and the microclimatic heat and mass transfer model of a typical urban canyon is established. In the sixth chapter, the model is used to investigate the effect of green roofs and green walls for various climates, geometries, canyon orientations and wind directions. From this parametric analysis, an investigation is done on how the raised urban temperatures could lower when the building envelope is covered with vegetation, which could lead to energy savings for cooling and more comfortable outdoor conditions. In the last chapter, conclusions are drawn from the results of this thesis and further research is proposed.

15. GETTING DRESSED.

Author

WEEKS, AMY and ALEXANDRI, ELEFTHERIA

Subjects
WEDDING gowns, VEILS, SILK, SATIN, TEXTILES, WEDDING costume
Abstract

The article offers tips to women on how to select a wedding dress. It states that a wedding dress should have a veil on top, and suggests how to find the length of a veil that is suitable for a woman. It mentions that a wedding dress can be made up of fabrics such as satin, silk, or organza. It also suggests that when going to a bridal boutique for shopping, a woman should make an appointment, and discuss the budget with the salesperson.

Published
2013

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