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Constantinos Vassiliades
Department of Architecture, University of Cyprus, Nicosia, Cyprus

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Short communication
Published: 18 May 2021 in Energy Reports
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The European regulatory shift towards energy-efficient buildings and nearly zero energy buildings (NZEB) leads architects and engineers to the need for investigation of new innovative design methodologies. The reduction of the energy demand for cooling, heating and artificial lighting is now mandatory for new buildings and for large renovations of existing buildings, in order to comply with these new regulations. This is a challenge since the majority of the current building stock is consisted by over than 25-year-old existing buildings, which are inefficient in terms of energy needs. The aim of this study is to completely renovate an existing building in the centre of Nicosia, Cyprus, by applying a novel double façade system. This is consisted by a combination of a novel Building Integrated Photovoltaic/Thermal system (BIPV/T) and a Corridor Type Double façade system, which acts autonomously in every floor. The proposed research starts with an analysis of building and site geometry and moves through a literature review, along with the presentation of case studies where active solar energy systems are integrated on double building facades. Digital energy simulations are performed where the proposed double façade’s passive contribution is investigated. At the same time, these simulations aim to analyse whether the system can cover the energy needs of the aforementioned building. The investigation focuses into calculating the façade’s electricity production potential, whilst its passive contribution is recorded through the reduction potential of the building’s energy needs for heating, cooling and artificial lighting. Through a 3D simulations modelling, the existing energy needs are recorded and then compared to the calculated needs of the renovated building. The ultimate aim of this research is to determine whether the use of BIPV/T double façade solutions for the refurbishment of existing buildings consist an environmental viable solution.

ACS Style

Constantina Theokli; Christina Elia; Markos Markou; Constantinos Vassiliades. Energy renovation of an existing building in Nicosia Cyprus and investigation of the passive contribution of a BIPV/T double façade system: A case-study. Energy Reports 2021, 1 .

AMA Style

Constantina Theokli, Christina Elia, Markos Markou, Constantinos Vassiliades. Energy renovation of an existing building in Nicosia Cyprus and investigation of the passive contribution of a BIPV/T double façade system: A case-study. Energy Reports. 2021; ():1.

Chicago/Turabian Style

Constantina Theokli; Christina Elia; Markos Markou; Constantinos Vassiliades. 2021. "Energy renovation of an existing building in Nicosia Cyprus and investigation of the passive contribution of a BIPV/T double façade system: A case-study." Energy Reports , no. : 1.

Journal article
Published: 04 May 2020 in Procedia Manufacturing
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This paper aims to examine the integration of environmental systems and strategies in environmentally friendly and technologically advanced, off–grid prefabricated housing units. The study is based on a comprehensive precedent and literature review of current and proposed applications of prefabricated assembly methods and their inherent potential, in terms of both design and construction, to incorporate the integration of the systems mentioned above. A fundamental classification and taxonomy of the current state of the field was performed, based on three key design aspects pertaining to the issue of environmental design: Energy efficient structures, bioclimatic design and ecological approach to design. All cases are addressed in terms of the challenges faced in optimizing the overall design performance so that it leads to an affordable and spatially flexible and site adaptable construction and also in minimizing the units’ lifecycle operational costs with an emphasis on energy consumption. Based on the above taxonomy and optimization techniques, the research team is working on a new, off-grid prefabricated residential model, the “Prefab Eco Smart House”, aiming to blend prefabrication technology, bioclimatic design, integration of renewable energy sources, innovation in architectural design, comfort and technological excellence. The ultimate aim of this effort is to critically present the range of typologies and their various alternatives, which can be applied on a “green” prefabricated building unit in Cyprus, in ways which optimize its design and energy potential.

ACS Style

Aimilios Michael; Andreas Savvides; Constantinos Vassiliades; Elina Triantafyllidou. Design and Creation of an Energy Efficient Prefabricated Housing Unit based on Specific Taxonomy and Optimization Techniques. Procedia Manufacturing 2020, 44, 261 -268.

AMA Style

Aimilios Michael, Andreas Savvides, Constantinos Vassiliades, Elina Triantafyllidou. Design and Creation of an Energy Efficient Prefabricated Housing Unit based on Specific Taxonomy and Optimization Techniques. Procedia Manufacturing. 2020; 44 ():261-268.

Chicago/Turabian Style

Aimilios Michael; Andreas Savvides; Constantinos Vassiliades; Elina Triantafyllidou. 2020. "Design and Creation of an Energy Efficient Prefabricated Housing Unit based on Specific Taxonomy and Optimization Techniques." Procedia Manufacturing 44, no. : 261-268.

Journal article
Published: 17 June 2019 in Applied Sciences
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This paper aims to simplify the interdisciplinary design process that will be used as a design tool for the viable integration of active solar energy systems into buildings, i.e., Building-Integrated Solar Thermal Systems—BISTSs; Building-Integrated Photovoltaic Systems—BIPVSs, through the creation of a roadmap. The research also aims supplement the work of researchers who have dealt with the creation of design tools that aim to optimise a specific aspect of a building design, or their geometric forms, in order to shape energy-efficient and sustainable architectural solutions. More specifically, a prescriptive design strategy is derived from the proposed design tool. This is based on five design steps, each of which is analysed and which lead to the creation of a comprehensive design tool for siting buildings so as to optimise the integration of solar systems. The originality of this tool is based on the fact that it makes an important step in the standardisation of these studies.

ACS Style

Constantinos Vassiliades; Soteris Kalogirou; Aimilios Michael; Andreas Savvides. A Roadmap for the Integration of Active Solar Systems into Buildings. Applied Sciences 2019, 9, 2462 .

AMA Style

Constantinos Vassiliades, Soteris Kalogirou, Aimilios Michael, Andreas Savvides. A Roadmap for the Integration of Active Solar Systems into Buildings. Applied Sciences. 2019; 9 (12):2462.

Chicago/Turabian Style

Constantinos Vassiliades; Soteris Kalogirou; Aimilios Michael; Andreas Savvides. 2019. "A Roadmap for the Integration of Active Solar Systems into Buildings." Applied Sciences 9, no. 12: 2462.

Journal article
Published: 05 December 2018 in Renewable Energy
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This paper aims to determine the optimum geometry of the building blocks in order to ensure the viable building integration of active solar energy systems in the urban fabric. Through literature review, similar research objectives are reported and analysed, whilst the building integration of active solar systems in urban areas is explored. The motivation for the proposed research emanates for a need for an analysis at the scale of urban blocks and of building massing configurations at the scale of a cluster of buildings rather than that of an individual building. These sets of physical characteristics are examined to arrive at simplified archetypes, while at the same time the habitation density is held constant. A set of twelve simplified building block configurations is created, whereby the geometrical parameters examined include the width of the streets separating the building blocks, the height of existing and proposed buildings and the massing configurations of the buildings that can be accommodated in the proposed building blocks. These parameters are manipulated to effect changes in collective building massing and siting decisions that result in the optimal integration of active solar energy systems that may be integrated on a building cluster’s facades and roofs. Subsequently, the energy production potential of the buildings’ integrated systems was calculated for each case so that the twelve simplified massing and siting configurations could be compared and contrasted, so as provide architectural designers as well as planning authorities a way of quantifying solar planning decisions at the neighbourhood scale.

ACS Style

Andreas Savvides; Constantinos Vassiliades; Aimilios Michael; Soteris Kalogirou. Siting and building-massing considerations for the urban integration of active solar energy systems. Renewable Energy 2018, 135, 963 -974.

AMA Style

Andreas Savvides, Constantinos Vassiliades, Aimilios Michael, Soteris Kalogirou. Siting and building-massing considerations for the urban integration of active solar energy systems. Renewable Energy. 2018; 135 ():963-974.

Chicago/Turabian Style

Andreas Savvides; Constantinos Vassiliades; Aimilios Michael; Soteris Kalogirou. 2018. "Siting and building-massing considerations for the urban integration of active solar energy systems." Renewable Energy 135, no. : 963-974.

Journal article
Published: 21 August 2018 in Energy
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This study aims at making an environmental assessment of the integration of active solar energy systems on building envelopes in southern Europe. More specifically, it focuses on energy production of active solar systems, as well as on the investigation of shading and insolation of indoor spaces in relation to the energy requirements and the visual comfort of inhabitants. For the needs of the present research, five active solar systems and three representative space typologies were selected for in-depth investigation. Autodesk Ecotect Analysis software v.5.2, Desktop Radiance v2.0 Beta and Clean Energy Project Analysis Software Retscreen4 were used for the simulations. The simulation results are presented and discussed comparatively. The findings indicate that the integration of active solar systems contributes to the reduction of the cooling and heating loads. In terms of natural lighting, the integration of active solar systems enables high levels of natural lighting while it minimizes glare issues for the majority of systems. The research highlights the role of building integrated active solar systems, both in the indoor built environment and in energy performance, introducing a comprehensive environmental approach. Moreover, it highlights the importance of an integrated architectural design approach in the built environment.

ACS Style

Constantinos Vassiliades; Aimilios Michael; Andreas Savvides; Soteris Kalogirou. Improvement of passive behaviour of existing buildings through the integration of active solar energy systems. Energy 2018, 163, 1178 -1192.

AMA Style

Constantinos Vassiliades, Aimilios Michael, Andreas Savvides, Soteris Kalogirou. Improvement of passive behaviour of existing buildings through the integration of active solar energy systems. Energy. 2018; 163 ():1178-1192.

Chicago/Turabian Style

Constantinos Vassiliades; Aimilios Michael; Andreas Savvides; Soteris Kalogirou. 2018. "Improvement of passive behaviour of existing buildings through the integration of active solar energy systems." Energy 163, no. : 1178-1192.

Conference paper
Published: 06 July 2017 in Hydrogen and Fuel Cells
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ACS Style

Constantinos Vassiliades; Aimilios Michael; Andreas Savvides; Soteris Kalogirou. Environmental Assessment of the Integration of Active Solar Energy Systems on Building Envelopes in Southern Europe. Hydrogen and Fuel Cells 2017, 179 -190.

AMA Style

Constantinos Vassiliades, Aimilios Michael, Andreas Savvides, Soteris Kalogirou. Environmental Assessment of the Integration of Active Solar Energy Systems on Building Envelopes in Southern Europe. Hydrogen and Fuel Cells. 2017; ():179-190.

Chicago/Turabian Style

Constantinos Vassiliades; Aimilios Michael; Andreas Savvides; Soteris Kalogirou. 2017. "Environmental Assessment of the Integration of Active Solar Energy Systems on Building Envelopes in Southern Europe." Hydrogen and Fuel Cells , no. : 179-190.