Theodoros Theodosiou

Theodoros Theodosiou
Aristotle University of Thessaloniki | AUTH · School of Civil Engineering

Associate Professor

About

100
Publications
110,912
Reads
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2,305
Citations
Additional affiliations
September 2020 - present
Hellenic Open University
Position
  • Professor
March 2018 - present
Aristotle University of Thessaloniki
Position
  • Professor (Associate)
January 2016 - December 2019
International Hellenic University
Position
  • Professor
Education
October 1996 - June 2000
Aristotle University of Thessaloniki
Field of study
  • Passive cooling of buildings - Green roofs

Publications

Publications (100)
Article
This literature review addresses the Life Cycle Energy Analysis (LCEA) of residential buildings. As the fluctuation in the choice of functional units, boundaries of the system, life cycle inventory (LCI) methods, metrics and impact indicators complicated the potential comparability, the guidelines of Product Category Rule (PCR) 2014:02 for building...
Article
Development and use of preconstruction have been exhibited for several decades. Numerous modules, ranging from the simplest to the most advanced concepts, have been suggested to ameliorate the layout of building structures, with respect to a broad spectrum of needs. This study aims to unfold the fire defensiveness of an innovative precast concrete...
Article
Full-text available
Although modern prefabricated buildings may offer many advantages, such as a significant reduction in cost and time, improved quality and accuracy in manufacture, easy dismantle and reuse of its components, etc., they have not gained the attention they deserve in the construction market yet. In this paper, a holistic approach for the formation of p...
Article
The energy consumption mitigation of the building sector, one of the most energy-consuming, is a major target of the European policy. Recent studies indicate that increased thermal protection may burden the energy performance of a building in warm and hot regions by increasing the overheating risk during the warm season. In this study, a building i...
Article
Full-text available
Improving the energy efficiency of residential buildings is of outmost importance for reducing their environmental footprint. Recent studies demonstrate that a highly insulated building envelope may burden the building’s performance during the cooling period, especially in regions with hot summers. In this study, the energy performance of a residen...
Article
Full-text available
Green roof installation is considered to be an effective practice in restoring green spaces to high – density urban areas, in an effort to mitigate environmental problems that arise from their growing expansion. The present study attempts to further investigate this claim by assessing the environmental and economic life cycle benefits and challenge...
Article
Green roofs constitute a prominent urban green infrastructure solution and are considered to be able to enhance urban sustainability and resilience. Existing literature, however, lacks a holistic evaluation of their life cycle impacts. In this study, a comparative environmental and economic life cycle analysis between green and flat roofs under Med...
Article
Full-text available
The paper concerns the development of an innovative building module with advanced thermophysical and mechanical properties that will be used in constructing sustainable prefabricated buildings with high structural, hygrothermal, energy, acoustic, fire and environmental performance at the minimum possible time and cost. In this paper, the configurat...
Conference Paper
This work aims to analyse the thermal performance of a clay hollow‐brick masonry wall under a fire action referring to the standard time‐temperature curve (EN1991‐1‐2). For this fire exposure, temperature profile calculations underline the thermal response of certain wall configurations, while resulted temperatures of the non‐exposed surface can...
Article
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Heading towards more energy-efficient buildings, legislative requirements are becoming increasingly demanding. A decade ago, the thermal bridge effect was a known deficiency of building facades but, beyond design guidelines, no qualitative or quantitative requirements occurred in order to minimize its impact. The implementation of international sta...
Article
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Despite the multiple advantages of prefabricated compared to conventional buildings, such as significant reductions in cost and time, improved quality and accuracy in manufacture, easy dismantling and reuse of components, reduction in environmental degradation, increase of productivity gains, etc., they still share a small part of the European buil...
Article
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Tall buildings around the world are increasing at an accelerating pace. However, this fast-pace development is not in tandem with today’s environmental considerations towards reducing high carbon emissions, mainly relating to the building sector (close to 50% of carbon dioxide (CO2) emissions). The vast scale and energy demands of tall buildings ca...
Chapter
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This paper investigates different strategies towards advancing the energy efficiency of a high-rise office building by focusing on the building envelope. More specifically, the focus is on the thermal properties of the building envelope and the effect of altitude on energy performance. The studies are focused on Tel Aviv, Israel, a city with a vibr...
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The increased rates of urbanization and industrialization of the 20th and 21st centuries have dramatically changed the land use and cover of modern cities, contributing to the degradation of the urban microclimate and the rise of the ambient urban air temperatures. Given the multiple negative energy, environmental and social consequences of urban w...
Article
Towards the zero energy and emission future, near Zero Energy Buildings (nZEBs) lead the path for the building construction sector. European legislation provides normative provisions for the definition of nZEBs and their cost-optimal levels within the context of EPBD recast and Delegated Regulation No.244 (2012). However, that same framework unilat...
Article
Full-text available
This study evaluates the effect of the morphological characteristics of 4 urban districts in Thessaloniki, Greece on the vertical profile of the Tair inside the various urban canyons under different meteorological conditions. ENVI-met v.4 microclimate simulations are conducted for the 4 selected case study areas, while different meteorological boun...
Article
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This paper presents the primary findings of a research project, aiming to introduce an innovative building module with improved thermophysical and mechanical properties that will serve as a bearing element and/or as an internal partition wall in prefabricated residential buildings. This new building module will comply with current requirements as r...
Article
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The aim of this paper is to investigate the energy performance of residential buildings, through a case study of a typical domestic house located in Thessaloniki, Northern Greece. The building’s energy performance is simulated and analysed using the DesignBuilder software. The study then performs a parametric analysis, in which deviation in various...
Conference Paper
Full-text available
The Greek EPB regulation was recently reformed. During this procedure a scientific workgroup produced a series of Technical Guidelines for energy efficiency interventions in the existing building fabric constructed before 1955 (year of the 1 st building code), in order to be implemented in the new legislation. These old buildings differ in architec...
Article
The numbers of high-rise buildings around the world increase rapidly. However, this fast pace is not in tandem with the expertise gained on how to design this building typology to best adjust it to local climates. In addition, the increased transparency of the building envelope from the mid-twentieth century onwards, resulted in high-energy loads,...
Article
Full-text available
The numbers of high-rise buildings around the world increase rapidly. However, this fast pace is not in tandem with the expertise gained on how to design this building typology to best adjust it to local climates. In addition, the increased transparency of the building envelope from the mid-twentieth century onwards, resulted in high- energy loads,...
Article
Full-text available
Replacing conventional pavements with the corresponding high albedo ones constitutes a well-known technique to improve outdoor thermal environment of modern cites. Since most of the existing studies assess the impact of the high albedo pavements at the pedestrian’s height and with respect to thermal comfort, this study aims to examine the effect of...
Article
Double-skin facades (DSFs) are a technology that lies behind innovative energy efficient facade systems. While it provides a potential for high energy efficient buildings, other important parameters, like point thermal bridge problems, are in most cases overlooked. The aim of this study is to investigate the magnitude of this approach and the effec...
Article
Increased urban air temperatures due to urbanization affect the buildings’ energy performance and the outdoor thermal comfort. Aiming on the establishment of adaption strategies, urban microclimate studies using numerical simulation tools are gaining great scientific attention. The ENVI-met model is one of the most widely employed dynamic simulatio...
Conference Paper
Within the existing European building stock, a large share is built before 1960, when there were only a few or no requirements for energy efficiency. Given that only a small portion of these buildings have undergone major energy retrofits, it is easily concluded that the oldest part of the building stock contributes greatly to the high energy consu...
Article
Aiming at the improvement of a dense urban area's microclimatic conditions, this study examines by simulation means, the application of highly reflective materials as a mitigation strategy. However, as significant albedo changes may occur due to weathering and aging, the study investigates the surface (Tsurf) and air (Tair) temperature cooling pote...
Conference Paper
On the way to achieve the demanding energy efficiency targets that adopt and even surpass the requirements of near Zero Energy Buildings, numerous techniques and systems have been proposed and constructed, aiming not only at improving the thermophysical characteristics of the building envelope, but even convert it to a smart, adaptive or energetic,...
Article
Predicting buildings' heating and cooling needs through dynamic simulation methods requires the input of hourly weather data, so as to represent the typical meteorological characteristics of a specific location. Hence, the so called 'typical weather years' (TWY), mainly deduced from multi-year records of meteorological stations outside the urban ce...
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This paper investigates the public and professional attitudes towards an innovative energy efficient façade refurbishment system, in Mediterranean countries, including Greece, Italy and Spain. Two types of multiple choice questionnaires were developed and addressed to two different target groups: building professionals and users. The survey questio...
Article
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Electricity generation on site is a design challenge aiming at supporting the concept of energy-autonomous building. Many projects worldwide have promoted the installation of photovoltaic panels on urban buildings, aiming at utilizing a large area to produce electricity. In most cases, photovoltaics are considered strictly as electricity generators...
Article
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With world population becoming progressively urbanized, approximately 55% to date, the typology of the skyscraper is promoted as potentially socially and economically successful solution. However, an important challenge set on a worldwide basis is how to reduce their high-energy demands, environmental and social imbalances to meet growing strict re...
Article
Full-text available
Towards the EPBD recast 2010/31/EU and the nearly zero energy building (nZEB), this review addresses the whole life cycle energy analysis of residential buildings. Life Cycle Energy Analysis (LCEA) of 90 case studies of residential buildings is evaluated with a specific focus on the normalization procedure that follows the principles of Product Cat...
Article
Full-text available
The assessment of a building's energy performance as a design factor in the early design stages is a very demanding and complex procedure. Over the last decades, a number of tools and methods have been developed to address performance-related design questions, mostly using Multi-Objective Optimization Algorithms. Parametric modelling offers dynamic...
Article
Full-text available
Resent developments on the requirements regarding the thermal efficiency of buildings and building envelopes, have increased the need for energy retrofit of building envelopes. Cladding systems and ventilated facades are among the most attractive solutions to these problems due to a variety of reasons, including aesthetics, moisture control, servic...
Article
Full-text available
In order to effectively design nearly Zero Energy Buildings, the assessment of energy performance in the early design stages through simulation is an important, although very demanding and complex, procedure. Over the last decades, various tools and methods have been developed to address performance-related design questions, mostly using Multi-Obje...
Article
Towards zero emission and zero energy buildings, literature reviews highlight the importance of embodied energy and embodied carbon emissions. The current review analyses 95 case studies of residential buildings, as an effort to identify the range of embodied carbon emissions and the correlation between the share of embodied energy and carbon for d...
Article
The building sector is responsible for more than 40% of the EU’s total energy consumption. To reduce the energy consumption in buildings and to achieve the EU’s fossil fuel saving targets for 2020 and beyond 2050, the energy efficient retrofitting strategies are critically important and need to be implemented effectively. This paper presents a dyna...
Article
Full-text available
In this study, three different Typical Weather Years (TWYs) generated in Meteonorm using different techniques are compared with each other and with an actual hourly climate dataset of a calendar year. The impact of different hourly weather files on building's annual energy needs is then assessed via dynamic simulations of a typical building. The an...
Article
The present study investigates the impact of different intervention scenarios regarding morphological characteristics of an urban district of Thessaloniki on microclimatic parameters such as surface, air and mean radiant temperature distribution during a typical summer day. The proposed intervention scenarios include the total replacement of concre...
Article
Full-text available
As of 2007 more than half of the world’s population is living in urban areas (a figure expected to rise to 60% by 2030). Thus, the liveability of the high-density city is gradually becoming a central point of focus and concern. A successful skyscraper model of urban planning could provide the possibility to increase city-space vertically as opposed...
Article
Full-text available
Considering the nearly zero energy building (nZEB) and the increased measures for the improvement of the energy efficiency, the international literature indicates an extended use of specialized materials and technical installations. An increase in the embodied energy follows that use, with a final share between 74% and 100% in the total life cycle...
Article
Full-text available
During the last decades, standards on building construction have risen sharply to integrate new, ambitious demands regarding energy efficiency, as well as thermal and optical comfort in the design procedure. Building simulation software assists in the accurate calculation of a hypothetical or existing building's performance on several aspects; but...
Article
Almost four years after the implementation deadline of the energy performance of buildings Directive recast (2010/31/EU) and after being referred to the Court of Justice of the EU by the European Commission, Greece has not yet proceeded with the necessary calculations and legislative measures on the minimum, cost-optimal energy performance requirem...
Article
Full-text available
In an urban environment, green roofs represent a sustainable solution for mitigating stormwater volumes and hydrograph peaks. So far, many literature studies have investigated the hydraulic efficiency and the subsurface runoff coefficient of green roofs, showing their strong variability according to several factors, including the characteristics of...
Article
Cladding systems have become an attractive solution in energy renovation of existing buildings since they combine multiple benefits. In such systems, the use of a metallic frame and brackets, which penetrates the thermal insulation layer, creates point thermal bridges that are usually neglected by thermal insulation regulations due to their calcula...
Article
The paper focuses on the assessment of the windows’ contribution to the energy performance of buildings in the warmer regions of Europe. This is derived by calculating the cooling energy index qc and the area weighted energy needs for different window configurations installed on a reference room for two different building uses, office and residenti...