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Nicosia, Cyprus

Panayiotou G.P.,Cyprus University of Technology | Kalogirou S.A.,Cyprus University of Technology | Florides G.A.,Cyprus University of Technology | Maxoulis C.N.,Cyprus Scientific and Technical Chamber | And 6 more authors.
Energy and Buildings | Year: 2010

The significance of the residential building sector in terms of energy consumption is well acknowledged. In this view the knowledge of the way the residential building stock of Cyprus behaves in terms of energy consumption is quite valuable since it will assist policy makers to formulate targeted measures aiming the improvement of energy efficiency and setting current legal standards and benchmarks in the energy performance certificate, a requirement of the 2002/91/EC Directive. Unfortunately, the existing knowledge on this subject is quite poor. As a remedy a research project supported by a national research grant is in operation since December 2008. This paper presents the outline, goals and methodology of this research project and the findings regarding the energy behaviour and other characteristics of the residential building stock of Cyprus. From the analysis of the results for 500 residential buildings, it seems that the energy demand and primary energy required is lower than that of other European countries. Moreover, it seems that the age of residential buildings has low correlation with the energy demand while in contrast with other Northern and Central European countries, it is clear that the contribution of cooling energy requirements to the overall energy demand is quite significant. © 2010 Elsevier B.V. All rights reserved. Source


Kalogirou S.A.,Cyprus University of Technology | Maxoulis C.N.,Cyprus Scientific and Technical Chamber | Florides G. A.,Cyprus University of Technology | Panayiotou G. P.,Cyprus University of Technology | And 6 more authors.
Proceedings: CESB 2010 Prague - Central Europe towards Sustainable Building 'From Theory to Practice' | Year: 2010

The significance of the residential building sector in terms of energy consumption is well acknowledged. Several studies have shown that the potential of energy savings in this sector is quite significant. In this view the knowledge of the way the residential building stock of Cyprus behaves in terms of energy consumption is quite valuable. This knowledge will assist policy makers to formulate targeted measures aiming the improvement of energy efficiency and will provide valuable information for setting current legal standards and benchmarks in the energy performance certificate, a requirement of the 2002/91/EC Directive. Unfortunately, the existing knowledge on this subject is quite poor. As a remedy a research project supported by a national research grant is in operation since December 2008. This paper presents the outline, goals and methodology of this research project and the findings regarding the energy behaviour and other characteristics of the residential building stock of Cyprus. From the analysis of the results for about 500 residential buildings examined, it seems that the energy demand and primary energy required is lower than that of other European countries. Moreover, it seems that the age of residential buildings has low correlation with the energy demand. Finally, in contrast with other Northern and Central European countries, it is clear that the contribution of cooling energy requirements to the overall energy demand is quite significant. Source


Florides G.A.,Cyprus University of Technology | Pouloupatis P.D.,Cyprus University of Technology | Kalogirou S.,Cyprus University of Technology | Messaritis V.,Cyprus University of Technology | And 6 more authors.
Energy | Year: 2011

The ground can be used as an energy source, an energy sink, or for energy storage and for this reason ground characteristics should be available. Therefore the purpose of this paper is to present the recorded ground temperatures at eight representative sites of Cyprus, in relation to depth, time of year, geology and altitude and discuss the efficiency of Ground Coupled Heat Pumps. The ground temperature was recorded for a period of one year, from October 2009 to October 2010. According to the results obtained, in several locations in Cyprus the surface zone reaches a depth of 0.5 m. The shallow zone penetrates to 7-8 m and there after the deep zone follows in which the temperature remains constant throughout the year with a range between 18 and 23 °C. For the eight boreholes, additional geothermal data were also recorded like the type of ground and thermal conductivities of the various geologic layers. The data collected clearly indicate that there is a potential for the efficient use of Ground Coupled Heat Pumps (GCHPs) in Cyprus leading to significant savings in heating and cooling energy consumption. © 2011 Elsevier Ltd. Source


Florides G.,Cyprus University of Technology | Pouloupatis P.D.,Cyprus University of Technology | Kalogirou S.,Cyprus University of Technology | Messaritis V.,Cyprus University of Technology | And 6 more authors.
Renewable Energy | Year: 2013

A Project funded by the Research Promotion Foundation of Cyprus was undertaken by the Cyprus University of Technology and other collaborators, to investigate and determine the geothermal parameters of the ground in Cyprus since such information is currently unavailable. The purpose of this paper is to report on the ground temperatures collected by now, at the six representative sites in relation to depth, time of the year, structure of the ground and altitude and report on their impact on the efficiency of Ground Coupled Heat Pumps. Every month since October 2009, the temperature of the ground is being recorded along the depth of the boreholes. It is anticipated that the project will be completed by the end of 2010 and geothermal information will be collected and reported for all six locations. The data collected until now clearly indicate that there is a potential for the efficient use of GCHPs in Cyprus leading to significant savings in power. © 2012 Elsevier Ltd. Source


Panayiotou G.,Cyprus University of Technology | Maxoulis C.N.,Cyprus Scientific and Technical Chamber | Kalogirou S.A.,Cyprus University of Technology | Florides G.A.,Cyprus University of Technology | And 7 more authors.
Proceedings: CESB 2010 Prague - Central Europe towards Sustainable Building 'From Theory to Practice' | Year: 2010

In order to fulfil article 4 of the 2002/91/EC Directive (EPBD) a national methodology for the energy performance of buildings was drafted and approved by the Government of Cyprus in 2009. This methodology is in line with the European standards prepared to facilitate EPBD implementation and follows the asset rating approach that is, it represents the intrinsic annual energy use of a building under standardised conditions. CEN standards leave an option, quite suitable for existing and complex buildings, for operational rating, which is an energy rating based on measured amounts of delivered and exported energy. The calculated and measured rating exhibit advantages and disadvantages and as expected the results of the two approaches vary, since the measured rating approach takes into account the effect of user behaviour, the actual weather conditions and the realized (actual) thermal comfort conditions inside the building. This paper presents the Cyprus legal framework for adopting the EPBD and exhibits the Cyprus methodology for the energy performance of buildings. Moreover the advantages and disadvantages of the asset and operational rating approaches are discussed and a comparison of the results of these two approaches for a selected number of dwellings is presented. One of these cases is also examined with respect to the climatic conditions, by changing the climatic zone in which the building is erected. The latter reveals the effect of climate on the calculated energy requirements of the building for both heating and cooling. Source

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