Energy Refurbishment Towards Nearly Zero Energy Multi-family Houses, for Cyprus

Serghides, Despina; Michaelidou, Maria; Christofi, Maria; Dimitriou, Stella; Katafygiotou, Martha

doi:10.1016/j.proenv.2017.03.068

Cited by 14 publications

(10 citation statements)

References 4 publications

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“…The implementation of a double-glazed façade is straight-forward and takes less time to integrate an additional glass layer with a simple support structure without affecting the building operation. Some of the retrofit studies [10][11][12][13][14][15] show that glazing plays a critical part in improving the performance of existing buildings toward the net-zero energy building (nZEB) target. Out of the several commonly implemented building retrofit options, upgrading the window type and façade insulation are preferable choices for performance improvement [14].…”

Section: Façade Types and Characteristicsmentioning

confidence: 99%

“…Out of the several commonly implemented building retrofit options, upgrading the window type and façade insulation are preferable choices for performance improvement [14]. Some of the options such as replacing single-glazed to double-glazed windows [13] and replacing single clear glass to double grey low-e glazing [16] reduce the cooling load substantially and shows an economic impact with a reasonable payback period. Smith et al [17] introduced a secondary glazing (or internal storm windows) as an alternative to retrofitted insulated glazing units (IGUs) in existing domestic single-glazed window frames.…”

Section: Façade Types and Characteristicsmentioning

confidence: 99%

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Effect of Existing Façade’s Construction and Orientation on the Performance of Low-E-Based Retrofit Double Glazing in Tropical Climate

2020

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This paper investigates the effect of an existing façade’s construction (viz. clear/grey/solar film, with and without external shade) and orientation on the performance of low-e (hard coat)-based retrofit double glazing in a tropical climate. The performance of double-glazed façades is characterized by the ability to reduce solar heat gain and the consequent reduction in power consumption of air-conditioning systems. This study involves a real-life test-bedding of a low-e (hard coat)-based retrofit double-glazing façade for a few specific cases—clear glass southeast façade without shade, clear glass southwest façade with external shade, and northwest façade with solar film and external shade. Subsequently, energy modelling simulations were done to analyze other scenarios involving various combinations of façade orientation (north, south, west, and east) and façade material (clear glass, tinted grey glass, clear glass with solar film) with and without external sunshades. The east/west-facing façades had a higher impact on the retrofit solution, and more so when the existing façade was of tinted glass or with solar film. For the case analyzed, with a window-to-wall ratio of 8% (based on overall building envelope), a grey tinted east-facing façade could benefit from annual average HVAC energy savings of up to 5.9%.

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Section: Façade Types and Characteristicsmentioning

confidence: 99%

Section: Façade Types and Characteristicsmentioning

confidence: 99%

Effect of Existing Façade’s Construction and Orientation on the Performance of Low-E-Based Retrofit Double Glazing in Tropical Climate

2020

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“…In particular, Germany, Denmark, Ireland, the United Kingdom, and Belgium are the countries whose national legislation had already established standards that were among the highest of the examined countries [23][24][25][26].…”

Section: The Relation Between Policy Implementation and Nzeb Trainingmentioning

confidence: 99%

The Social, Educational, and Market Scenario for nZEB in Europe

et al. 2018

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Nearly Zero Energy Buildings (nZEB) are a significant part of the energy efficiency strategy of the European Union. As buildings represent approximately 40% of the final energy use in Europe, the reduction of their energy demand is key for a sustainable future. This paper takes a qualitative approach and presents data about professional and market barriers, as well as the educational market in relation to the implementation of nZEB policies for new and retrofit buildings in 11 European countries. Different levels of policy enactments and market penetration are reported and are generally found to be more advanced in western and central European countries. Furthermore, gender equality is examined in the building sector in relation to nZEB and presents significant gaps, with a more balanced situation reported in southern Europe. The accreditation and targeted education of nZEB experts is still almost non-existent in the examined countries, and the need for training of building professionals is highlighted as a critical missing component of current policy. This research aims to be the first step towards the creation of educational material and programmes as a mean to accelerate the transition to nZEB.

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“…Previous studies on the Cyprus housing stock investigated the impact of different refurbishment scenarios on the energy consumption of different typologies of dwellings, including old Multi Family House and the corresponding savings [16][17][18][19][20][21]. The studies demonstrated the high effectiveness of the insulation on initially uninsulated buildings, the unviability of further insulating the envelope and the high contribution of the PV systems in the reduction of the greenhouse gases.…”

Section: Literature Reviewmentioning

confidence: 99%

Achieving Nearly Zero Energy Multi-family Houses in Cyprus through Energy Refurbishments

Serghides¹,

Dimitriou²,

Michaelidou³

et al. 2017

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Residential buildings account for the 63% of the total energy consumption of the building stock. The existing residential building stock exceeds the number of newly built dwellings in most developed countries. Therefore, the energy efficient renovation of the existing housing stock is imperative in order to reduce the building energy consumption. For this reason, European Union ranked the improvement of the buildings' energy performance as a high priority in its research agenda. Following Europe's 20:20:20 objective, this case study investigates refurbishment scenarios in order to achieve Nearly Zero Energy Buildings (NZEBs) in Cyprus. The research focuses on the Multi-family House typology, as classified in the framework of the Intelligent Energy Europe EPISCOPE project and specifically on retrofitting a Multi-family building constructed after 2006. A representative Multi-family building from the corresponding residential building typology in Cyprus was chosen and modelled using the software interface of the official Simplified Building Energy Model tool (iSBEM_Cy) for issuing Energy Performance Certificates (EPC). The study investigates whether it is possible for such a building to reach the Nearly Zero Energy Building standards with the implementation of the national energy performance requirements and identifies the lurking obstacles and challenges through building simulations.

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Energy Refurbishment Towards Nearly Zero Energy Multi-family Houses, for Cyprus

Cited by 14 publications

References 4 publications

Effect of Existing Façade’s Construction and Orientation on the Performance of Low-E-Based Retrofit Double Glazing in Tropical Climate

Effect of Existing Façade’s Construction and Orientation on the Performance of Low-E-Based Retrofit Double Glazing in Tropical Climate

The Social, Educational, and Market Scenario for nZEB in Europe

Achieving Nearly Zero Energy Multi-family Houses in Cyprus through Energy Refurbishments

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