Nearly Zero Energy Buildings: An Overview of the Main Construction Features across Europe

Paoletti, Giulia; Pascuas, Ramón Pascual; Pernetti, Roberta; Lollini, Roberto

doi:10.3390/buildings7020043

Cited by 58 publications

(33 citation statements)

References 16 publications

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“…Most activities are focused on improving insulation performance, for which frames using low-emissivity glass, argon gas, triple glass, and thermal bridging insulation materials are mainly applied. However, to implement zero-energy buildings [4,5], solar radiation control is crucial as well as insulation performance. Particularly in South Korea, where the winter and summer weather are clearly distinguished, the solar radiation inflow and blocking control of building envelopes can have a significant effect in terms of energy efficiency [6].…”

Section: Research Background and Objectivementioning

confidence: 99%

Evaluation of Energy and Daylight Performance of Old Office Buildings in South Korea with Curtain Walls Remodeled Using Polymer Dispersed Liquid Crystal (PDLC) Films

Oh¹,

Lee

Park³

et al. 2019

Energies

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Globally, energy standards for new buildings are being reinforced to improve energy efficiency, and remodeling policies are being promoted for old buildings. The South Korean Government is promoting green remodeling projects, and focusing on research and product development to improve the performance of old windows and curtain walls. In line with this, the present study proposes two remodeling methods using polymer dispersed liquid crystal (PDLC) films, which can adjust solar radiation for old office buildings. In addition, energy efficiency improvement and daylight performance according to remodeling were analyzed. Attaching PDLC films to the glass of old curtain walls was analyzed; this can reduce heating and cooling energy, reduce the annual discomfort glare occurrence rate, and increase the annual indoor appropriate illuminance ratio. Furthermore, producing a window by laminating a PDLC film between two sheets of glass and putting it over the existing curtain wall was also analyzed; this can reduce annual building energy consumption and the annual discomfort glare occurrence rate, and improve the annual indoor appropriate illuminance ratio. Therefore, PDLC film is expected to be applicable as a next-generation green remodeling material because using it in remodeling can improve energy efficiency of old office buildings and indoor daylight performance.

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Section: Research Background and Objectivementioning

confidence: 99%

Evaluation of Energy and Daylight Performance of Old Office Buildings in South Korea with Curtain Walls Remodeled Using Polymer Dispersed Liquid Crystal (PDLC) Films

Oh¹,

Lee

Park³

et al. 2019

Energies

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“…In general, the adoption of digitalization is considered as a requirement for achieving not only the EU's 2020 target for nearly zero-energy buildings (nZEB) [14], but also the 2030 long-term energy efficiency and renewable energy targets and the 2050 carbon economy goal [1]. According to recent studies, the European building stock is, however, far from being smart-ready today [15].…”

Section: Introductionmentioning

confidence: 99%

Applicability of the Smart Readiness Indicator for Cold Climate Countries

et al. 2019

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In the EU’s revised Energy Performance of Buildings Directive (EPBD), a smart readiness indicator (SRI) was introduced as an energy efficiency activity to promote smart ready technologies (SRT) in the building sector. The proposed methodology is based on the evaluation of building services and how they contribute on SRT. The purpose of this paper is to explore the applicability of the SRI to cold climate countries in Northern Europe. The Northern European countries are an interesting test environment for the indicator because of their advanced information and communication technology and high building energy consumption profiles. The findings imply that regardless of the SRI’s conceptualization as a system oriented (smart grid) approach, in its current form, it was not able to recognize the specific features of cold climate buildings, specifically those employing advanced district heating (DH) systems. Another, more practical, implication of the study was that due to the subjective nature of the proposed process for selecting SRI relevant building services, the applicability of SRI as a fair rating system across the EU member states is problematic.

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“…In this scenario, some European projects started dealing with the setup of a common database to provide data of nZEBs in several countries and climates [25]. The ZEBRA2020 project has been developed to monitor the market uptake of nZEBs in target countries and across Europe, and to provide data and recommendations on how to reach a high level of building performance [26].…”

Section: Introductionmentioning

confidence: 99%

Yearly operational performance of a nZEB in the Mediterranean climate

Causone

Tatti

Pietrobon

et al. 2019

Energy and Buildings

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Over the last decades, the reduction of the energy use in the building sector has become a topic of major investigation and policy development worldwide. Guidelines have been defined to drive governments and building construction stakeholders towards the retrofit of the existing building stock and to the construction of new highperformance buildings. However, availability of operational data is often limited, especially when it comes to high performance buildings in warm climates, although it is essential to define design approaches targeted to energy efficiency, to design smart energy grids and demand-response oriented energy programs. Buildings, such as living laboratories, may offer opportunities to implement and develop energy databases, to provide benchmarks and to study occupant behaviour under different operational conditions. The paper investigates the energy and thermal comfort performance of a residential building in the Mediterranean climate. The building, certified as Passivhaus and equipped with an advanced monitoring system, allows to test different control strategies, to study occupant behaviour and to provide real time operational data. In particular, the data analysis showed a positive energy balance on yearly basis, i.e. an energy use of 59.7 kWh/m 2 net/year vs. an on-site energy generation of 76.0 kWh/m 2 net/year. The energy breakdown highlighted, that energy uses related to user behaviour and comfort requests account for about 72 % of the total energy use, confirming that occupant behaviour is one of the major drivers of the operational energy use (and the related services) in high performance buildings.

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Nearly Zero Energy Buildings: An Overview of the Main Construction Features across Europe

Cited by 58 publications

References 16 publications

Evaluation of Energy and Daylight Performance of Old Office Buildings in South Korea with Curtain Walls Remodeled Using Polymer Dispersed Liquid Crystal (PDLC) Films

Evaluation of Energy and Daylight Performance of Old Office Buildings in South Korea with Curtain Walls Remodeled Using Polymer Dispersed Liquid Crystal (PDLC) Films

Applicability of the Smart Readiness Indicator for Cold Climate Countries

Yearly operational performance of a nZEB in the Mediterranean climate

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