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on the high-energy performance of a passive house . Sustainability , 7 ( 12 ), 16687 – 16702 . [4] Carbonaro C. , Cascone Y. , Fantucci S

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country, through a Diagnostic of Energy Performance (DEP) of the building, estimating the energy demand related to the thermal comfort, day-lighting and air quality, which mainly depends on the façade component design. 2 Diagnosis of energy performance

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Pollack Periodica
Authors: Chu Xiaohui, Ganjali Bonjar Mohammad Reza, Gantumur Tsovoodavaa, Rowell Ray Lim Shih, and Balint Baranyai

Along with its rapid growth in economy, the protection of heritage buildings has recently gained importance and awareness in China. This paper investigates the energy performance of a heritage building (Wang’s House) in Shanghai, as well as the thermal comfort of the users, using dynamic thermal simulations. The analysis showed that heating accounts as the highest energy demand, followed by cooling and lighting. The resulting study will help the authors to identify various sustainable strategies to improve users comfort as well as reduce the energy demand of heritage buildings in China.

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Building life cycle assessment is getting more and more attention within the topic of environmental impact caused by the built environment. Although more and more research focus on the embodied impact of buildings, the investigation of the operational energy use still needs attention. The majority of the building stock still does not comply with the nearly zero energy requirements. Also, in case of retrofitting, when most of the embodied impact is already spent on the existing structures (and so immutable), the importance of the operational energy rises. There are several methods to calculate the energy performance of buildings covering the range from simplified seasonal methods to detailed hourly energy simulations. Not only the accuracy of the calculations, but the computational time can be significantly different within the methods. The latter is especially important in case of optimization, when there is limited time to perform one calculation. Our research shows that the use of different calculation techniques can lead to different optima for environmental impacts in case of retrofitting. In this paper we compare these calculation methods with focus on computational time, accuracy and applicability to environmental optimization of buildings. We present the results in a case study of the retrofitting of a middle-sized apartment house in Hungary.

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1 Introduction The energy performance of buildings has been one of the major issues that should be tackled to face climate change. In the European Union (EU), buildings are responsible for 40% of energy consumption [ 1 ]; whereas residential

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. , Himmelsbach S. ( 2015 ), Energy performance of façade integrated decentralised ventilation systems . Energy and Buildings , 107 , 172 – 180 . DOI: 10.1016/j.enbuild.2015.08.015. [5

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the functional and design requirements of today's age? How great are the energy performance improvements after renovation? What are the main challenges and ‘tuning-limits’ in design and construction for one of the most characteristic Hungarian family

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commercial facades versus traditional construction: Energy performance and comparative analysis . Journal of Energy Engineering , 141 ( 4 ), 04014041 . [5] Fiorito

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conducted to understand the impact of climate changes on building's energy performance in different countries and regions. Frank [ 6 ] has found that for the period 2050–2100, the annual cooling energy demand for office buildings could increase by 223

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. [4] The Energy Efficiency Directive 2012/27/EU (“ EED ”). [5] EC ( 2010 ), Directive 2010/31/EU on the Energy Performance of

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