A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Analysis of the insolation criteria for nearly-zero energy buildings in Estonia
Nearly-zero energy building features have great impact on the overheating of residential premises under various urban conditions in which the building meets the applicable insolation criteria in Estonia. Different building regulations require measures that often conflict with each other. The features necessary for the energy consumption required for nearly-zero energy buildings, the distance required for the buildings to guarantee the minimum insolation hours, and the maximum quantity of degree-hour in the mandatory period are characteristics that need to be carefully integrated; otherwise, the achievement of one or two could prevent the possibility of satisfying the others. Have been studied variations of internal temperatures in a residential premises located in Tallinn, Estonia, with different orientations and neighboring building distances, on different floors and in the different configurations of windows closed, with windows opened and with shadings. The outcomes show that a nearly-zero energy building, when located at a distance from the surrounding buildings that fulfils the insolation criteria, dramatically exceeds the maximum number of degree-hours. This would lead to the need for additional energy in order to cool the residential premises, so to compromise the fulfilling of nearly-zero energy building's consumption target, or to the use of passive strategies. The use of natural ventilation, in addition to mechanical ventilation, or operable external shadings, decrease significantly the variations of interior temperature and maximum degree-hour, that in most part of the cases fulfill the requirements. Therefore in nearly-zero energy buildings passive strategies are mandatory also in Northern latitudes and the different requirements for daylight standard, indoor temperature and energy consumption must be carefully integrated in order to yield a design that could fulfill them.
Analysis of the insolation criteria for nearly-zero energy buildings in Estonia
Nearly-zero energy building features have great impact on the overheating of residential premises under various urban conditions in which the building meets the applicable insolation criteria in Estonia. Different building regulations require measures that often conflict with each other. The features necessary for the energy consumption required for nearly-zero energy buildings, the distance required for the buildings to guarantee the minimum insolation hours, and the maximum quantity of degree-hour in the mandatory period are characteristics that need to be carefully integrated; otherwise, the achievement of one or two could prevent the possibility of satisfying the others. Have been studied variations of internal temperatures in a residential premises located in Tallinn, Estonia, with different orientations and neighboring building distances, on different floors and in the different configurations of windows closed, with windows opened and with shadings. The outcomes show that a nearly-zero energy building, when located at a distance from the surrounding buildings that fulfils the insolation criteria, dramatically exceeds the maximum number of degree-hours. This would lead to the need for additional energy in order to cool the residential premises, so to compromise the fulfilling of nearly-zero energy building's consumption target, or to the use of passive strategies. The use of natural ventilation, in addition to mechanical ventilation, or operable external shadings, decrease significantly the variations of interior temperature and maximum degree-hour, that in most part of the cases fulfill the requirements. Therefore in nearly-zero energy buildings passive strategies are mandatory also in Northern latitudes and the different requirements for daylight standard, indoor temperature and energy consumption must be carefully integrated in order to yield a design that could fulfill them.
Analysis of the insolation criteria for nearly-zero energy buildings in Estonia
Voll, Hendrik (author) / De luca, Francesco (author) / Pavlovas, Vitalis (author)
Science and Technology for the Built Environment ; 22 ; 939-950
2016-10-02
12 pages
Article (Journal)
Electronic Resource
English
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