The energy consumption of buildings has grown hand in hand with the improvement of the lifestyles of the occupants. This growth in consumption of housing affects the environmental and ecological conditions. Today, the main challenge is to increase the awareness of the users, on the one hand, by maintaining a high lifestyle, and on the other hand by reducing consumptions so as to minimize the impact on the environment. In a construction sector constantly looking for new technologies for energy saving and energy efficiency, the role of the end user becomes crucial for the optimal management and responsible use of resources. The operating conditions of the macro "building-plant-users" system are determined or verified by methods of the energy performance calculation shown in the European Standard, EN 15603:2008. These methods have a different degree of detail depending on the purpose. The standard calculation methods used in energy certification are useful for evaluating the energy condition of the building stock or for comparing the consumptions of several buildings. The design and tailored calculation methods based on design data and real consumption, however , allow the characteristics of the building envelope, plant and user behaviour to be analysed in order to identify the real energy needs and any malfunctions, performing an energy audit of the system that allows the current status of energy use to be photographed. The standard method is based on a steady state approach in which use and climate are represented according to standard conditions and as built. The design method is based on standard use and climate but the building is represented as designed. The tailored method uses actual data for use, climate and building. Finally, the standard includes the measured or operational method based on real energy consumption and the characteristics of the building. In this work the calcultated methods are evaluated and the results are compared with the measured method, using a monitored case study.
Energy Performance of Buildings: A Study of the Differences between Assessment Methods
L Belussi;L Danza;I Meroni;
2014
Abstract
The energy consumption of buildings has grown hand in hand with the improvement of the lifestyles of the occupants. This growth in consumption of housing affects the environmental and ecological conditions. Today, the main challenge is to increase the awareness of the users, on the one hand, by maintaining a high lifestyle, and on the other hand by reducing consumptions so as to minimize the impact on the environment. In a construction sector constantly looking for new technologies for energy saving and energy efficiency, the role of the end user becomes crucial for the optimal management and responsible use of resources. The operating conditions of the macro "building-plant-users" system are determined or verified by methods of the energy performance calculation shown in the European Standard, EN 15603:2008. These methods have a different degree of detail depending on the purpose. The standard calculation methods used in energy certification are useful for evaluating the energy condition of the building stock or for comparing the consumptions of several buildings. The design and tailored calculation methods based on design data and real consumption, however , allow the characteristics of the building envelope, plant and user behaviour to be analysed in order to identify the real energy needs and any malfunctions, performing an energy audit of the system that allows the current status of energy use to be photographed. The standard method is based on a steady state approach in which use and climate are represented according to standard conditions and as built. The design method is based on standard use and climate but the building is represented as designed. The tailored method uses actual data for use, climate and building. Finally, the standard includes the measured or operational method based on real energy consumption and the characteristics of the building. In this work the calcultated methods are evaluated and the results are compared with the measured method, using a monitored case study.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
