This thesis aimed at analyzing the effect of the automation, control and management systems in valuing energy needs for the air-conditioning/climate control of a building for use as offices both in winter and in summertime : this has been pointed out through the study of the European Standard UNI EN 15232 “Energy performance of buildings – Impact of Building Automation,Controls and Building Management”. The applied method was based on a close examination of the Standard aiming at identifying its main aspects and the practice application of these latter. Afterwards, the obtained data have been valued by means of simulations on “ideal” and “real” models. Therefore, all that has been realised thanks to some pieces of research in the Energy Engineering Department of Polytechnic of Milan in order to pick out the archetypal buildings to be used for the analysis: we needed to define the kind of homogeneous groups as far as the geometrical and technological features is concerned, as these latter have a great influence on the energetic exchange between the building and the outside environment. Moreover, the analysis have been developed through the use of the software called TRNSYS, created by the “Solar Energy Laboratory” of the University of Wisconsin for the study of building-plant systems in dynamic regimes. The first case of the study has been realised to determine BACS coefficients (building automatic control system) on an “ideal” plant in a tower building by means of user profiles and operation time defined by the European Standard: all that has been made varying the typological features of the building skin. The second case pointed out the study of a “real” plant of the same tower building through the implementation of automatic controls in heating, cooling, ventilation and air- conditioning systems: the aim of this analysis was to achieve the possible energy saving of the building. In conclusion, the results of this piece of research have shown that actually the data provided by the European Standard cannot be applied; this is due mainly to the variability of these systems behavior depending on the type of building-plant analysed: in addition, we have to underline that the valuation of the actual generated contribution has to be discerned by the modification of the boundary conditions, as imposed by the European Standard.
La presente tesi è stata svolta al fine di analizzare l’effetto che i sistemi di automazione, controllo e gestione hanno nella valutazione del fabbisogno energetico per la climatizzazione invernale ed estiva di un edificio adibito ad uffici, tramite lo studio della norma UNI EN 15232 “Energy performance of buildings – Impact of Building Automation,Controls and Building Management”. La metodologia applicata si è basata su una disamina iniziale della normativa con lo scopo di individuare gli aspetti principali della stessa e la loro applicazione pratica. Il passo successivo è stato la valutazione dei dati ottenuti tramite simulazioni su modelli ideali e reali. Per realizzare ciò è stato effettuato uno studio di ricerca nel Dipartimento di Ingegneria Energetica del Politecnico di Milano, al fine di individuare gli archetipi di edifici da utilizzare per le analisi, attraverso la definizione di gruppi omogenei relativamente alle caratteristiche geometriche e tecnologiche,.le quali prime fra tutte condizionano lo scambio energetico tra l’edificio e l’ambiente esterno. Le analisi sono state svolte attraverso l’utilizzo del software TRNSYS, realizzato dal “Solar Energy Laboratory” dell’Università del Wisconsin per lo studio in regime dinamico di sistemi edifici/impianti. Il primo caso di studio realizzato è stato sviluppato al fine di determinare i coefficienti BACS (building automatic control system) su un impianto “ideale” in un edificio a torre, con profili d’uso definiti dalla normativa, variando le caratteristiche tipologiche dell’involucro. Il secondo caso di studio si è rivolto invece all’analisi di un impianto “reale” sempre su un edificio a torre, con l’implementazione successiva di controlli automatici nei sistemi di riscaldamento, raffrescamento, ventilazione e condizionamento, con l’obiettivo di valutare l’eventuale risparmio energetico conseguito. I risultati ottenuti hanno mostrato come i dati forniti dalla normativa non sono realmente applicabili; ciò è dovuto principalmente alla variabilità del comportamento che tali sistemi hanno in funzione del tipo di edificio-impianto analizzato,oltre al fatto che la valutazione dell’effettivo contributo generato deve discernere dalla modifica delle condizioni al contorno, come la normativa impone.
Valutazione della normativa UNI EN 15232 nel calcolo del fabbisogno energetico degli edifici adibiti ad ufficio
ANTONUCCI, DANIELE
2011/2012
Abstract
This thesis aimed at analyzing the effect of the automation, control and management systems in valuing energy needs for the air-conditioning/climate control of a building for use as offices both in winter and in summertime : this has been pointed out through the study of the European Standard UNI EN 15232 “Energy performance of buildings – Impact of Building Automation,Controls and Building Management”. The applied method was based on a close examination of the Standard aiming at identifying its main aspects and the practice application of these latter. Afterwards, the obtained data have been valued by means of simulations on “ideal” and “real” models. Therefore, all that has been realised thanks to some pieces of research in the Energy Engineering Department of Polytechnic of Milan in order to pick out the archetypal buildings to be used for the analysis: we needed to define the kind of homogeneous groups as far as the geometrical and technological features is concerned, as these latter have a great influence on the energetic exchange between the building and the outside environment. Moreover, the analysis have been developed through the use of the software called TRNSYS, created by the “Solar Energy Laboratory” of the University of Wisconsin for the study of building-plant systems in dynamic regimes. The first case of the study has been realised to determine BACS coefficients (building automatic control system) on an “ideal” plant in a tower building by means of user profiles and operation time defined by the European Standard: all that has been made varying the typological features of the building skin. The second case pointed out the study of a “real” plant of the same tower building through the implementation of automatic controls in heating, cooling, ventilation and air- conditioning systems: the aim of this analysis was to achieve the possible energy saving of the building. In conclusion, the results of this piece of research have shown that actually the data provided by the European Standard cannot be applied; this is due mainly to the variability of these systems behavior depending on the type of building-plant analysed: in addition, we have to underline that the valuation of the actual generated contribution has to be discerned by the modification of the boundary conditions, as imposed by the European Standard.| File | Dimensione | Formato | |
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Descrizione: Valutazione della norma uni en 15232 nel calcolo del fabbisogno degli edifici adibiti ad ufficio
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https://hdl.handle.net/10589/49041