![image.png](https://images.hive.blog/DQmP6XWCjm8WNMKWePRVUrbmoey7wnCpRqRtE1V7EWA3xXV/image.png) **[ENGLISH]** The concept of energy saving is spreading more and more, even among ordinary people. Analyzing the European territory, according to some calculations buildings are responsible for 40% of global energy consumption. So we can deduce that today the energy balance of a building is a rather important data regarding energy consumption and the future of our world. We can start by saying that the energy balance of a building is based on the characteristics of the building and the systems installed in it. In the calculation of the winter energy balance of the building are included the heat losses due to transmission and ventilation, also fall in the winter balance the solar contributions. The standard that concerns precisely the energy performance of buildings is the UNI/TS 11300-1:2014. This standard describes the determination of the thermal energy needs of the building for summer and winter air conditioning. The standard provides three main definitions: 1-opaque envelope, which is the opaque component of closure and delimitation of the heated space from the outside. 2-Dispersing surface, or the gross area of the dispersing elements that define and enclose the gross volume heated by the building (walls, roof and floor slabs) 3-energy performance of a building, i.e. the amount of energy actually consumed or expected to be needed to meet the various needs associated with standard use of the building. At this point we can talk about the energy balance equation, with which we can calculate the ideal thermal energy requirement for air conditioning. Below we can give an example of the calculation of the thermal energy demand for winter air conditioning. Qh,nd=QH,ht- ηH,gn*Qgn Where: Qh,nd: thermal energy demand for winter air conditioning QH,ht: total heat exchange between confined and external environment ηH,gn: utilization factor Qgn: total heat input **Conclusions** *Knowing the energy balance of a building is fundamental. The calculation of energy needs is nowadays very important in the design and construction of new buildings as well as in the interventions on existing buildings.* --- **[ITALIAN]** Il concetto di risparmio energetico si sta diffondendo sempre di più, anche tra le persone comuni. Analizzando il territorio europeo, secondo alcuni calcoli gli edifici sono responsabili del 40% del consumo globale di energia. Quindi possiamo dedurre che ad oggi il bilancio energetico di un edificio è un dato piuttosto importante per quanto riguarda il consumo energetico e il futuro del nostro mondo. Possiamo partire dicendo che il bilancio energetico di un edificio è basato sulle caratteristiche dell’edificio e degli impianti in esso installati. Nel calcolo del bilancio energetico invernale dell’edificio rientrano le perdite di calore per trasmissione e ventilazione, inoltre rientrano nel bilancio invernale anche gli apporti solari. La norma che riguarda proprio le prestazioni energetiche degli edifici e la norma UNI/TS 11300-1:2014. In questa norma viene descritta la determinazione del fabbisogno di energia termica dell’edificio per la climatizzazione estiva ed invernale. La norma fornisce tre definizioni principali: 1-Involucro opaco, ovvero la componente opaca di chiusura e delimitazione dello spazio riscaldato dall’esterno. 2-superficie disperdente, ovvero l’area lorda degli elementi disperdenti che definiscono e racchiudono il volume lordo riscaldato dall’edificio (pareti, solaio di copertura e solai controterra) 3-prestazione energetica di un edificio, ovvero la quantità di energia effettivamente consumata o che si prevede essere necessaria per soddisfare i vari bisogni connessi ad uso standard dell’edificio. A questo punto possiamo parlare dell’equazione di bilancio energetico, con la quale possiamo calcolare il fabbisogno ideale di energia termica per la climatizzazione. Qui di seguito possiamo fare un esempio del calcolo del fabbisogno di energia termica per la climatizzazione invernale. Qh,nd=QH,ht- ηH,gn*Qgn Dove: Qh,nd: fabbisogno di energia termica per la climatizzazione invernale QH,ht: scambio termico totale tra ambiente confinato ed esterno ηH,gn: fattore di utilizzazione Qgn: apporti termici totali **Conclusioni** *Conoscere il bilancio energetico di un edificio è fondamentale. Il calcolo del fabbisogno energetico oggi è importantissimo nella progettazione e nella costruzione di nuovi edifici nonché negli interventi sugli edifici esistenti.* **THE END**
author | stefano.massari |
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permlink | energy-certifier-the-energy-balance-of-the-building |
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Knowledge about energy saving is really necessary. It is important for our future
author | hashir123 |
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I agree and that is precisely why I want to start talking about it
author | stefano.massari |
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Questo è un argomento molto interessante e spero che i governi si concentrino maggiormente sull'argomento
author | lupega |
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Io credo proprio che lo faranno
author | stefano.massari |
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thanks for the explanation of energy.
author | rikoy |
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Energy saving will be one of the most discussed topics in this decade, thanks for stopping by
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Ciao @libertycrypto27, ti taggo in un commento di questo mio post. Ho fatto questo post sull’interfaccia social POB. So qualcosa sul risparmio energetico, volevo fare degli articoli a riguardo. Mi puoi suggerire dei TAG per questa tipologia di post?
author | stefano.massari |
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