The present thesis is dedicated to energy auditing and recommending energy saving measures for Brambati S.p.a., an Italian medium size company which is a leader in the production of coffee processing machineries. Accordingly, an auditing procedure has been performed including all of the corresponding conventional steps: collection of data, analysis of the obtained values, developing the energy model of the company, determining the main energy consumption sources, and proposing energy saving measures in order to reduce the electricity and natural gas consumptions. Analysing the obtained data has revealed that heating, and particularly heating of the so-called roasters department, represents the highest share of the thermal consumption of the company; thus, the next step has been focused on simulating the behaviour of the building using Termolog™. By employing the mentioned energy simulation software, which is developed based on the latest corresponding Italian regulations (such as UNI EN ISO 13790, UNI/TS 11300-1, 2, 3, 4, 5, 6), the key sources of energy dispersion in the building are identified. Considering the obtained results and the practical feasibility, most suitable measures in order to reduce the corresponding thermal needs are proposed. It has been estimated that, by adopting the most promising proposed measure, which consists of substitution of the windows and insulation of the roof, the thermal consumption can be reduced by 48.85% (equivalent to almost 19.500 m3 of natural gas). The corresponding payback period has also been predicted to be 6.5 years (excluding the benefits of Italian incentives). On the other hand, regarding the electrical energy, the most notable shares of consumption have been identified to be corresponding to the lighting of the production departments and the painting activity. In order to reduce the former consumption, it has been proposed to replace the existing obsolete lighting units of the company with an LED lighting system. The latter measures, with a payback period of 2.67 years, leads to reduction of the absorbed energy equal to 86.379 kWh; The main suggested interventions in order to decrease the consumption of the painting activity include utilizing an inverter to vary the frequency of the centrifugal fan, which supplies the painting chamber, and proposing a control system for partial loads; measures which are estimated to reduce the corresponding consumption by more than 45.000 kWh.
Questa tesi è finalizzata alla diagnosi energetica e alla proposta di misure di efficientamento energetico per Brambati S.p.a., una PMI italiana che è leader nella produzione di impianti per la lavorazione del caffè. E’ stato quindi affrontato un percorso di diagnosi che include tutti i relativi passaggi: raccolta dati, analisi dei valori ottenuti, sviluppo del modello energetico dell’azienda, determinazione dei principali centri di consumo e proposta di misure volte all’efficienza energetica per ridurre l’utilizzo di elettricità e gas naturale. Dall’analisi dei dati ottenuti, è risultato che il riscaldamento, ed in particolare quello dedicato al capannone “tostatrici”, rappresenta il contributo più grande per quanto riguarda il consumo termico dell’azienda; perciò, lo step successivo è stata la simulazione del comportamento energetico dell’edificio, attraverso l’utilizzo del software commerciale Termolog™. Per mezzo del sopracitato software, che è basato sulle principali normative italiane in merito alla performance energetica degli edifice (es.: UNI EN ISO 13790, UNI/TS 11300-1, 2, 3, 4, 5, 6), sono state individuate le principali cause della dispersione termica dell’involucro edilizio. Analizzando i risultati e considerando la praticabilità, sono state proposte le misure più adatte per ridurne il relativo fabbisogno termico. E’ stato stimato che, applicando la misura più efficace (sostituzione dei componenti vetrati e coibentazione del tetto), i consume possono essere ridotti del 48.85%, equivalenti a circa 19.500 m3 di gas naturale. Il corrispondente tempo di ritorno dell’investimento è risultato di sei anni e mezzo, escludendo oltretutto le detrazioni fiscali della Legge Finanziaria 2007. Per quanto riguarda invece l’energia elettrica, il contributo maggiore dei consumi è rappresentato dall’illuminazione nei reparti produttivi e nelle procedure di verniciatura. Al fine di ridurre i consumi, è stato proposto di sostituire gli obsoleti corpi illuminanti con un sistema di illuminazione a LED. Questo intervento, con un tempo di ritorno pari a 2.67 anni, porterebbe alla riduzione di 86.379 kWh di energia assorbita. Le misure riguardanti l’attività di verniciatura includono l’utilizzo di un inverter per variare la frequenza del ventilatore centrifugo, che crea depressione nella camera, e la proposta di un sistema di regolazione per i carichi parziali; per questi interventi il consumo di energia è stato stimato diminuire per più di 45.000 kWh.
Energy auditing and proposing energy saving measures for an Italian SME through building energy simulation
BENEVENTO, LORENZO
2015/2016
Abstract
The present thesis is dedicated to energy auditing and recommending energy saving measures for Brambati S.p.a., an Italian medium size company which is a leader in the production of coffee processing machineries. Accordingly, an auditing procedure has been performed including all of the corresponding conventional steps: collection of data, analysis of the obtained values, developing the energy model of the company, determining the main energy consumption sources, and proposing energy saving measures in order to reduce the electricity and natural gas consumptions. Analysing the obtained data has revealed that heating, and particularly heating of the so-called roasters department, represents the highest share of the thermal consumption of the company; thus, the next step has been focused on simulating the behaviour of the building using Termolog™. By employing the mentioned energy simulation software, which is developed based on the latest corresponding Italian regulations (such as UNI EN ISO 13790, UNI/TS 11300-1, 2, 3, 4, 5, 6), the key sources of energy dispersion in the building are identified. Considering the obtained results and the practical feasibility, most suitable measures in order to reduce the corresponding thermal needs are proposed. It has been estimated that, by adopting the most promising proposed measure, which consists of substitution of the windows and insulation of the roof, the thermal consumption can be reduced by 48.85% (equivalent to almost 19.500 m3 of natural gas). The corresponding payback period has also been predicted to be 6.5 years (excluding the benefits of Italian incentives). On the other hand, regarding the electrical energy, the most notable shares of consumption have been identified to be corresponding to the lighting of the production departments and the painting activity. In order to reduce the former consumption, it has been proposed to replace the existing obsolete lighting units of the company with an LED lighting system. The latter measures, with a payback period of 2.67 years, leads to reduction of the absorbed energy equal to 86.379 kWh; The main suggested interventions in order to decrease the consumption of the painting activity include utilizing an inverter to vary the frequency of the centrifugal fan, which supplies the painting chamber, and proposing a control system for partial loads; measures which are estimated to reduce the corresponding consumption by more than 45.000 kWh.File | Dimensione | Formato | |
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https://hdl.handle.net/10589/132703