Opportunità del nuovo Conto Termico 2.0 – Palmanova, 17 maggio

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Seminario sulle opportunità del nuovo Conto Termico 2.0 a Palmanova il 17 maggio. Organizzato da CNA Regionale FVG con la collaborazione di EnergiCna, lo staff di ECIPA Nordest che si occupa di servizi in materia di energia. Buona partecipazione e grande interesse per i nostri servizi!
Per info www.energicna.it

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Annunci

Obbligo di rendicontazione dei risparmi energetici

Con il 5 dicembre 2015 si è esaurito l’obbligo di diagnosi energetiche introdotto dal D.Lgs. 102/14 per le Grandi Imprese e per le energivore. L’obbligo è ciclico con cadenza quadriennale, la maggior parte dei soggetti dovrà ripetere la diagnosi nel 2019. L’adempimento sta avendo uno strascico di sanzioni per i soggetti obbligati che non hanno caricato la diagnosi nei termini stabiliti.

Ma il D. Lgs. 102/14, all’art. 8 comma 7 ha anche stabilito che “I risparmi di energia per i quali non siano stati riconosciuti i titoli di efficienza energetica rispetto all’anno precedente e in condizioni normalizzate, riscontrabili dai bilanci energetici predisposti da imprese che attuano un sistema di gestione dell’energia conforme alla norma ISO 50001, e dagli audit previsti dal presente decreto sono comunicati dalle imprese all’ENEA e concorrono al raggiungimento degli obbiettivi di cui al presente articolo.»

Quindi se ne ricava che:

  • I soggetti interessati sono quelli che sono obbligati alle diagnosi e tutte le imprese che hanno implementato un sistema di gestione dell’energia secondo la ISO 50001;
  • I risparmi totali conseguiti per ogni anno solare, dovranno essere comunicati ad ENEA con cadenza annuale, entro il 31 marzo dell’anno successivo al conseguimento dei risparmi stessi.
  • I risparmi da rendicontare sono tutti quelli riconducibili non soltanto ad interventi di efficientamento realizzati sul ciclo produttivo (tecnologici), ma anche al semplice risparmio energetico derivante da qualunque modifica, anche comportamentale, della gestione del ciclo produttivo stesso;

Occorre ricordare inoltre che i consumi devono essere “normalizzati” tramite fattori che devono essere scelti in modo da essere rappresentativi dell’attività del sito, come ad esempio:

  • Kg di produzione per aziende produttive;
  • Km percorsi per flotte aziendali;
  • GG (estivi e/o invernali) per aree aperte al pubblico e climatizzate

E’ nata: pubblicata la norma ISO 50002

Ultima nata della famiglia 50000 la norma ISO 50002 descrive le modalità di esecuzione degli energy audits, fondamentali per ogni intervento efficenziale.

Abstract

ISO 50002:2014 specifies the process requirements for carrying out an energy audit in relation to energy performance. It is applicable to all types of establishments and organizations, and all forms of energy and energy use.

ISO 50002:2014 specifies the principles of carrying out energy audits, requirements for the common processes during energy audits, and deliverables for energy audits.

ISO 50002:2014 does not address the requirements for selection and evaluation of the competence of bodies providing energy audit services, and it does not cover the auditing of an organization’s energy management system, as these are described in ISO 50003.

ISO 50002:2014 also provides informative guidance on its use.

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Kick Off Your Energy Management Program

When you walk into a big industrial plant, it is easy to be overwhelmed by the question “where on earth is all the energy going?” When I was a young engineer, I certainly was overwhelmed and I spent a lot of time doing detailed work on unimportant things. With most things in lifethe 80/20 rule is true and it is true for energy usage as well.

If you are adopting a systematic approach to energy management, you need to know:

  1. how much energy you buy in (your energy sources) and
  2. what is your end-use of that energy, and in particular, your significant energy uses (SEUs)

When you know the end uses of your energy in industrial processes or in buildings, you are in a position to make very dramatic energy reductions – instead of tinkering around in the utilities building.

In an ideal world:

  • you would like to plot your Sankey (energy flow) diagram
  • then identify your biggest energy saving opportunities by focusing on the significant energy uses

For example:

  1. In a breakfast cereal plant, we found that 70% of all of the energy was used in the drying of finished cereal. This made us focus on energy saving opportunities around the recovery of heat and latent heat from the dryer exhaust.
  2. In a high-end pharmaceutical manufacturing plant, we found that 80% of all of the end-use energy was used for climate control of clean rooms. This caused us to focus on HVAC, scheduling of clean room operation and re-examining regulatory requirements.
  3. In a university, we found that energy use was very widely fragmented and that most energy use was under the control of staff in local departments. This caused us to focus the energy management program around training and communication activities for employees and students.
  4. In a supermarket chain, we found that only 2% of energy was used for lighting of outdoor car parks. Before this analysis, some supermarkets had been investing time and effort on energy reduction in car park lighting because customers had complained about apparent energy wastage. After the analysis, the supermarkets re-focused on the bigger energy uses such as refrigeration, chilled displays and interior lighting.

When it comes to figuring out your end-use energy, the two common approaches are:

  • Calculation – by energy specialists using the equipment power ratings, operating schedules, advanced calculation techniques, sometimes including simulation
  • Metering – designing, tendering and substantially investing in automated metering systems

Both these approaches require a substantial investment of time and/or money – and this can delay your start on taking energy-saving actions.

The question is this: would you get better value for money by focusing on the most important energy uses from the start, rather than making an equal distribution of time and money across the entire plant?

If you are hiring energy analysis specialists, you could focus them on the biggest energy consumers.

Regarding metering, too many people “over- meter” too early and with the result that they have poorly designed and unbalanced metering systems – and they spend too much money on the wrong thing. For example, I very often see industrial plants that have hundreds of electrical meters and only one or two thermal meters – even though electrical /thermal energy use is split 50-50!

What is the value of guesstimation and visualization?

For different sectors within industry and buildings, there are research results available which will give a rough first estimate of the energy breakdown for your sector. So, why not search for results on the web and then apply the percentage breakdown to your site.

Or:

If you are in a very specialized industry, perhaps it is you who is the expert. Perhaps you have a rough idea yourself, from your experience.

Here is a Sankey diagram which shows all energy uses and clearly highlights significant energy uses (it also shows which of these are metered).

sankey diagram enerit

Now, can you visualize it? When you see your breakdown clearly, you can see what energy is “unaccounted” – i.e. you do not know where it is used! For example, I know of a manufacturing operation with long experience of making project-based energy-saving improvements. Only when they did a Sankey-style energy balance did they discover that 30% of their energy was being used in their water treatment plant at the back of their site (and “unaccounted”) – this demonstrates the importance of a top-down analysis of their energy use!

When you visualize, you can also decide which energy streams need extra metering and which ones just need an improved estimate – and depending on the size of the energy flow.

When you visualize, you can motivate your management by showing graphically key areas of energy cost reduction.

Bottom line: Yes – guesstimation will save you time and money. So, make your first guesstimate now, find a way to visualize it, and get focused on key areas for: saving energy now; improving your estimates; and investment in metering!

Paul F. Monaghan, Ph.D., is CEO of Enerit. Paul is a 30-year veteran of energy management throughout North America and Western Europe. As Enerit CEO, he is responsible for setting the strategic direction of Enerit energy software products. Enerit is a global leader in delivery of innovative systematic energy management system (EnMS) software to support Energy Star, ISO 50001, SEP and all EnMS based on the ISO 50001 approach. Enerit EnMS software is complementary to and integrates with monitoring and energy reporting software. Enerit software includes dynamic Sankey diagrams to make it easier to get started with a systematic EnMS approach.