Energy Performance Indicators En Pi

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Un estratto da una presentazione ad un corso aziendale sulla definizione ed uso degli EnPI

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Energy Performance Indicators En Pi

  1. 1. estrattoEnergy Performance Indicator • A kind of Key Performance Indicator • Measure of performance of a company process (energy) • General indicator • Quality indicator • Cost indicator • Service indicator • Time indicatorfurther information: http://www.kpilibrary.com/ daniele.sogni@progepiter.it www.progepiter.it
  2. 2. Energy Performance Indicator 3.13 - 4.4.5 Energy performance indicators • periodic check of energy consumption (energy costs are NOT generic costs but they must be monitored and checked) • analysis about variables of energy uses (16001 energy factors)EnPI • check present uses & consumptions • calculate future consumptions • estimate consumptions (savings) of design/procurement • check achievement of objectives/targets daniele.sogni@progepiter.it www.progepiter.it
  3. 3. Energy Performance IndicatorWhy indicators?EnMS is a section of MS so:• it’s important to check global performance• same methodology about documents, records, review, etc.• it’s based on data, informations, measures, etc.So indicators are needed! daniele.sogni@progepiter.it www.progepiter.it
  4. 4. Energy use CONTROLLED BY PRODUCTION CONTROLLED BY PHYSICAL PROCESSES PROCESSES • Irregular and complex relationship• Regular relationship between between use and variable(s) use and variable(s) • Complex definition of energy use/variable(s)• Simply definition of energy use • More important variables such as• Simply definition of energy production intensity, failures, variable(s) start/stop steps, human control• Past & present energy data easy • Past and present energy data to find o calculate (generally) complex to find o calculate (required monitoring) daniele.sogni@progepiter.it www.progepiter.it
  5. 5. Energy use/variable relationship E = f (X, Y, Z) + jwhereE = energy consumption, either electricity, nonelectric energy, ortotal site energy (TSE, the total measure of fuel, thermal and electricity)Y = production, measured by physical productionX = systematic economic decision variables (i.e., labor hoursworked, materials processed, plant capacity, or utilization rates)Z = systematic external factors (i.e., heating and cooling DD)j = error daniele.sogni@progepiter.it www.progepiter.it
  6. 6. Energy use/variable relationship daniele.sogni@progepiter.it www.progepiter.it
  7. 7. Energy use/variable relationship Macchina 1 30.000 6.000 25.000 5.000 20.000 4.000 n. colliKWhe 15.000 3.000 10.000 2.000 5.000 1.000 0 0 2008/01 2008/03 2008/05 2008/07 2008/09 2008/11 2009/01 2009/03 2009/05 2009/07 2009/10 2009/12 M1 n. colli daniele.sogni@progepiter.it www.progepiter.it
  8. 8. Calculation of EnPISimple ratio 1 information daniele.sogni@progepiter.it www.progepiter.it
  9. 9. Calculation of EnPIStraight-line modelEach consumption stream couldhave a target performancecharacteristic.Organisation needs to answer thisquestion:“How much energy have we used,compared with what we wouldhave expected in the absence ofenergy-saving measures?” daniele.sogni@progepiter.it www.progepiter.it
  10. 10. estrattoEvaluation of EnPIPlease verify your EnPI! daniele.sogni@progepiter.it www.progepiter.it

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