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smart energy in Europe

smart energy in Europe. Heat losses and gains. Termografhy of a building. insulation. Synthetic : expanded polystirene , polyuretane. Natural : wood fiber , cork. Mineral : expanded clay , foamed glass.

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smart energy in Europe

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  1. smart energy in Europe

  2. Heat losses and gains

  3. Termografhy of a building

  4. insulation Synthetic : expandedpolystirene, polyuretane Natural : woodfiber, cork Mineral: expandedclay, foamedglass Remember! 10 cm ofgoodinsulationcorrespondto 40 cm ofwood, 60 cm ofbrick, 710 cm of concrete!

  5. A lot of attention to windows! The eaves on the windowallows in wintertimetogetgainsfromsolarrays and in summertimetogetshadowagaistsunshine

  6. Bioclimatic architecture

  7. INDIRECT SOLAR GAINS Air betweenwindow and wallisheatedbysun and through air pumpis sent inside whilecold air ispicked in the lowest part. In summertime air pumpprovidestoanefficientcirculationforrefreshing Traditional building requires 169 kWh/m2 /year, a bioclimatic building requires 56 kWh/m2/year

  8. Indicationforbetteruseofbuildings. What can you do? 1) Is advisable to reduce the dispersion of heat with the use of double glazing in windows and the insulation of the walls. The energy consumption, in fact, can be reduced by up to 50%. 2) Remember that dark surfaces absorb more solar radiation. 3)Do not use curtains or blinds to shield the windows and glass surfaces on winter days, because the windows provide natural light and allow the heat of the sun to enter (heat storage). 4) Keep doors and windows closed when heating and cooling 5) Add shielding inside buildings (eg Venetian) 6) use plants for shading, et cetera. 7) Do proper use of windows (for the penetration of the sun duringthe winter, shading and night ventilation in summer)

  9. THERMICAL COMFORT Thermical comfort: balanceismaintainedbetweenhumans and the environment and the heatproducedbyhuman body isremovedby the body itself . Temperature shouldbeomogeneousaround 18-22°C and humidity: 30-60% LOCAL AIR STREAM IN WINTER HEATING COMING FROM LOCAL RADIATION NOT OMOGENOEUS VERTICAL TEMPERATURE FLOOR TEMPERATUTE TOO HOT

  10. thermal energy sources Petrolproducts Heatingpump electricity pellets Solarsystems wood

  11. Thermal energy distribution Radiantstrips radiator Radiating source fan Floorheating Wallheating

  12. conditioning EER A 3.20 < EER B 3.20 ≥ EER > 3.00 C 3.00 ≥ EER > 2.80 D 2.80 ≥ EER > 2.60 E 2.60 ≥ EER > 2.40 F 2.40 ≥ EER > 2.20 G 2.20 ≥ EER

  13. Suggestions … • Avoid using air conditioning when possible • A fan can provide the same level of comfort • Avoid unnecessary heat fluxes • Curtains are excellent tools to prevent heat entrance in summer • Choose a level of comfort between 22-25°C (every degree below means 8% more energy) • Keep doors ans windows closed • Provide good insulation • If air conditioning has movable louvers, turn them to the ceiling (cold air goes down) • Look carefully the class energy • The condenser has to be located outside in a well ventilated area

  14. Now practice …. • Calculateenergyclassofyour home! • Checkyourfuelconsumptionduringwintertime • Transformeyourfuleconsumption in kWh • Howmany m2is the surfaceofyour house? • Compare yourconsumption and checkenergyclassofyour home

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