PowerPoint Presentation

Building Energy Modeling and Building Envelope DesignProfESSOR ENRICO DE ANGELISKRISTIAN GJOKA ENRICO SALCUNIPOLITECNICO DI MILANOMSC BUILDING ENGINEERINGACADEMIC YEAR 2015/2016

Building description01/40

Boundary Conditions02/40

Boundary Conditions02/40

Boundary Conditions02/40

Boundary Conditions02/40

Boundary Conditions02/40

Boundary Conditions02/40

Boundary Conditions02/40

Boundary Conditions02/40

Boundary Conditions

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Boundary Conditions

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Boundary Conditions

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Assumptions on adjacent zones

MonthDifference of MonthlyAverage TemperatureJANUARY0.51%FEBRUARY0.09%MARCH0.03%APRIL0.12%MAY0.10%JUNE0.10%JULY0.11%AUGUST0.12%SEPTEMBER0.18%OCTOBER0.15%NOVEMBER0.31%DECEMBER0.33%

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Assumptions on wingwall height

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SchedulingMonday - Friday08:00 - 18:0005/40

Glazing systemVentilation1 vol/h during business hours, otherwise

Baseline ModelSlab massMassless layers, except for tiles and plasterboard

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Spandrel vs. Glazing07/40

Optimizations:Glazing System (double/triple glazing, different coatings)Ratio of opaque to transparent areaShading System (venetians, overhang)Thermal inertia (massless/massive slabs)Night time ventilation (2-5-10 vol/h)08/40

GLAZINGDEGREE HOURSYEARLY ENERGY DEMAND09/40

GLAZING LOW-E10/40TEMPERATURE DISTRIBUTION

11/40AVERAGE DAY - JANUARYGLAZING LOW-E

AVERAGE DAY - AUGUST12/40GLAZING LOW-E

13/40TEMPERATURE DISTRIBUTIONGLAZING SELECTIVE

GLAZING SELECTIVE13/40TEMPERATURE DISTRIBUTION

14/40AVERAGE DAY - JANUARYGLAZING SELECTIVE

15/40AVERAGE DAY - AUGUSTGLAZING SELECTIVE

16/40TEMPERATURE DISTRIBUTIONGLAZING SELECTIVE + LOW-E

16/40TEMPERATURE DISTRIBUTIONGLAZING SELECTIVE + LOW-E

17/40DEGREE HOURSGLAZING SELECTIVE809813770

17/40DEGREE HOURSGLAZING SELECTIVE85451041124%5%

DEGREE HOURSYEARLY ENERGY DEMAND18/40SHADING

19/40TEMPERATURE DISTRIBUTIONSHADING OVERHANGS

20/40TEMPERATURE DISTRIBUTIONSHADING VENETIANS

21/40AVERAGE DAY - JANUARYSHADING OVERHANGS

22/40AVERAGE DAY - JANUARYSHADING VENETIANS

23/40AVERAGE DAY - AUGUSTSHADING OVERHANGS

24/40AVERAGE DAY - AUGUSTSHADING VENETIANS

25/40DEGREE HOURSSHADING VENETIANS

25/40DEGREE HOURS9938762645%23%SHADING VENETIANS

MASS AND VENTILATIONDEGREE HOURSYEARLY ENERGY DEMAND26/40

27/40TEMPERATURE DISTRIBUTIONVENTILATION

28/40AVERAGE DAY - AUGUSTVENTILATION

29/40TEMPERATURE DISTRIBUTIONMASSIVE SLAB

30/40AVERAGE DAY - AUGUSTMASSIVE SLAB

31/40AVERAGE DAY - JANUARYMASSIVE SLAB

32/40DEGREE HOURSMASSIVE SLAB

32/40DEGREE HOURSMASSIVE SLAB8694822740%7%

33/40THERMAL INERTIA VS INSULATIONMASSIVE SLAB

34/40THERMAL INERTIA VS INSULATIONVENTILATION8090135302%0%

35/40THERMAL INERTIA VS INSULATIONMASSIVE SLAB + VENTILATION8715539061%8%

MASS + VENT.MASS + VENT. + SEL.LETS SUMMARISE!BASELINEGLAZINGAREA 2/3SHADINGMASSVENTILATIONLOW-ESELECTIVEVENETIANSOVERHANGSLIGHT MASS2 VOL/h5 VOL/h10 VOL/hLOW-E + SELECTIVEAREA 2/3SELECTIVEVENETIANSMASSIVE SLAB10 VOL/hMASS + VENT. + SEL.+VENETIANS36/40

DEGREE HOURSYEARLY ENERGY DEMAND37/40COMBINATION STRATEGIES

38/40TEMPERATURE DISTRIBUTIONFINAL STRATEGY

39/40THERMAL INERTIA VS INSULATIONFINAL STRATEGY8320149689%3%

THANKS FOR YOUR ATTENTIONKRISTIAN GJOKA ENRICO SALCUNI40/40