TECHNICAL PRESENTATION ON GLASS NBCC- 18 MARCH 2017
LIGHT SPECTRUM
PARAMETERS OF GLASS Sunlight Visible Rays Internal light reflection External light reflection Light Transmitted VLT 3 / Presentation title
PARAMETERS OF GLASS 2# 1# reflected energy directly transmitted energy re-emitted re-emitted energy energy SHGC/ SF 4 / Presentation title
PARAMETERS OF GLASS Total Indirect heat gain = Area = 1 m 2 (U Value) X (Temperature difference) X (Area) T 1 = 1 o C T 2 = 0 o C U Value 5 / Presentation title
HEAT GAIN THROUGH GLASS Total Heat Gain Heat gain due to direct Amount of heat transferred solar radiation = due to temperature difference = ΔT x U -Value Incident Solar Energy x SHGC SHGC U-Value 6 / Presentation title
CASE STUDY SF / SHGC /’g’: 0.85 354 Assuming Clear Glass 400 W/sqm Solar In SGU 46 U Value: 5.7 W/sqm K incident energy = SF / SHGC /’g’: 0.40 166 415 W/Sq. m 212 W/sqm Solar Control & 46 U Value: 5.7 W/sqm K Temperature differential SF / SHGC /’g’: 0.25 104 Solar control = 8º C 117 W/sqm + 13 Low-e U Value: 1.6 W/sqm K Solar Factor contributes to over 75% of Heat Gain!!! 7 / Codes and standards
COATING TECHNOLOGY Coating takes place at the end of tin bath or right after tin bath. Process of manufacturing known as pyrolysis (CVD). Operating temperature of glass is 600- 650 Degrees. Thermal energy of hot glass is used to set off reaction between glass and deposited material. Manufactured in a separate process (offline) by Magnetron sputtering on to raw glass. Process of manufacturing is known as Physical Vapor Deposition. Selective coatings are done on glass in over 25 vacuum chambers which impart solar control, low emissivity or other properties to the glass. Operating temperature of glass is less than 100 Degrees. 8 / Presentation title
ONLINE VS OFFLINE • • Much lower variety of products High variety of products • Only 2 layers of coating • Up to 25 layers of Nano coating • • Low Spectral selectivity High Spectral selectivity • • Lesser aesthetic appeal Better aesthetic appeal • • Limited options in color More flexible options in color • • Equally durable Equally durable • No customization • Can be customized • • Basic solar control High performance/ Low- emissivity glasses • • Don’t fit green building requirements Green building requirements Light Spectral Characteristics Solar Factor U - Value Transmission Selectivity Online Coated 30% 46% 0.65 2.8W/Sq.m K Offline Coated 40% 23% 1.73 1.6W/Sq.m K 9 / Presentation title
SG PRODUCT RANGE • Reflectasol 1G • Antelio Plus 2G Spectral selectivity • Cool Lite • Evolite 3G • Evo • Planitherm 4G • Nano / Nano silver • Envision 5G • Exprostar • Xtreme 6G 10 / Presentation title
SG PRODUCT RANGE Glass Series For Building Type Available Shades Applications Antelio Residential - Windows, Retail, Neutral / Blue / Green SGU /DGU Solar Control glasses for small & medium Neutral / Blue / Green / Cool lite sized Buildings Silver SGU /DGU Hotel windows & Buildings in colder regions Planitherm with soothing appearance Neutral / Blue / Green DGU Evo lite Green Homes Neutral / Blue / Green SGU /DGU Buildings requirements with SGU of High Evo performance Neutral / Blue / Green SGU /DGU Nano Green Buildings /Energy Efficient Buildings Neutral / Blue / Green DGU Green Buildings /Energy Efficient Buildings for Nano Silver Leed Ratings /Uniform fasad Neutral / Blue / Green DGU Large - Energy Efficient Buildings / Platinum Rated -IT/Ultra Modern Hotels /Airports / Tall Envision Commercial Buildings / High End Villas Neutral / Blue / Green DGU 11 / Presentation title
Products Solutions . Project Care . Project Management Solutions, assuring Infinity range of products you the best quality every time . High performance glass from the house of Saint-Gobain Infinity Design ACE . Glazing innovations Gain consultancy from glazing experts on your design. Peek into the future today, through . SAGE Glass and other future innovations Research solutions Custom solutions, so that you get all solutions to your requirements 12 / Presentation title
HEAT TREATMENT Glass has an excellent Compressive strength (1000 N/mm2), but is brittle owing to its low Tensile Strength (40 N/mm2) THERMAL TEMPERING tension compression 0 t 0.21 t center tension surface compression (defines break pattern) (defines strength) parabolic internal stress profile Heat treatment of glass is done to increase the stresses, which in-turn increases the tensile strength of glass 13 / Presentation title
BASIC HEAT TREATMENTS loading heating quenching & cooling FT HS 14 / Presentation title
PROPERTIES OF GLASS HEAT TREATED GLASSES Characteristics Annealed Glass Heat Strengthened glass Tempered Glass Tensile Strength 40N/Sqm 75N/Sqmm 120N/Sqm Thermal Stress 50˚C 130˚C 200˚C Safety Glass No No Yes Breakage Pattern Sharp large pieces Sharp large pieces Small Pieces 15 / Presentation title
DESIGN ACE Building Orientation Analysis Site Shadow Analysis Sun Path Analysis How does the shadow of a How does the Sun travel vary across How does direction of the a day or a year? building travel? building matter? Daylight Analysis Solar exposure analysis 16 / Presentation title How much heat is going through How much natural light is getting each side of the building? spread indoors?
Acoustic Analysis Wind load design What thickness of glass to be How much sound selected? can glass cut? Code Compliance Structural support analysis Payback Analysis Framed support – Frameless support – Is the glazing system following the Standards and Codes? Is the glazing structurally safe? 17 / Presentation title
CHECKLIST plan 3d model with Archived Material Textures- 3dsmax/revit/sketchup Reference rendered image Plan & Elevation drawings in .dwg format Sectional drawings in .dwg format elevation Glass to be rendered Environment details-Surrounding building images/master plan 18
GLAZING INNOVATIONS Presentation title 20 /
Presenting to you, the cutting edge solution! 21 / Titre présentation
WEATHER IS DYNAMIC … LET YOUR BUILDING ENVELOPE ADAPT IN A SMART WAY! 22 / Introducing SageGlass
EVOLVE Heat Work from Ingress: inside the 3.3 times building less Space Renovation Cooling with Load: minimum 37% disturbance reduction Comfort Operational area payback ≈ always 6.5 years ≥84% Presentation title 23 /
ONSITE DGU RETROFITTING: ADVANTAGES RETROFITTING SOLUTIONS for energy efficiency with the following benefits: (a) Conversion from inside the building (b) Without removal of the existing glass (c) With minimum disturbance to occupants (d) No productivity loss as building remains functional (e) Boost in the energy efficiency of the building (f) Saint Gobain credible vendor on-board (e) Saint Gobain expert supervision for implementation 24 / Onsite Retrofit
THANK YOU
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