GLASS NBCC- 18 MARCH 2017 LIGHT SPECTRUM PARAMETERS OF GLASS - - PowerPoint PPT Presentation

TECHNICAL PRESENTATION ON GLASS

NBCC- 18 MARCH 2017

LIGHT SPECTRUM

PARAMETERS OF GLASS

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Light Transmitted

Sunlight Visible Rays

Internal light reflection External light reflection

VLT

PARAMETERS OF GLASS

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1# 2#

reflected energy re-emitted energy directly transmitted energy re-emitted energy

SHGC/ SF

PARAMETERS OF GLASS

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Area = 1 m2

T1 = 1oC T2 = 0oC Total Indirect heat gain = (U Value) X (Temperature difference) X (Area)

U Value

HEAT GAIN THROUGH GLASS

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Total Heat Gain

Amount of heat transferred due to temperature difference = ΔT x U-Value Heat gain due to direct solar radiation = Incident Solar Energy x SHGC

SHGC U-Value

CASE STUDY

Codes and standards 7 /

Assuming Solar incident energy = 415 W/Sq. m & Temperature differential = 8º C

Clear Glass In SGU SF / SHGC /’g’: 0.85 U Value: 5.7 W/sqm K

400 W/sqm

354 46 Solar Control

SF / SHGC /’g’: 0.40

U Value: 5.7 W/sqm K

212 W/sqm

166 46 Solar control + Low-e

SF / SHGC /’g’: 0.25

U Value: 1.6 W/sqm K

117 W/sqm

104 13

Solar Factor contributes to over 75% of Heat Gain!!!

COATING TECHNOLOGY

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• 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
• ver 25 vacuum chambers which impart

solar control, low emissivity or other properties to the glass.

• Operating temperature of glass is less

than 100 Degrees.

• Coating takes place at the end of tin

bath or right after tin bath.

• Process
• f

manufacturing known as pyrolysis (CVD).

• Operating temperature of glass is 600-

650 Degrees.

• Thermal energy of hot glass is used to

set

• ff

reaction between glass and deposited material.

ONLINE VS OFFLINE

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• High variety of products
• Up to 25 layers of Nano coating
• High Spectral selectivity
• Better aesthetic appeal
• More flexible options in color
• Equally durable
• Can be customized
• High performance/ Low- emissivity glasses
• Green building requirements
• Much lower variety of products
• Only 2 layers of coating
• Low Spectral selectivity
• Lesser aesthetic appeal
• Limited options in color
• Equally durable
• No customization
• Basic solar control
• Don’t fit green building requirements

Characteristics Light Transmission Solar Factor Spectral Selectivity U - Value Online Coated 30% 46% 0.65 2.8W/Sq.m K Offline Coated 40% 23% 1.73 1.6W/Sq.m K

SG PRODUCT RANGE

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1G

• Reflectasol

2G

• Antelio Plus
• Cool Lite

3G

• Evolite
• Evo

4G

• Planitherm
• Nano / Nano silver

5G

• Envision
• Exprostar

6G

• Xtreme

Spectral selectivity

SG PRODUCT RANGE

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Glass Series For Building Type Available Shades Applications Antelio

Residential - Windows, Retail, Neutral / Blue / Green SGU /DGU

Cool lite

Solar Control glasses for small & medium sized Buildings Neutral / Blue / Green / Silver SGU /DGU

Planitherm

Hotel windows & Buildings in colder regions with soothing appearance Neutral / Blue / Green DGU

Evo lite

Green Homes Neutral / Blue / Green SGU /DGU

Evo

Buildings requirements with SGU of High performance Neutral / Blue / Green SGU /DGU

Nano

Green Buildings /Energy Efficient Buildings Neutral / Blue / Green DGU

Nano Silver

Green Buildings /Energy Efficient Buildings for Leed Ratings /Uniform fasad Neutral / Blue / Green DGU

Envision

Large - Energy Efficient Buildings / Platinum Rated -IT/Ultra Modern Hotels /Airports / Tall Commercial Buildings / High End Villas Neutral / Blue / Green DGU

12 / Presentation title

Infinity range of products

High performance glass from the house of Saint-Gobain Infinity

Glazing innovations

Peek into the future today, through SAGE Glass and

• ther

future innovations

Project Care

Project Management Solutions, assuring you the best quality every time

Research solutions

Gain consultancy from glazing experts on your design.

Design ACE

Custom solutions, so that you get all solutions to your requirements

. . . . .

Products Solutions

HEAT TREATMENT

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Glass has an excellent Compressive strength (1000 N/mm2), but is brittle owing to its low Tensile Strength (40 N/mm2)

THERMAL TEMPERING

compression tension

t

0.21 t

surface compression center tension

(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

BASIC HEAT TREATMENTS

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loading heating quenching & cooling

FT HS

PROPERTIES OF GLASS

HEAT TREATED GLASSES

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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

DESIGN ACE

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Sun Path Analysis Building Orientation Analysis Site Shadow Analysis Solar exposure analysis Daylight Analysis

How does direction of the building matter? How does the Sun travel vary across a day or a year? How much heat is going through each side of the building? How does the shadow of a building travel? How much natural light is getting spread indoors?

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Payback Analysis Code Compliance Acoustic Analysis Structural support analysis

– Framed support – Frameless support

Wind load design

How much sound can glass cut? What thickness of glass to be selected? Is the glazing system following the Standards and Codes? Is the glazing structurally safe?

CHECKLIST

18

Reference rendered image Plan & Elevation drawings in .dwg format Sectional drawings in .dwg format Glass to be rendered Environment details-Surrounding building images/master plan

plan elevation

3d model with Archived Material Textures- 3dsmax/revit/sketchup

GLAZING INNOVATIONS

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Titre présentation 21 /

Presenting to you, the cutting edge solution!

Introducing SageGlass 22 /

WEATHER IS DYNAMIC…

LET YOUR BUILDING ENVELOPE ADAPT IN A SMART WAY!

EVOLVE

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Heat Ingress: 3.3 times less Work from inside the building Space Cooling Load: 37% reduction Renovation with minimum disturbance

Operational

payback≈ 6.5 years Comfort area always ≥84%

ONSITE DGU RETROFITTING: ADVANTAGES

Onsite Retrofit 24 /

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

THANK YOU