The the Leadership in Energy and Environmental Design (LEED) rating system has high requirement about the building overall comfort, functionality and energy savings.Many architects prefer using high performance triple silver low-E insulating glass on their buildings that meet LEED requirement,the main glass manufacturers worldwide already developed super products ,typically products include:
Vitro Solarban 60, Vitro Solarban 90.
Guardian Sunguard SNX 51/23, SNX62/27
AGC Confort Select 23,Confort Select 23
Cardinal Quad LoĒ-452+, LoĒ³-366
Pilkington Suncool 70/35 Pro T, 50/25 Pro T
SGG Cool Lite Xtreme 60/28
Beside these,China glass manufacturers also has similar products,for example：
Jinjing optecselec 70xl
CSG TT50, TT65
TG PTE58, PTE75
SYP YTE52, YTE70
triple silver low-E coating-applied in USA
After checking these coated glass, all the triple silver low-E has light transmittance about 50% and 70%,and most popular&widely used in coating with 70% light transmittance,typically coated on low iron glass to achieve more clear appearance.
Triple silver low e coating is the newest and best glass coating of human beings and possible to be the last generation energy efficient glass coatings for its ultimate performance.
Triple-silver-low-e-performance-data
Features of triple silver low-E:
- Low SHGC (Solar heat gain coefficient)
The LSG of single silver low e is around 1.4,while double silver one can be over 1.6-2,triple silver low e LSG can reach 2.2 or even more.
Which means that under the same light transmittance, triple one can reach lower SC value and transfer the lighting to cold light,allow much less solar radiation through the glass.
- High light transmittance.
Light transmittance is kept 60-70% while keeping low SHGC,the coating can be applied in everywhere,both high altitude cold areas and low altitude hot areas.
triple silver insulating glass-glass facade project
- Low Glass U value
Insulating glass with triple silver low-E has low thermal conductivity,typical U value for 6-12-6 is 1.6W/M2.K,in addition to more thermal insulation measurement, for example ,argon filing, warm edge spacer,triple glazed units,the glass U value reach 1.0W/m2.k or even less to prevent heat through the glass.
- High processing difficulty.
Compared with traditional coating products,Triple silver low-E coating is made with 13 or even more layers,the extremely low thermal absorb make it difficult to be tempered.The glass is hard to be heating to the required tempering temperature and easy to cause glass flatness problem.
The coating also require very short processing time from unpacking to been made into insulating glass.
These shortage bring difficulty in production and it’s difficult to find a good triple silver low-E glass manufacturer in China.
triple silver low-E coated glass-solarban 70XL-CHINA
Why Leed projects select triple silver low-E insulating glass?
The main reasons for the insulating glass is its best thermal insulation performance.
Below chart shows the air conditioner investment for a 22000 sqm glass facade located in South China:
| Glass | LT % | SC | U value | Cooling load | AC Investment |
|---|---|---|---|---|---|
| 6-12-6 Single Silver Low-E | 67 | 0.65 | 1.96 | 2250.72KW | USD1,380,000 |
| 6-12-6 Double Silver Low-E | 69 | 0.49 | 1.65 | 912.51KW | USD560,000 |
| 6-12-6 Triple Silver Low-E | 67 | 0.38 | 1.65 | 525.93KW | USD323,000 |
With the same light transmittance,the A/C cooling load of triple silver low-E insulating glass is only 23% of single silver low-e, and unit decreased cooling investment is USD49/SQM.
Compared with double silver low-E,the decreased cooling investment is USD 11/SQM.
More comparison：Difference between Single silver low-E,double silver low e and triple silver low e
Even though the initial glass investment is higher,but the saved heating and cooling costs is much more than the glass price difference.
Typically projects that we have been involved in:
- Singapore: Sandbay Marine- 5000sqm.
Solarban 70XL HS + 12A + 8mm Clear float FT with HST
8mm PPG Solarban 70XL HS + 12A + 8mm Clear Float FT with HST
Singarepore Sand bay Marine-glass facade
- Australia:Australian Rugby Development Centre -6000sqm
6mm MT58 on clear HS (#2)+12A+10mm Clear HS
6mm MT58 on clear HS & digital printer white frit(#2)+12A+10mm Clear HS
Australian Rugby Development Centre
- Australia Opal Tower, Sydney -22000sqm.
6mm Triple silver Low-E MT70 on clear HS +12A+6mm clear HS
Opal Tower, Sydney-TRIPLS ISLVER LOW E GLASS
More and more projects worldwide select to use our triple silver low-E projects,our advanced glass coating lines enable us to produce world class glass coatings , Tamglass tempering furnace,Lisec& Bystronic insulating lines support us to produce the best quality insulated glass with far more less costs than other glass processors,contact us now for your next great LEED building,Morn is your best China triple silver low-E manufacturer.
LOW E GLASS PRODUCTION
Download this article here:Triple silver low-E insulating glass in LEED buildings
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