Clear glass u value. 87 is the nominal SHGC of a clear glass.

Clear glass u value 40 1. ft . g. 38mm: 3660mm x 2760mm: ComfortPlus¹ Clear: 8. 1 3 2. 47 1. 00. The lower the number the better the glass. 24 0. 5. 060" clear PVB + 1/4" clear glass) Clear Glass 77 49 15 11 0. All performance data is calculated using LBNL Window 7. 3 software and represents center of glass performance data. Laminated glass is a safety glass product and can be used in insulating (double U-Value2 (Imperial) K-Value2 (Metric) Shading Coeffi-cient3 Solar Heat Gain Coeffi-cient4 Insulating Glass Unit*1 (1/4" outdoor lite as noted below + 1/2" airspace + 1/4" • clear glass + 0. The more similar the U-value of a unit’s components, the more similar the U-value of the finished product will be. Thus an additional benefit of using Low-E glass is that it permits a higher relative humidity in a room before condensation will occur. 0mm. 45 GLASS: Guardian Clear Glass (Middle East & Africa) Glass, 6mm (2-SunGuard® DS Grey T (Middle East & Africa)) GAP: 100% Air 12. The Neutral component identifies the coating hue and is available on Clear and Grey float glass. Total System SHGC range. 5 85 8 8 64 6 <1 5. 340" in addition to a standard pane of 0. Winter night U-Value. Apr 4, 2018 · The lower the G-value, the less the conservatory will overheat during the summer months. 02 while a 1” (25mm) insulating glass unit made with clear glass and with no coatings of any kind has an approximate winter nighttime U-Value 0f . 7 Clear Radiance Clear 47 22 14 35 0. Generally, the lower the emissivity the better the center of glass U‐value will be as more thermal radiation is reflected away. 56 Values are center of glass calculated using LBNL Window 7 per NFRC100 conditions. So ComfortPlus™ is a better insulating product than 3mm clear float glass. 10). 5 Exterior tint may vary from unit to unit. The building design & the local weather conditions meant that you can relax the glass values & still be energy efficient. 92 • Shading Coefficient: 0. 74 6% UV Tdw-ISO 0. 81 5. Superior Insulating Performance. Summer day U-value. Oct 3, 2022 · An insulating glass unit comprising 4 mm Pilkington Optifloat™ Clear outer pane, 16 mm argon gas-filled cavity and 4 mm Pilkington K Glass™ S inner pane has a centre pane U value of 1. 840 0. 77 5. 55 Visible Light 72% U-Value 0. 76 Visible Light 81% 59% UV Tdw-ISO 0. Summer daytime U-value and winter nighttime U-value are two common derivatives Effective U-value calculator. 8 Guardian UltraClear® Low-Iron Glass. 7 Clear Brook Plus Clear 33 39 21 22 0. The SHGC measures how much of the sun’s heat comes through the window. 75 (75%) whereas replacing the outer sheet with Pilkington Perfect Day Super-Blue brings the G-value down to 0. Calculating u value of glass is simple. 55 nighttime U-value. Enter a keyword for product or colour such as "eclipse". How are U Values Calculated? Once you are familiar with what is u value, the second question arises about how u values are calculated. 2; a lower value equates to less heat flow. It is considered by the U. 800 Park Drive , Owatonna , MN 55060 US | (800) 533-2080 What is a U Value? U Value is A measure of air-to-air heat transmittance (loss or gain) due to thermal conductance and the difference in indoor and outdoor temperatures. U Value: the total heat transfer out of a window (Btu/hr-sq ft-F or W/sq m- C). Substrate It’s important to note, that these values are “whole window values”, not glass alone. These values are available for all Vantage aluminum windows and aluminium door products as part of their WERS rating. Solarban ® 60 Starphire ® glass allows ultra-clear glass to be used for vision glass, skylights, atriums, storefronts and entryways without sacrificing energy Allows high level of visible light transmittance and exterior clear glass appearance: U-Value: 0. S. 94 0. 32 1. Comment. 6W/m²K or Window Energy Rating = Band C: Doors with more than 50% of their internal face area glazed: 1. 24: Insulates 50% better than a standard clear insulating glass unit : Ultraviolet Energy: 59%: 8%: Reduces fabric-fading UV energy three times more effectively than clear glass : Damage Weighted Transmittance * 0. U-Factor Describes the resistance of the door glass to conducting heat and cold through the unit. U-value can be thought of as the opposite of R-value. technology, Solarban® 90 glass is engineered to outperform Solarban® 70 glass, the most preferred high-performance solar control low-e glass in North America. Refl. Sealed Unit Width U-values Example Specification (Click below to view PDF) 24mm: 1. 12 8. To calculate U-value, divide 1 by the R-value—a 3. 89. Emirates Float Glass-Product range offers Architects & Customers a wide choice to meet varying performance criteria distinct aesthetic appeal. Solar Performance of Glass When the solar spectrum (sunlight) strikes glass, one of three things occurs, it is either reflected Viracon's solar and optical performance data is center of glass data based on the National Fenestration Rating Council measurement standards, calculated using Lawrence Berkeley National Laboratory's (LBNL) WINDOW 7 software. Misunderstanding 2: The thicker spacer of insulated glass, the better energy efficient performance. 61 2. 030, we get an R-Value for the window of 3. Out Refl. 20. The Center-of-glass U-value is a measurement of ONLY one location on the glass. It is expressed as Watts per square meter Kelvin W/m2 K. 36. 6 Clear Priva Clear 30 31 17 22 0. 41 0. The U-value will be the same for that glass regardless of the window the glass is in. U-Value – A measure of the insulating characteristics of the glass or how much heat gain or loss occurs through the glass due to the difference between indoor and outdoor temperatures and is measured Btu/ hr•ft2 CLEAR Glass 1/83 7390 83 9 8 1. K) A measure of the air-to-air heat transfer due to thermal conductance and the difference in indoor and outdoor temperatures. 9 Shading coefficient – the ratio of solar heat gain through the glass relative to that through 3mm clear glass. 7 Clear Comfort Clear 30 25 14 24 0. 86 1. Nov 14, 2017 · The quick response is as follows: ¼” (6mm) laminated glass has an approximate winter nighttime U-Value of 1. Low-e 4th Surface Technology allows double-glazed insulating glass units to achieve 12% better thermal performance than clear glass triple-pane Mar 17, 2005 · Vinyl window u values range from . 025 Btu/hr·ft²·F. 030 PVB UPG Tempered Glass is certified by the Safety Glazing Certification Council (SGCC) conforming to 16 CFR 1201 & ANSI Z97. F) For U-Values as low as 1. SHGC (Solar Heat Gain Coefficient) Within ∓ 10% ≤ to SHGC: Shading Coefficient. Each pane of glass is typically 0. The South African National standard SANS 1263 Part 1:2013 Oct 31, 2024 · To calculate R-value, divide 1 by the U-value figure. Glass Type. 80 1/4" Clear laminated - . Outdoor Lite: Clear (transparent) Float Glass, Sputter Coated on second surface (2) Indoor Lite: Clear (transparent) Float Glass. Solar Heat Gain Coefficient Insulated glass is widely used in curtain wall,glass wall ,high rise buildings. 56W/m2. Primary Flat Glass, ASTM U-Value % % % % W/m2K 6 mm Solar Control Low-E Glass – 12 mm Air Gap – 6 mm Clear Glass Clear Lite Plus Clear 54 15 11 38 0. 9 5mm 88 8 8 0. 3 3. The U-value is the overall heat-transfer coefficient; a numerical expressio and center of glass U‐values for various Vitro glass products. 47 0. Argon ThermoTech™ Clear Therefore, R-Value multiplied by U-Value always equals 1. 48 SHGC 0. 38mm: 5100mm VIRIDIAN GLASS GUIDE™: GLASS PERFORMANCE - SINGLE GLAZING Product Name Nominal Thickness Visible Solar UV Trans U Value SHGC Weight kg/m2 Selectivity Trans. 0 W/m²K. Glass SHGC depends on type of tint, tinted glass thickness and on cavity width. 4. See how these sample configurations can help you achieve real R- and U-value improvements. 75 0. Heat strengthening increases the strength of Here, 0. 26 1. U-values typically vary from 0. 5 1. 54 0. 6 15mm 83 6 for center of glass, edge of glass and frame performance. 65 2. 88 1. 78 20. For example, 4mm clear float glass has a U value of 5. Remarkably Clear. 1 (very little heat loss) to 1. NFRC U-factor ratings, however, represent the entire window performance, including frame and spacer material. 2W/ m 2 °C, on a winter’s night when it is 15°C colder outside compared with indoors, the heat loss through the windows would be: U-factor is the rate at which a window, door, or skylight transmits non-solar heat flow. 67 1. 75 5. without edge effects, and expresses the steady-state density of heat transfer rate per temperature 8 U Value – measurement unit is watts per m2 per degree celcius (W/m2ºC) and is a measure of the rate of heat gain or loss through glazing due to environmental differences between outdoor and indoor air. 045. 40, depending on the manufacturer, the type of glazing (low E or clear glass) and the type of spacer between the glass. • For multi cavity and low-E combinations please contact Customer Services. What is U-Value? U-value, or U-factor, is a score given to a surface based on how quickly it allows heat to pass through it. Allows high level of visible light transmittance and exterior clear glass appearance: U-Value: 0. 7 mm Sealed Unit, Insulation Within Frames, 90% Argon For U-Values as low as 1. 5 0. 346 W/m²·K. If we do our reciprocal calculation using a U-Value of . 38mm: 5100mm x 3210mm: ComfortPlus¹ Clear: 10. In layman’s language, the lower u value, the better the thermal performance of the glass. Impact-rated IG's will have a pane of glass that is approximately 0. 7 2. 33 1. However, sometimes a centre-of-glass U Value is given, which simply measures the performance of the glazing alone. Replace windows with rusted or rotten frames with frameless glass block windows – Glass blocks are durable, offer high privacy, vastly improve security and can be mortared into masonry foundations or Title: Lexan™ MR10, 9034, Grey, and Bronze Polycarbonate Sheet Information Description: Code Compliance, Abrasion Resistance Comparison, U-value, Sound Transmission, Light and Energy Transmittance, Weight, Cold Bending Radii, Shading Coefficient, and Coefficient of Thermal Expansion Published: 3/31/2009 Last Edited: 1/5/2023 Center of Glass U-Value (BTU/hr/ft²/°F) Comfort UV Trans. ComfortPlus™ products offer improved thermal and sound insulation in a single laminate with a selection of colours, daylight transmission and solar control. U-Value % % % % W/m2K 6 mm Solar Control Low E Glass - 12 mm (Air Gap) - 6 mm Clear Essence (Low E Glass) Clearlite Plus Clear LC 54/37 52 15 12 36 0. 65 Solar Heat Gain Coefficient 0. 6. 77; Insulated Glass Units of 6mm/12 Argon/6mm glass with a Low-E coating: U value of 1. 2 - 3. GLASS SIZES AND OPTIMIZED U-VALUES U-VALUE U-VALUE METRIC IMPERIAL GLASS TYPE 2SPACER 2 (W/m . The lower the value, the greater is the insulating value. This performance data is not a commitment for Cardinal to produce. 29. 8 °C for summer condition U-value) are fixed for a standard summer daytime condition. 74 25. 7 0. However, the solar control properties of the coating will still U-Value. A higher R-value indicates better insulating properties of U-Factor and the Solar Heat Gain Coefficient (SGHC). Selectivity – Glass selectivity is an index that reports the relationship between visible light transmission (VLT) and solar heat gain (SHGC). For example, a U-value of 0. . 929 Btu/hr·ft²·F. 87. It is expressed as Watts per square metre Kelvin W/m2 K. Calculation method’, and gives some guidance by evaluating the balance of heat loss and useful heat gain by solar radiation entering the building through the glazing. 3333. 2 and 1. Shading coefficient is a relative scale in comparison with a clear glass. 72 - 0. 91 • Shading Coefficient: 0. 49 U value). Light to Solar Gain. An insulating glass unit comprising 4 mm Pilkington Optifloat™ Clear outer pane, 16 mm argon gas-filled cavity and 4 mm Pilkington Optitherm The winter nighttime U-Value (insulating value) of a Solarban® 90 (2) glass unit is 50% better than standard clear insulating glass. 72 5. 74 20% UV Tdw-ISO 0. Visible Light Transmission 88. 73 (Double Glazed) Table of U-Values The following table gives centre pane U-Values for the constructions and cavities as shown 6 8 10 12 14 16 18 20 Clear Clear Air 3. 1. 65 Clearvision Clear LC 39/29 36 24 11 28 0. 8 6mm 88 7 7 0. Low-E glass offers several distinct advantages for your Melbourne home. 3. Materials with very different U-values that are used to make a unit like a window can reduce the unit’s overall ability to stop the transfer of heat. 8 2. ，with more low-E coatings and glass overall thickness,as well as Argon ,U value of triple glazed units can achieve 0. Clear. Framing, cladding, frame type and other items will affect the overall thermal values of a complete window. 2 W/m 2 K. • Lower U-values mean higher performance • Reduces furnace heat loss •Helps reduce heating energy costs Solarban® 90 glass is a low-e glass featuring proprietary multi-silver solar control coating Legend: 1-Clear float, 2 – Bronze Tint, 3 – Grey tinted, 4- Green tinted, 5- Clear Reflective, 6- Bronze Reflective, 7- Grey Reflective, 8- Green Feflectiv. 7 Clear Vision Plus Clear 39 23 13 29 0. ) Uncoated glass is assumed to have a normal emissivity of 0. SHGC GLASS: Guardian Clear Glass (Middle East & Africa) Glass, 4mm. Because Low-E glass improves (lowers) the IG unit U-Value, using Low-E glass will increase the unit’s interior glass surface temperature. U-Value = 2. The virtually inseparable thermochemical bond between the PVB interlayer and glass causes the glass to adhere to the PVB interlayer, holding the glass sheets together. As the U-value decreases, so does the amount of heat that is transferred through the glazing material. Guardian UltraClear® low-iron glass can help bring the wow factor to your next architectural project. Determination of energy balance value. The lower the U-Value, the better the window acts as a heat insulator. 78 15. 5% better (triple) than standard clear insulating glass: Ultraviolet Energy: 58%: 4%: 4%: Blocks 94% of UV energy, a common contributor to fabrics, carpet and furniture fading Type: Solar Control Low-E Clear Insulating Glass “Solarban®” 90 (2) Clear + Clear by Vitro Architectural Glass. range. Two 4mm sheets of basic clear glass might have a G-value of 0. 8W/m²K: 1. 82 5. Glass description. 7 12mm 84 7 7 0. 70 1. 326 W/m²·K. 0476. This calculator is based upon EN ISO 14438:2002, ‘Glass in building. 40 Note: Tdw-ISO represents potential fading damage caused by both UV and visible light. 73 30. 65 GLASS: Guardian Clear Glass (Asia Pacific) Glass, 1/8" (3mm) Winter night U-Value. The spandrel color does not impact U-Value. 9 4mm 89 8 8 0. 24 SHGC 0. 12 Note: Tdw-ISO represents potential fading damage caused by both UV and visible light. Jan 14, 2017 · The glazing on the glass has its own U-value. 84 5. 45 R-value equals a U-value of 0. So we take our R-Value of 21 and divide one by that number, and we get a U-Value of . 0 W/m²K for a wooden door). 6 and an SHGC of 0. 25 1. Viridian reference SolTech¹ Neutral aligned to Oceania Glass branding. The lower the U-value the better the insulation Jan 24, 2022 · Insulated Glass Units of 6mm/12 Argon/6mm glass: U value of 2. 48 2. 4 and an SHGC of 0. Argon fill is 90% and air fill is 100%. R-VALUE R-value is a measure of heat flow resistance. 4 (40%). 15 12. VFloat™ SuperClear low iron float glass is a specialist ultra clear glass offering the highest possible levels of light transmission and visual clarity. single glass performance values vlt visible light transmission vlr visible light reflectance vlri visible light reflectance shgc u-value colour and type % external % internal % w/m2k clear float 3mm 90 8 8 0. With low-e coatings applied to the #2 and the #4 surfaces of an insulating glazing unit, you can reduce the center-of-glass U-Factor by 21%, compared to a unit with a pyrolytic low-e and a clear lite. 5 VIRIDIAN GLASS GUIDE™: GLASS PERFORMANCE - INSULATED GLAZING Outside Glass Inside Glass Nominal Thickness Visible Solar UV Trans U Value SHGC Weight kg/m2 Selectivity Trans. 910 W/m²·K. Aesthetic Options Solarban Solarban® 60 Solar Control Low-E Glass Solarban® 60 (2) Clear + Clear 70 11 12 0. 76 0. U-values indicate how efficiently an insulated glass unit (IGU) keeps hot or cooled air within. 7. Glass has a low R-value, so by All values are centre of glass. U-values are measured in w/m2K which is the units of watts per square metre per degree Kelvin or in other words the amount of heat loss through a 1 square metre of material for every 2. 125". ENERGY STAR does not consider center-of Solar Control Low-E Glass Standard Clear Insulating Glass Solarban® 60 (2) Insulating Glass U-Value 0. 48: 0. Visible Light Reflection 8. This product is commonly referenced as SolTech¹ Clear or SolTech¹ Grey to reflect the glass substrate. 20 to 1. 760". It’s clear from these configurations that new technologies like VIG and fourth-surface low-e coatings represent the next generation of thermal Apr 28, 2023 · U-values, also known as thermal transmittance values, measure the rate of heat transfer through a building element, such as an Insulated Glass Unit (IGU). 31 U-Value 0. No distractions. 7 was as efficient as a glass with SF of 25 & U-Val – 3. 12 10. ‘R’ stands for resistance. U-Value (Ug, W/m2 K) is the glazing parameter that characterizes the heat transfer through the central part of the glazing, i. 87 is the nominal SHGC of a clear glass. It’s noticeably clearer than standard glass — so what people see is completely up to you. 0. 65 3. 24. In cases where it is desirable to laminate the coating in direct contact with the interlayer material, the U-Value of the glass will be about the same as that of uncoated clear or tinted glass. 1-2009 for safety glazing Applicable Standards: ASTM C1036-06 Std. The U-Values for spandrel glazing are the same as the corresponding vision unit. Less than or equal to. 36 1. Solar Heat Gain Coefficient 0. 750" to 0. 5 87 8 8 71 7 <1 5. 6w/m2. Glass Type Emissivity (low‐e) U‐Value* (air) U‐Value* (argon) Clear 0. 1. U-value (thermal transmittance) U-value is also called U-factor in the NFRC U-Value (COG) W/m2K 3. 31 to . 41 High visible light transmittance, comparable to conventional clear glass: U-Value: 0. Tinted. 8 0. 74 (Double Glazed) 6 mm clear (SB60) / 6 mm Clear 24. 73 0. 26: Insulates 46% better than a standard clear insulating glass unit : Ultraviolet Energy: 58%: 17%: Reduces fabric-fading UV energy three times more effectively than clear glass : Damage Weighted Transmittance * 0. 57 - 0. The u value doesn't change for the different orientations (north, south, etc). 2 The U-value of a window is a measurement of the rate of heat loss indicating how well your windows are keeping valuable heat in. • Lower U-values mean higher performance • Reduces furnace heat loss • Helps reduce heating energy costs U-Value 0. • Argon figures are based on a standard 90% fill. Department of Aug 1, 2023 · The difference between clear and low-iron glass is the greater transparency of the latter, making it more suitable for uses such as frameless glass walls, back-painting, markerboards, UV-bonded display cases, partitions and dividers, and other applications. Glass U-Value depends on cavity width. 8W/m²K (or exempt if fitted into existing door frame) Other doors: 1. The steel rollers imprint a texture in the glass surface. Breathtaking views. U-Value 5. This table compares Vitro Architectural Glass product performance data when assembled in a one-inch (25 mm) insulating glass unit with a ½-inch (13 mm) air space and two ¼-inch (6 mm) lites. 0 U-value) 24mm: 1. It is NOT a measurement of the rest of the window, and does not reflect the thermal efficiency of the frame and other window components. U Value – Measurement rate of heat gain or loss through the glass due to environmental differences between outdoor and indoor air. The resulting U-glass ribbon is cooled and hardened, creating a continuous glass channel of the specified dimensions and surface finish. 5 85 8 8 65 7 <1 5. 6; Advantages of Low-E Glass. 8W/m²K (or exempt if fitted into existing door frame) Aluminium Windows and Doors: U-Value = 1. It is a measure of the solar heat gain referenced to 3 mm clear glass which has the designated value of 1. 41 1. 86 5. 30. 24: 0. This can improve formed into a U-shape. Laminated glass is designed to minimise serious injury to humans that may accidentally collide with glass. 43 A U-Value is a measurement of insulation in general the lower the value the more efficient the window as less fabric heat is lost through the glass or frame. A lower summer daytime U-value indicates better heat-blocking capabilities, crucial for mitigating solar heat gain during hot periods, thereby enhancing air conditioning efficiency. Within ∓ 10% ≤ to Shading: Glass Type. 125" thick, so the air gap for a 1" IG with two panes of glass will be approximately 0. The lower the number, the more effective the insulation. VFloat™ SuperClear has distinctive clarity that is achieved by using sand with much lower iron oxide content in the batch mix when the float glass is manufactured. U value is typically measured in Watts per square metre Kelvin or W/m2K. True transparency. 17 SOLEXIA® Glass 67 32 13 8 0. The most common glass combination is 6-12A-6 with double silver low-E,U value is around 1. 80. Winter and Summer U-Values are the only performance values available for spandrel glazing. 8 8mm 87 7 7 0. For windows, skylights, and glass doors, a U-factor may refer to just the glass or glazing alone. Glass U-Value depends on cavity width and type of coating. 44 1. 39 95 U Value. sg • U-Values are quoted in W/m2/K, rounded down to the nearest 0. Transmittance and reflectance values based on spectrophotometric measurements and energy distribution of solar radiation. Calculated Values are in accordance with NFRC2010 Product Name: Thickness: Stock Size: ComfortPlus¹ Clear: 6. k. When paired with clear glass in a standard one-inch insulating glass unit (IGU), Solarban® 90 glass offers a Solar Heat Gain Coefficient 60 (3)(5) glass is more than 61% better than standard clear insulating glass. 7 10mm 86 7 7 0. 25: Insulates as much as 50% better than standard clear insulating glass: Ultraviolet Energy: 59%: 20%: Blocks 80% of UV energy, a common contributor to fabrics, carpet and furniture fading : Damage Weighted Transmittance * 0. 93 0. e. The glass shall comply with the following performance criteria: U value Solar Heat Gain Coefficient (SHGC) Visible Light Transmission % Glass Only Values Total window Heat Strengthening All glass which requires extra strength and thermal resistance will be heat strengthened. 00 • Summer Daytime U-Value: 0. 64 Clear Radiance Plus Clear LC 49/32 46 20 13 31 0. 2W/m²K: U-Value = 1 The U-Value of glass is the same as the U-Factor. U-VALUE The U-value is the measure of how much heat is transferred through the window. Figure 6 shows the U values for increasing numbers of cavities bounded by 4 mm clear float glass, with each cavity containing a 1% emissivity coating, and based on 16 mm Argon (90%) filled cavities. and the IG unit thermal transmittance (U-Value). The channel is carefully annealed (control-cooled) and cut to the desired length prior to final processing and shipping. High See full list on otm. The U-Factor measures how well the window in-sulates. Solar Heat Gain Co-efficient (SHGC) is the amount of heat from direct sunlight that passes through the glass. 37 Misunderstanding 1:Thicker glass has much better U value than thin glass, laminated glass U value is significantly lower than that of the same thickness glass. 55 0. Light to Is the glazing parameter that characterizes the heat transfer through the central part of the glazing, i. Sungate ThermL™ glass is a low-e coating engineered for use on the interior surface of a typical one-inch insulating glass unit (IGU) that dramatically improves U-values when paired with any Solarban® solar Solarban ® 60 Starphire ® glass can help you achieve your design vision of a glass building with the ultimate in transparency and visual clarity combined with energy efficiency. 82 1/4" Clear UPG Tempered Glass is certified by the Safety Glazing Certification Council (SGCC) conforming to 16 CFR 1201 & ANSI Z97. Coating Density N/A. ComfortPlus™ consists of a range of clear and toned laminated glass options featuring a transparent, durable pyrolytic Low E coating. The lower the U-value the better the thermal performance of the glass. It can range in value GLASS: Guardian Clear Glass (North America) Glass, 1/4" (6mm) Winter night U-Value. Clear 6. 71 0. The U-value of a window is a measurement of the rate of heat loss indicating how well your windows are keeping valuable heat in. 18: Insulates as much as 50% better (double) or 62. Variations and Strategies for Improving U-Value. In Trans. 74: 0. U-factors of windows will generally fall between . 0: 4mm Clear, 16mm Argon, 4mm Planitherm One (1. 34 Relative Heat Gain W/m2 535 427 332 565 414 308 262 U-Value The rating given to a window based on how much heat loss it allows. Bangalore, where glass with SF of 37 & U-Val – 5. Apr 18, 2021 · For example, a glass may be with lower SHGC but higher U-value than another glass. 7 Aug 2, 2012 · Even a standard window with double pane glass will vastly improve performance (a standard clear insulated glass unit has a . The U-value represents the amount of heat that passes through one square meter (m²) of the element when there is a temperature difference of one degree Celsius (°C) between the interior and exterior environments. The lower the U-Factor, the better the window insulates. 43 Visible Light 63% U-Value 0. 47. 0W/m²K: U-Value = 1. 25 SHGC 0. Now, in the above-noted code requirements, we had a window U-value requirement of 0. Primary Flat Glass, ASTM Note: Measurement of improved U-values are calculated using a baseline of a Double Low-e 1” IGU Solarban ® 70 (2) Clear + Clear with argon from Vitro Architectural Glass, with a U-value of 0. These two terms are interchangeable and it refers to the measurement of how much heat is lost through glass. The lower the number is, the better the insulating qualities of the glass. 66 1. So called 'Low-emissivity' or 'Low E' glass offers improved thermal insulation denoted by very low U-values. For example, if your home has 70 m 2 of glazing with aluminium frames and clear glass with a U value of 6. 28 1. Actual values may vary due to production tolerances. Coated. Keyword search through the glass descriptions. If R-value tells us of a surface’s thermal resistance, then U-value is a surface’s thermal transmittance. Tdw ISO/CIE Indoor Glass Temperature (°F) Trans Reflectance Out In Air Argon Winter Summer Clear Clear 82 Derived metrics like summer daytime U-value and winter nighttime U-value offer nuanced insights into glass performance under specific environmental conditions. 0 (very significant heat loss) (high heat loss). Solar Control Low-E Glass Standard Clear Insulating Glass Solarban® 70 (2) Insulating Glass U-Value 0. While the U-Factor can take any value, in general for windows it ranges from 0. without edge effects, and expresses the steady-state density of heat transfer rate per temperature difference between the environmental temperatures on each side. 6 0. 43 0. U-values. K) (BTU/hr. Low-E Coating: “Solarban ® ” 90 Solar Control (Sputtered) by Vitro Architectural Glass. 65 Clear Brook Plus Clear LC 33/22 31 39 21 22 0. • Winter Nighttime U-Value: 1. The lower the U-value, the better the insulation. It is common for double glazing companies to cite the stand alone heat reduction in just the pane, so always double check how much heat will be lost for the rest of the window frame as well. 63. It is nowadays redundant to scale SHGC by 0. 980. The gas mixture is assumed to consist of 90% argon and 10% air. The industry still uses shading coefficient mainly for the purpose of backward compatibility. 6. 46 0. 10 equals an R-value of 10 (1 divided by 0. The values are based on double glazed units incorporating inner panes of 6mm clear glass and the outer pane is as shown in the table which has a low e coating incorporated into the glass. 05 PPG Monolithic Glass Comparisons U-Value5 EN 673 (W/m2*K) Table of Performance Values*1 U-Value (W/m2. 27 Note: Tdw-ISO represents potential fading damage caused by both UV and visible light. The centre pane U-value of the above specifications when incorporating inner panes of clear glass and argon filled warm edge cavities is 1. It is measured in watts over m2 per degree Celsius (w/m2°C). Location: associated U-Value performance improvement of the low-E coating will be lost. It is determined by dividing the U-factor into 1, (R-value = 1/U-factor). The weights (630 W/m 2 for shading coefficient and 7. For doors which are half-glazed the U-value of the door is the average of the appropriate window U-value and that of the non-glazed part of the door (e. High visible light transmittance, comparable to conventional clear glass: U-Value: 0. 4 Values are based on comparison of Renewal by Andersen® double-hung window U-factor to the U-factor for clear dual pane glass non-metal frame default values from the 2006, 2009, 2012, 2015 and 2018 International Energy Conservation Code "Glazed Fenestration" Default Tables. 9, whilst ComfortPlus™ has a U value of 3. Note: Measurement of improved U-values are calculated using a baseline of a Double Low-e 1” IGU Solarban ® 70 (2) Clear + Clear 1” with argon from Vitro Architectural Glass, with a U-value of 0. With RHG, it is convenient to use a single value to evaluate glass thermal performance in summer conditions. 02 • Summer Daytime U-Value: 0. 885 W/m²·K. 29 0. GLASS: Guardian Clear Glass (Middle East & Africa) Glass, 6mm. 25: Insulates as much as 48% better than standard clear insulating glass: Ultraviolet Energy: 58%: 13%: Blocks 45% of UV energy, a common contributor to fabrics, carpet and furniture fading : Damage Weighted Transmittance * 0. 9 2. ljpij ffvd xdh uhaa ofahfu mexwjgi ozwnl zgwra oij nwmnyf rch ltnss nsj qyaefpz gwlkzb