CALCULADORA DE 24.04.
2020
Por Mata, Ramón
DESEMPEÑO
Nuevo Proyecto 01
Visible Light Ultraviolet Solar Energy Thermal Properties
Glass Glass
Nombre de Trans Indice Trans Abso
1& 2& Transfer U-Value (Ug
Composició mitta Reflectance de
Trans
Skin CIE mitta Reflectance rptan Factor
Coeficie
encia de Btu/hr·ft²·F)
Coati Coati Reprod Damage Damage nte de
n nce UV (τuv nce ce Solar calor Valor R
ng ng uccion
%)
Factor Factor
(g)
sombra
secunda
Visible ρv % Cromati (Fsd) (τdf) Solar ρe % Solar (sc)
ρv % in ρe % in rio (qi) [per ISO [3 decim
(τv %) ext ca (Ra) (τe %) ext (αe %) 10292] als]
Guar
dian
Composició
Gray
n por N/A 56 6 6 97.0 33 0.08 0.49 58 6 6 36 0.67 0.77 9.23 1.0 1.022 0.98
(Latin
defecto 01
Ame
rica)
Cálculo estándar: ISO 9050: 2003
Composición por defecto 01
Exterior
Guardian Gray (Latin America) #1 -----
HOJA 1
Espesor = 5/32" = 4 mm #2 -----
Total Unit (Nominal) = 5/32 en / 4 mm Inclinación = 90°
PESO CONFIGURACION ESTIMADO 1.96 lb/ft²
Interior
Important Notes
Calculations and terms in this report are based on ISO 9050: 2003 and ISO 10292: 1994. The performance values shown above
represent nominal values for the center of glass with no spacer system or framing.
Laminated products:
It is not guaranteed that modeled laminated configurations will be compliant with relevant laminated safety regulations unless
specifically declared for Guardian products. It is the user’s sole responsibility to assess if the final laminated product should be
certified according to relevant standards and ensure compliance with laminated safety regulations.
Additional consequences for laminated glass with coating facing interlayer (due to contact between coating and interlayer) may
include (not limited to): significant decrease of safety performance for some coating and interlayer combinations; loss of thermal
insulation performance of surface facing the interlayer; noticeable color change; other performance deterioration.
Non-specular products (translucent or diffuse):
The performance measurement for non-specular (translucent or diffuse) materials such as translucent interlayers or acid etched glass
surface, or surface with ceramic frit is limited by the current experimental technologies. Since measurements capture physically only a
part of the resulting radiation, calculated performance results provided herein and based on such measurements are not compliant
with any standard (including EN 410) and may only be used as a general reference. Actual values may vary significantly based upon
exact fabrication process, as well as type, thickness and color of used non-specular material.
Explanation of Terms according to ISO 9050: 2003 and ISO 10292: 1994.
Visible Light Transmittance (Tv, %) is the percentage of incident light in the wavelength range of 380 nm to 780 nm that is
transmitted by the glass.
Ultraviolet (UV) Transmittance (Tuv, %) is the percentage of the incident solar radiation transmitted by the glazing in the 300 nm to
380 nm range. The relative spectral distribution, Sλ, used to calculate the UV-transmittance is derived from the global solar
irradiance given in ISO 9845-1:1992, Table 1, column 5.
Solar Energy Direct Transmittance (Te, %) is the percentage of solar energy at normal incidence directly transmitted by the glass.
Solar Energy is the radiant energy from the sun having a wavelength range of 300 nm to 2500 nm at an air mass of 1.0, global,
per CIE #85: 1989.
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Visible Light Reflectance Outdoors/Indoor (Rv out/in, %) is the percentage of incident visible light directly reflected by the glass.
Solar Direct Reflectance Outdoors/Indoors (Re out/in, %) is the percentage of incident solar energy directly reflected by the glass.
Solar Energy Absorptance (Ae, %) is the percentage of the sun's energy that is absorbed by glass.
Shading Coefficient (sc) is Solar Factor divided by 0.87. It is a measure of the solar heat gain referenced to 3 mm clear glass which
has the designated value of 1.00.
Solar Factor or Total Solar Energy Transmittance or g-value (g%) is the total solar radiation transmitted by the glass.
Secondary Heat Transfer Coefficient (qi) ) is the result of heat transfer by convection and longwave IR-radiation of that part of the
incident solar radiation which has been absorbed by the glazing.
CIE damage factor (τdf) is the factor associated with solar radiation in the wavelength range of 300 nm to 600 nm which may
contribute to damage of materials.
Skin damage factor (Fsd) is the factor associated with solar radiation in the wavelength range of 300 nm to 400 nm which may
contribute to damage of skin.
Colour Rendering Index in transmission, D65 (Ra) is the change in colour of an object as a result of the light being transmitted
through the glass.
U value - parameter of glazing which characterizes the heat transfer through the central part of the glazing, i.e. without edge effects,
and states the steady-state density of heat transfer rate per temperature difference between the environmental temperatures on each
side.
The U value is given by: 1/U = 1/he +1/ht + 1/hi
Where he and hi are the external and internal heat transfer coefficients; ht is the total thermal conductance of the glazing. The U
value is given in watts per square metre Kelvin [W/(m²×K)].
The external heat transfer coefficient (he) is a function of the wind speed near the glazing, the emissivity and other climatic
factors. For ordinary vertical glass surfaces the value of (he) is standardized to 23 W/(m²×K) for the purposes of comparison of
glazing U values.
Corrected emissivity of uncoated soda lime and borosilicate glass surface is 0,837. This procedure does not consider the
improvement of the U value due to the presence of externally exposed coated surfaces with an emissivity lower than 0,837.
Temperature difference between bounding glass surfaces is 15 K. Mean temperature of gas space is 283 K.
Emissivity is the ratio of the radiance from the surface to that from a black body viewed under identical optical and geometrical
conditions and at the same temperature. The emissivity value given to a material is the ratio of heat emitted compared to a black
body, on a scale of 0 to 1. A black body would have an emissivity of 1 and a perfect reflector would have a value of 0.
Normal Emissivity (εn) refers to the ratio, in a direction normal to the surface, of the emissive power of the surface of the glass
to the emissive power of a black body.
Corrected Emissivity (ε) is calculated by multiplying the normal emissivity (εn) by a suitable correction coefficient, selected
according to the normal emissivity value. The values of the correction coefficients were decided on the basis of extensive
measurements of the angular emissivity of uncoated glass, borosilicate glass and glass ceramics and of architectural coated
glass. The corrected emissivity of uncoated float glass, borosilicate glass and glass-ceramics at 283 K was standardized at
0.837.
Descargo de responsabilidad:
Se proporciona este análisis de prestaciones con el propósito limitado de ayudar al usuario en la evaluación de las prestaciones de
los productos de vidrio identificados en este informe.
Los datos espectrales correspondientes a los productos fabricados por Guardian constituyen valores nominales derivados de
muestras típicas de producción o ensayos iniciales de tipo, realizados para la certificación CE, y pueden variar en función de
tolerancias de fabricación y cálculo. Los datos espectrales correspondientes a productos no fabricados por Guardian se han extraído
de la base de datos LBNL International Glazing Database y no han sido verificados de forma independiente por Guardian. Guardian
recomienda que se apruebe un prototipo a escala real.
Los valores aquí proporcionados se generan siguiendo prácticas de ingeniería establecidas, así como los estándares de cálculo
aplicables. Las características de acristalamiento pueden verse afectadas por numerosos factores, entre ellos el tamaño de los
paneles, la orientación del edificio, el sombreamiento, la velocidad del viento, el tipo de instalación o el proceso de producción. Tanto
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los resultados como la aplicabilidad del análisis están directamente relacionados con los datos introducidos por el Usuario, y los
resultados pueden verse afectados de forma significativa por cualquier modificación asociada a las condiciones reales. Los usuarios
del análisis se responsabilizan de garantizar que la aplicación prevista es adecuada y respeta todas las leyes, reglamentos, normas,
códigos deontológicos, directrices de procesamiento y demás requisitos pertinentes. Guardian no garantiza que el acristalamiento
aquí modelado vaya a estar disponible para su suministro por parte de Guardian o cualquier otro fabricante. El usuario se
responsabiliza de comprobar con el fabricante la disponibilidad de cualquier tipo de vidrio o composición
Aunque Guardian ha hecho todo lo posible, de buena fe, para comprobar la fiabilidad de las herramientas utilizadas para este
análisis, éstas pueden incluir errores de programación desconocidos que podrían arrojar resultados inexactos. El usuario asume
todos los riesgos asociados a los resultados proporcionados y es el único responsable de seleccionar los productos adecuados para
su aplicación. Guardian no emite ningún tipo de garantía expresa ni tácita en relación con las herramientas utilizadas por Guardian y
este análisis. No se emiten garantías de comerciabilidad, no infracción e, idoneidad para un fin concreto en relación con las
herramientas utilizadas por Guardian y este análisis, como tampoco garantías tácitas generadas por ministerio de la ley o de otra
forma. Las únicas garantías aplicables a los productos de Guardian son las que se proporcionan de forma individual y por escrito en
relación con cada producto. Guardian no se responsabilizará bajo ningún concepto de cualesquier daños y perjuicios de carácter
directo, indirecto, especial, emergente o colateral relacionados con las herramientas y análisis de Guardian o derivados de su uso.
Trademarks owned by Guardian Industries, LLC and/or its affiliates may be registered in the United States and other jurisdictions. All
other trademarks are property of their respective owners.
Versión de programa: 4.1.0.8650
Versión de base de datos: 20200421
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