Heat transfer modelling on windows and glazing under the exposure of solar radiation

Pal, Sujoy; Roy, Biswanath; Neogi, Subhasis

doi:10.1016/j.enbuild.2009.01.003

Cited by 55 publications

(22 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the high reflectance of glasses, mainly at incidence angles higher than 45 degrees, can produce erroneous temperature estimations. 36,37 Nevertheless, IR thermography has been applied successfully to evaluate windows for industrial purposes, [38][39][40][41] to research fire endurance of tempered glass, 42 to study the mechanical defects and the elastic deformations on glass sheets, [43][44][45][46][47] to analyze the efficiency of solar cells 37,48 and to detect damages on fiber optics. 49,50 Stained-glass windows are composed by glasses, which can be painted with enamels and grisailles, mounted on lead cames to form window panels.…”

Section: Introductionmentioning

confidence: 99%

Comparative assessment of stained‐glass windows materials by infrared thermography

Palomar

Agua

Gómez-Heras

2018

Int J of Appl Glass Sci

View full text Add to dashboard Cite

This paper reports the analyses of infrared thermography images of two stained‐glass windows with the objective of the in situ characterization of this type of artworks. The analyses were carried out by active thermography. The observations revealed that glasses absorbed the long‐wave IR radiation emitted by the halogen lamps and their apparent surface temperature progressively increased. After switching the spotlight off, they experienced a progressive decrease in temperature. Silver stained glasses presented the same thermographic behavior than uncolored glasses because silver nanoparticles were too small or the yellow layer was too thin to produce a different response than the base glass with the IR radiation. The apparent surface temperature of enamels and grisailles depended on their thickness and color. Lead cames maintained an almost constant surface apparent temperature, except those painted that behave in a similar way than enamels. Metallic tin‐lead welds experienced the most important variation in the surface apparent temperature in reflection mode due to the energy reflected by the surface of the weld. Glass defects such as big bubbles were also observed.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative assessment of stained‐glass windows materials by infrared thermography

Palomar

Agua

Gómez-Heras

2018

Int J of Appl Glass Sci

View full text Add to dashboard Cite

show abstract

“…The convective and radiative heat transfer coefficients at the front surface 1 are respectively [24] h c;1 ¼ 2:8 þ 3:0v a (5) and…”

Section: Heat Transfer Coefficients [2223]mentioning

confidence: 99%

“…Thermal models were developed for analyzing optical and energy performance of window systems when exposed to direct sunlight, like the works of Ismail and Henriquez [3], Loutzenhiser et al [4] and Pal et al [5]. Windows coated with solar filters is able to block the heat transmission while allowing visible light to pass through [6].…”

Section: Introductionmentioning

confidence: 99%

Thermal characteristics of water-flow double-pane window

Chow

2011

International Journal of Thermal Sciences

View full text Add to dashboard Cite

“…Thus, the improvement of the window system is a very attractive area of research to develop energy-efficient buildings. In addition, the proper selection of glazing material can reduce the solar heat gain component in summer as also heat loss in winter [2] The amount of energy consumed through heating, cooling or lighting in a building is mostly affected by its fenestration system which provides a view, light and fresh air to the building. The study of the heat flow through the building 1 fenestrations is important for understanding and predicting its thermal behaviors.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Simulation for Nano-Coated Glass in Saudi Arabia

2016

IJAMAE

View full text Add to dashboard Cite

Abstract-The amount of heat flow within building interior is important for understanding and predicting its thermal behaviors. To achieve greater energy efficiency of a building, the performance of window system is required to improve. Glazing materials in windows provide adequate illumination levels in the interior of buildings receiving the visible part of solar radiation. The other part of solar radiation in the infrared region entering through glazing causes increase of interior temperature. Hence glazing is a major component in designing and analyzing problems such as energy demands, assessment of heating and cooling loads and thermal comfort in a building. This study focuses on the thermal behavior of glass for development of functional nano-coatings of window glazing for the regional conditions in Saudi-Arabia. Different materials and its optimized film properties of thickness and doping level of antimony tin oxides (ATO) were prepared and their optical and thermal properties were systematically investigated. Glass U-factor, Solar Heat Gain Coefficient (SHGC) and net heat transfer through window were calculated. The results showed that the thermal insulation of the glass effect of coating thickness and doping level was significant. The simulated net heat transfer through window decreased linearly with increase of both of coating thickness or ATO concentration. Furthermore, the overall transmittance in the visible region and reflectance in infrared and ultraviolent regions decrease with increasing of weight content of antimony doped tin oxides ATO, and similarly for increasing of coating thickness.

show abstract

Heat transfer modelling on windows and glazing under the exposure of solar radiation

Cited by 55 publications

References 19 publications

Comparative assessment of stained‐glass windows materials by infrared thermography

Comparative assessment of stained‐glass windows materials by infrared thermography

Thermal characteristics of water-flow double-pane window

Heat Transfer Simulation for Nano-Coated Glass in Saudi Arabia

Contact Info

Product

Resources

About