Vertical Illuminance Measurement for Clear Skies in Tehran

vertical illuminance measurement for clear skies in tehran

to effectively design daylight in buildings, daylight availability data are necessary. although there is a great potential for daylight energy in iran, its use has been hampered by the absence of measured data. in this paper the illuminance data on the vertical south facing surfaces of tehran were estimated using the iesna model. for this propose an illuminance measuring set was used in order t...

Estimation of illuminance on the South facing surfaces for clear skies in iran.

BACKGROUND Daylight availability data are essential for designing effectively day lighted buildings. In respect to no available daylight availability data in Iran, illuminance data on the south facing vertical surfaces were estimated using a proper method. METHODS An illuminance measuring set was designed for measuring vertical illuminances for standard times over 15 days at one hour interval...

estimation of illuminance on the south facing surfaces for clear skies in iran

background: daylight availability data are essential for designing effectively day lighted buildings. in respect to no available daylight availability data in iran, illuminance data on the south facing vertical surfaces were estimated using a proper method. methods: an illuminance measuring set was designed for measuring vertical illuminances for standard times over 15 days at one hour interval...

Blue Skies: A Methodology for Data-Driven Clear Sky Modelling

Solar energy is gaining prominence across the world in response to climate change, depleting reserves, lowering costs, and favorable legislation. However, a key challenge in integrating solar power into the grid is the ability to forecast solar energy production accurately. The variability and uncertainty of solar power can negatively impact grid stability and increase the cycling costs of conv...

Commentary I: skin cancer: clear skies sometimes help.

Spectral polarization of clear and hazy coastal skies.

Linear polarization of the clear daytime sky has often been measured as a spectrally integrated or quasi-monochromatic variable, but seldom as a spectral one. So we use a hyperspectral imaging system to measure skylight polarization at high spectral and angular resolutions for clear and hazy skies at our coastal site. The resulting polarization maps and spectra exhibit both commonalities and di...