Solar Radiation and Daylight Models doc

[...]... Frequency of occurrence of diffuse and global illuminance (n) Zenith luminance models (o) New all-sky CIE standard for sky luminance distribution (p) Spectral radiation (q) Detailed measured data sets of solar radiation and other meteorological parameters (r) Web sites that provide solar radiation and daylight data and other related information In response to a demand from readers and reviewers of this book... global, diffuse and beam irradiation Monthly-averaged slope irradiation Daily slope irradiation Prog3-1.For Monthly-averaged hourly horizontal global, diffuse and beam irradiation Hourly horizontal global and diffuse irradiation using MRM Hourly horizontal global and diffuse irradiation using CRM Hourly horizontal global and diffuse irradiation using PRM Hourly horizontal global and diffuse irradiation using... amount of clearness index The EM spectrum between 0.1 and 100 ␮m showing the spectral distributions of solar radiation (left curve) and terrestrial (or thermal) radiation (right curve), and the corresponding spectral bands: UV, visible (VIS), NIR and FIR Note the limit between the solar domain and the terrestrial domain around 4 ␮m CIE standard photopic and scotopic curves Langley plots for two different... irradiance and illuminance (c) Distance between any two locations (solar radiation measurement site and location of its utilisation) (d) Characterisation of sky clarity indices and solar climate for any given location (e) Corrections for sky-diffuse irradiance measurements using a shade-ring device (f) Quality control of measured solar radiation and daylight data including outlier analysis (g) Cloud radiation. .. further the understanding of the physics of short-wave irradiation, with particular emphasis on the development of mathematical models for computational purposes The terms solar radiation, irradiation, radiance, irradiance, luminance and illuminance are frequently encountered in the literature and a note on their use is perhaps appropriate at this stage Solar radiation (W/m2) or luminance (candela/m2 (cd/m2))... Mean-monthly meteorological data for the UK, July–December Five-minute averaged measured solar data for Edinburgh, April 1993 Horizontal and slope solar radiation data for Bracknell, England Hourly-averaged horizontal diffuse, global and beam-normal solar radiation data for Bracknell, England Dry-bulb temperature and humidity ratio data for psychrometric chart prelims.qxd 2/7/04 17:04 Page xxiii LIST... research into solar radiation and daylighting in relation to environmental design New data have been collected – particularly though the CIE/WMO Daylight Measurement Programme and its related projects – and new empirical models have been developed Dr Muneer has been active in both aspects of the work Many numerical techniques now exist for calculating the distribution of radiation on and within buildings... hourly solar radiation stations 8.3.1 8.3.2 8.4.1 prelims.qxd 2/7/04 17:04 Page xxxiii INTRODUCTION Solar radiation and daylight are essential to life on earth Solar radiation affects the earth’s weather processes which determine the natural environment Its presence at the earth’s surface is necessary for the provision of food for mankind Thus it is important to be able to understand the physics of solar. .. global irradiation Horizontal global and diffuse daylight illuminance, Perez et al (1990) models Horizontal and slope global, diffuse daylight illuminance and zenith luminance, Muneer–Kinghorn models Daylight factors for CIE overcast sky Frequency distribution of clearness index, US locations Frequency distribution of clearness index, tropical locations Frequency distribution of clearness index, UK and. .. part of the solar radiation spectrum (0.39–0.78 ␮m) The term irradiation (W h/m2 or J/m2) and illumination (lumen-hour (lm-h)/m2) refer to the cumulative energy incident on a surface in a given period of time Irradiance (W/m2) and illuminance (lm/m2) refer to the instantaneous incident energy As it would be expected, daylight and solar radiation possess similar physical characteristics and the modelling .