NAME

Sim::OPT::Modish.

SYNOPSIS

use Sim::OPT::Modish;
modish(Esp-r_configuration file);

DESCRIPTION

Sim::OPT::Modish is a program for calculating the modification of diffuse solar shading to be specified in the ISH (shading and insolation) files of ESP-r building simulation suite to take into account the effect of the reflections due to the shadings. That effect is calculated: 1) by calculating the difference between: (a) the amount (measured as irradiance) of solar radiation (including direct and diffuse) impinging a surface in the case that obstructions have their true reflectivity and all other surfaces with the exception of the ground are completely black; b) the amount of solar radiation impinging the external side of that surface in the case that solar obstructions and all other surfaces in the scene with the exception of the ground are completely black. 2) by calculating the ratio of: (a) the result of the calculation at point 1; and b) the amount (measured as irradiance) of diffuse solar radiation impinging the surface. The value given by 1) minus the result of 2) gives the diffuse shading factor to be put in the ISH file for that surface. When the reflections due to the shadings increase the amount of radiation arriving on the surface, that diffuse shading factor is negative.

Gian Luca Brunetti, Politecnico di Milano, 2015. gianluca.brunetti@polimi.it

EXPORT

"opt".

SEE ALSO

The available examples are collected in the "example" directory in this distribution.

AUTHOR

Gian Luca Brunetti, <gianluca.brunetti@polimi.it>

COPYRIGHT AND LICENSE

Copyright (C) 2015 by Gian Luca Brunetti and Politecnico di Milano. This is free software. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 or later.