Report of Case Study on EN ISO 52016-1, Annex F, Solar shading reduction factors
See introduction and links below
This document is intended to present the case study and to discuss the contents of Annex F, Calculation of solar shading reduction factors of EN ISO 52016-1:2017, Energy performance of buildings - Energy needs for heating and cooling, internal temperatures and sensible and latent heat loads — Part 1: Calculation procedures.
This concerns the calculation method to assess the solar shading reduction factor in case of external obstacles, as viewed from an object at arbitrary orientation and tilt angle, such as a building element (window, façade, roof), thermal solar collector or PV panel.
A dedicated spreadsheet has been developed to demonstrate the calculation procedures.
The case study shows which input and parameters are needed and the output of the calculation procedures.
The case study also shows how the output of the spreadsheet on EN ISO 52010-1:2017, Energy performance of buildings — External climatic conditions — Part 1: Conversion of climatic data for energy calculations, (see Case study on that standard, ) can be directly used as input.
The output is -of course- intended to be used as input for the calculation of energy needs for heating and cooling and internal temperatures according to EN ISO 52016-1, but also for other EPB standards, such as the standards on photovoltaic systems and thermal solar systems.
The case study focuses on the detailed method to calculate hourly the shading of direct solar radiation.