Shading Calculation Methods and Regulation Simplifications—The Portuguese Case

How to analyse the omissions of thermal regulations and evaluate methodologies that provide building execution or thermal certificates that do not correspond to reality and usually incur costs? We can start by analysing different simulation methods and shading calculations that provide solar gains a...

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Main Authors: Marta Fernandes Oliveira, Paulo Mendonça, Martin Tenpierik, Pedro Santiago, José F. Silva, Lígia Torres Silva
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Buildings
Subjects:
Online Access:https://www.mdpi.com/2075-5309/13/6/1521
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author Marta Fernandes Oliveira
Paulo Mendonça
Martin Tenpierik
Pedro Santiago
José F. Silva
Lígia Torres Silva
author_facet Marta Fernandes Oliveira
Paulo Mendonça
Martin Tenpierik
Pedro Santiago
José F. Silva
Lígia Torres Silva
author_sort Marta Fernandes Oliveira
collection DOAJ
description How to analyse the omissions of thermal regulations and evaluate methodologies that provide building execution or thermal certificates that do not correspond to reality and usually incur costs? We can start by analysing different simulation methods and shading calculations that provide solar gains and shadow optimisation. After evaluating how the regulations define the calculation assumptions and how this calculation is performed, the discrepancies (simplifications) that the regulations allow or ignore are presented, and it is exemplified using two case studies. Using the Portuguese regulation as a case study, it leads to incorrect conclusions or assumptions due to unequal access to solar radiation or the shading factor calculation that experiences the omission of angles or time periods. Therefore, the aim is to propose a calculation process (premises) that minimises the discrepancies between simulation (optimisation strategy) and reality (applicability of strategies) for sustainable output.
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spelling doaj.art-1849b72a78a349a7821926ac368e7fda2023-11-18T09:39:26ZengMDPI AGBuildings2075-53092023-06-01136152110.3390/buildings13061521Shading Calculation Methods and Regulation Simplifications—The Portuguese CaseMarta Fernandes Oliveira0Paulo Mendonça1Martin Tenpierik2Pedro Santiago3José F. Silva4Lígia Torres Silva5CTAC Research Centre, Engineering School, University of Minho, 4800-058 Guimarães, PortugalLab2Pt Research Centre, School of Architecture, Art and Design, University of Minho, 4800-058 Guimarães, PortugalFaculty of Architecture and the Built Environment, Delft University of Technology, 2628 BL Delft, The NetherlandsDepartment of Architecture and Urbanism, Fernando Pessoa University, 4249-004 Porto, PortugalPROMETEUS Research Centre, School of Technology and Management, Polytechnic Institute of Viana do Castelo, 4900-348 Viana do Castelo, PortugalCTAC Research Centre, Engineering School, University of Minho, 4800-058 Guimarães, PortugalHow to analyse the omissions of thermal regulations and evaluate methodologies that provide building execution or thermal certificates that do not correspond to reality and usually incur costs? We can start by analysing different simulation methods and shading calculations that provide solar gains and shadow optimisation. After evaluating how the regulations define the calculation assumptions and how this calculation is performed, the discrepancies (simplifications) that the regulations allow or ignore are presented, and it is exemplified using two case studies. Using the Portuguese regulation as a case study, it leads to incorrect conclusions or assumptions due to unequal access to solar radiation or the shading factor calculation that experiences the omission of angles or time periods. Therefore, the aim is to propose a calculation process (premises) that minimises the discrepancies between simulation (optimisation strategy) and reality (applicability of strategies) for sustainable output.https://www.mdpi.com/2075-5309/13/6/1521solar shadingpolitical-legislative premisesshading calculation methodssolar benefitssustainable cityineffective enforcement of regulations
spellingShingle Marta Fernandes Oliveira
Paulo Mendonça
Martin Tenpierik
Pedro Santiago
José F. Silva
Lígia Torres Silva
Shading Calculation Methods and Regulation Simplifications—The Portuguese Case
Buildings
solar shading
political-legislative premises
shading calculation methods
solar benefits
sustainable city
ineffective enforcement of regulations
title Shading Calculation Methods and Regulation Simplifications—The Portuguese Case
title_full Shading Calculation Methods and Regulation Simplifications—The Portuguese Case
title_fullStr Shading Calculation Methods and Regulation Simplifications—The Portuguese Case
title_full_unstemmed Shading Calculation Methods and Regulation Simplifications—The Portuguese Case
title_short Shading Calculation Methods and Regulation Simplifications—The Portuguese Case
title_sort shading calculation methods and regulation simplifications the portuguese case
topic solar shading
political-legislative premises
shading calculation methods
solar benefits
sustainable city
ineffective enforcement of regulations
url https://www.mdpi.com/2075-5309/13/6/1521
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