Paper Conference

Proceedings of BSO Conference 2022: 6th Conference of IBPSA-England


Towards a universal access to Urban Building Energy Modelling - The case of low-income, self-constructed houses in informal settlements in Lima, Peru

Argyris Oraiopoulos 1, Pamela Fennell 1, Shyam Amrith 1, Martin Wieser Rey 2, Ivan Korolija 1, Paul Ruyssevelt 1
1 UCL Energy Institute
2 Pontificia Universidad Católica del Perú

Abstract: By 2050 urban population is estimated to grow from 4 billion to almost 7 billion, with over 90% expected in the Global South, where development often takes place as unplanned informal settlements, with essen- tial shortage of critical infrastructure. In process- ing some of the associated rising challenges, Urban Building Energy Models can play a key role. How- ever, such models have had limited presence in this context, highlighting the inequalities in the represen- tation of such communities in this field. This pa- per works towards addressing this gap and presents the development of an Urban Building Energy Mod- elling workflow for analysing the thermal comfort in a self-constructed, low-income housing neighbourhood in Lima, Peru, using an innovative approach, based largely on open source software, such as EnergyPlus, QGIS and Python. The results highlight that the compact and dense built form of the building blocks, can cause higher heat retention, especially in lower thermal zones and therefore result in high indoor tem- peratures for longer. Additionally, the poor thermal performance of the buildings’ fabric, can cause hourly indoor temperatures to rise to critical levels, espe- cially in higher thermal zones, which can have ad- verse impacts on the residents’ health. This first step in understanding some of the key issues these com- munities are facing, is critical in the early assessment of future building retrofit decisions.
Keywords: Global South, Urban Building Energy Modelling, Thermal Comfort, Low-income housing, Self-constructed houses