Conflicts in passive building performance: Retrofit and regulation of informal neighbourhoods

Araújo, Gonçalo; Pereira, Inês; Leitão, António; Guedes, Manuel Correia

doi:10.1016/j.foar.2021.02.007

Cited by 4 publications

(5 citation statements)

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“…The goals were to find (1) the cheapest and (2) fairest retrofit solution for all buildings that (3) minimized annual heating and cooling loads, i.e., Each building is represented as a variable with 4 options for its corresponding construction period: (1) no retrofit, (2) wall retrofit, (3) roof retrofit, and (4) wall and roof retrofit (Table 1). The defined objective functions for the optimization are intended to minimize annual loads (kWh/m 2 ), cost (€), and standard deviation (σ) to ensure some homogeneity of performance among all buildings (Araújo et al, 2021). This MOO experiment used two methods: (1) a simulation-based approach that fully simulates each building block in each MOO evaluation, and (2) using our surrogate model.…”

Section: Predictionmentioning

confidence: 99%

“…Thus, we used different supervised learning models from the Sci-Kit learn package for Julia. From those, to find the most suitable model, we must (1) understand how the parameters affect energy consumption in a building (Araújo et al, 2021), and (2) test multiple models (Wolpert & Macready, 1997). Figure 4 shows interpolations of the energy needs (z-axis) according to our discrete (layers) and continuous (x-and y-axis) parameters step sizes.…”

Section: Digital Design and Fabrication Of A 3d Concrete Printed Funi...mentioning

confidence: 99%

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Proceedings of the 27th Conference on Computer Aided Architectural Design Research in Asia (CAADRIA) [Volume 2]

2022

CAADRIA Proceedings

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This paper discusses the design and development of scale masonry structures using robot arms, computer vision hardware and bespoke computational workflows. In parallel to the development of full-scale masonry solutions using a Cable Driven Parallel Robot (CDPR), a faster method for testing large numbers of brick elements is needed to verify buildability, mitigate collisions, and think differently about recycled materials during real-world construction activities. Additionally, by incorporating scanning and analysis technology, materials can be digitized, and their attributes translated into variables for placement within an intended structure.

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Section: Predictionmentioning

confidence: 99%

Section: Digital Design and Fabrication Of A 3d Concrete Printed Funi...mentioning

confidence: 99%

Proceedings of the 27th Conference on Computer Aided Architectural Design Research in Asia (CAADRIA) [Volume 2]

2022

CAADRIA Proceedings

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“…In each of the five case studies, the existing buildings were evaluated in terms of their interior comfort and daylighting using ladybug and honeybee tools [10] that integrate both Energyplus [i] and Daysim [ii] in a single simulation workflow. This integrated simulation approach has yielded promising results in the past for similar analyses and assessments [11,12].…”

Section: The Case Study Of Ondjivamentioning

confidence: 99%

Comparison of passive design strategies to improve living conditions: a study in Ondjiva, Southern Angola

Aleixo

Araújo²,

Guedes³

2021

Renew. Energy Environ. Sustain.

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Passive design strategies aim at creating comfortable buildings while reducing their energy consumption. Simple strategies such as the correct orientation of the building, the correct design of the building's openings, or the correct sizing of the building's constituent parts (such as walls, ceilings, etc.) according to their material specificities (regarding the region's climate) would greatly improve the performance of a building. This paper intends to show how the application of simple passive techniques in housing design can reduce the energy loads spent annually and improve the house's interior comfort. It translates the results of interior comfort computer simulations into suggestions for the application of passive strategies in housing design, to improve the living conditions in Southern Angola.

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“…Most BPS is time-consuming and still requires a considerable amount of time to perform the calculations for multiple or large models. This constitutes a significant limitation, particularly for BPO that requires testing of multiple iterations of a project [8,9].…”

mentioning

confidence: 99%

“…The use of ADA constitutes a trade-off, since it allows practitioners to obtain higher portability between their projects' design, performance analysis, and optimization, at the cost of having to learn programming languages that have a high learning curve [23]. Moreover, ADA does not address the remaining limitations of BPS processes, which still require significant computation time, expertise, and testing to be successfully applied [9,13].…”

mentioning

confidence: 99%

Surrogate Models for Efficient Multi-Objective Optimization of Building Performance

Araújo

Gomes

et al. 2023

Energies

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Nowadays, the large set of available simulation tools brings numerous benefits to urban and architectural practices. However, simulations often take a considerable amount of time to yield significant results, particularly when performing many simulations and with large models, as is typical in complex urban and architectural endeavors. Additionally, multiple objective optimizations with metaheuristic algorithms have been widely used to solve building optimization problems. However, most of these optimization processes exponentially increase the computational time to correctly produce outputs and require extensive knowledge to interpret results. Thus, building optimization with time-consuming simulation tools is often rendered unfeasible and requires a specific methodology to overcome these barriers. This work integrates a baseline multi-objective optimization process with a widely used, validated building energy simulation tool. The goal is to minimize the energy use and cost of the construction of a residential building complex. Afterward, machine learning and optimization techniques are used to create a surrogate model capable of accurately predicting the simulation results. Finally, different metaheuristics with their tuned hyperparameters are compared. Results show significant improvements in optimization results with a decrease of up to 22% in the total cost while having similar performance results and execution times up to 100 times faster.

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Conflicts in passive building performance: Retrofit and regulation of informal neighbourhoods

Cited by 4 publications

References 18 publications

Proceedings of the 27th Conference on Computer Aided Architectural Design Research in Asia (CAADRIA) [Volume 2]

Proceedings of the 27th Conference on Computer Aided Architectural Design Research in Asia (CAADRIA) [Volume 2]

Comparison of passive design strategies to improve living conditions: a study in Ondjiva, Southern Angola

Surrogate Models for Efficient Multi-Objective Optimization of Building Performance

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