Hygrothermal calibration and validation of vernacular dwellings: A genetic algorithm-based optimisation methodology

Costa-Carrapiço, Inês; Croxford, Ben; Raslan, Rokia; González, Javier Neila

doi:10.1016/j.jobe.2022.104717

Cited by 5 publications

(6 citation statements)

References 103 publications

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“…For the published outcome of the first, third, and fourth stages the interested reader may refer to [41][42][43]. The methods employed for the second stage, i.e.…”

Section: Methodsmentioning

confidence: 99%

“…(2) OTa: Outdoor Air Temperature; Ta: Indoor Air Temperature; RH: Relative Humidity; Ts: Surface Temperature; Tg: Globe Temperature; Tmrt: Mean Radiant Temperature; Va: Air Velocity; Lux: Natural illuminance; IAQ: Indoor Air Quality; dB: Sound level; U-value EW: Thermal Transmittance of the external walls; (3) Ta, RH, and Va; (4) Tmrt; (5) IAQ, Lux, dB; (6) Lux; (7) U-value; (8) Stage 3 of the research published in [41]. (9) Stage 4 of the research published in [43].…”

Section: Methodsmentioning

confidence: 99%

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Indoor environmental conditions in vernacular dwellings in Alentejo, Portugal

Costa-Carrapiço¹,

González

Raslan

2022

Science and Technology for the Built Environment

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Understanding the indoor environmental conditions of livable architectural heritage such as vernacular dwellings is a key step towards its conservation. Yet, there is a lack of large-sample studies that assess indoor conditions using long-term quantitative and qualitative data complying with monitoring standards. This paper addresses this gap in Portuguese vernacular dwellings using long-term mixed methods, by analyzing the thermal performance, indoor air quality, and illuminance of 22 case studies. Key findings highlight the role of thermal mass in damping the outdoor thermal wave and providing thermal stability, night ventilation, and lack of windows. Summer thermal performance bettered that of winter, but occupant control strategies negatively impacted thermal stability and overheating. In winter, the most prevalent heating system, electric, performed less efficiently than radiant heating, leaving occupants exposed to thermal discomfort and health risks from cold, mold, and toxins from wood-burning and cooking. Important discrepancies were found between the illuminance monitored and survey data, indicating the significance of cultural practices in indoor environment acceptability and expectations.

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“…For the published outcome of the first, third, and fourth stages the interested reader may refer to [41][42][43]. The methods employed for the second stage, i.e.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Indoor environmental conditions in vernacular dwellings in Alentejo, Portugal

Costa-Carrapiço¹,

González

Raslan

2022

Science and Technology for the Built Environment

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“…Given the lack of consistent methodology or guidelines for the validation of hygrothermal models in the context of historic constructions [79], the statistical quantification suggested in ASHRAE Guidelines 14: 2014 [80] is hereby considered. Although this method was originally defined for energy simulations, it is often adopted to evaluate the accuracy of hygrothermal simulations for historic buildings [4,[81][82][83][84][85].…”

Section: Library Of San Giorgio In Poggialementioning

confidence: 99%

Thermal renders for traditional and historic masonry walls: Comparative study and recommendations for hygric compatibility

Posani

Veiga

Freitas

2023

Building and Environment

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“…In the literature, many studies have tested the reliability of numerical simulations by making comparisons with monitored data [14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Calibration is often carried out by changing some input parameters. Some studies apply the calibration to a zone model [17,22]. Sadłowska-Sałęga et al [23] state that simulation without model calibration can give unacceptable results and therefore calibration is essential to achieve accurate calculations.…”

Section: Introductionmentioning

confidence: 99%

Thermal Modeling of a Historical Building Wall: Using Long-Term Monitoring Data to Understand the Reliability and the Robustness of Numerical Simulations

et al. 2022

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Thermal modeling of building components plays a crucial role in designing energy efficiency measures, assessing living comfort, and preventing building damages. The accuracy of the modeling process strongly depends on the reliability of the physical models and the correct selection of input parameters, especially for historic buildings where uncertainties on wall composition and material properties are higher. This work evaluates the reliability of building thermal modeling and identifies the input parameters that most affect the simulation results. A monitoring system is applied to a historic building wall to measure the temperature profile. The long-term dataset is compared with the result of a simulation model. A sensitivity analysis is applied for the determination of the influential input parameters. A two-step optimization is performed to calibrate the numerical model: the first optimization step is based on an optimized selection of the database materials, while the second optimization step uses a particle swarm algorithm. The results indicate that the output of the simulation model is largely influenced by the coefficients describing the coupling with the boundary conditions and by the thermal conductivities of the materials. Very good results are obtained already after the first optimization step (RMSE=0.75 °C) while the second optimization step improves further the agreement (RMSE=0.48 °C). The parameter values reported in the datasheets do not match those found through optimization. Even with extensive optimization using an algorithm, starting with monitoring data is insufficient to identify material parameter values.

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Hygrothermal calibration and validation of vernacular dwellings: A genetic algorithm-based optimisation methodology

Cited by 5 publications

References 103 publications

Indoor environmental conditions in vernacular dwellings in Alentejo, Portugal

Indoor environmental conditions in vernacular dwellings in Alentejo, Portugal

Thermal renders for traditional and historic masonry walls: Comparative study and recommendations for hygric compatibility

Thermal Modeling of a Historical Building Wall: Using Long-Term Monitoring Data to Understand the Reliability and the Robustness of Numerical Simulations

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