Holistic Post-Occupancy Evaluation of The Harmless Home
Notice bibliographique
Résumé
Post-occupancy evaluation (POE) is a method that can provide feedback throughout a building's lifecycle from the initial concept to the occupation. From this feedback, it is possible to help stakeholders, designers, and policymakers with recommendations for future projects from the lessons learned in the previously evaluated building. Having that said, the research objective is to assess the performance of the Harmless Home and Just BioFiber holistically in order to help stakeholders, designers, and policymakers to have more options to achieve the carbon net-zero building requirement. A POE of the Harmless Home was conducted using the International Initiative for a Sustainable Built Environment (iiSBE) protocol to investigate and analyze the results. Four critical key performance indicators (KPIs) were analyzed in this paper: energy and emissions, water, indoor environmental quality (IEQ), and cost. Several lessons were taken for this, but the most significant one is for the energy and emissions, showing that the exterior wall had a higher R-value than predicted in the building energy modelling (BEM), resulting in less energy consumption. Furthermore, the solar panels were able to produce more energy than required in the house, enabling them to return energy to the grid and consequently saving CO2. More specifically, about the JBF, two evaluations were done regarding its performance: (1) hygrothermal performance analysis and (2) life cycle assessment. Hygrothermal performance analysis of the modified hempcrete used in the Harmless Home from Just BioFiber (JBF) in different Canadian climate zones and with different geographic orientations and exterior finishing to analyze where it would be possible to use the block without any additional vapour retarder. In order to analyze the hygrothermal performance, two main criteria were considered, the moisture content over time in different layers of the wall assembly and the improved model to predict mould growth revised and adopted by ASHRAE standard 160-2016. From the Canadian zones analyzed, climate zone 6 with a wind-driven oriented accumulated moisture over time, and climate zone 5 (both standard and wind-driven oriented) and 6 (non-wind-driven oriented) should have additional attention like the mould growth index (MGI). And last but not least, the environmental impact assessment of the Harmless Home and JBF LCA was conducted to analyze the embodied and operational carbon emissions. Two different construction methods were compared in the whole building life cycle assessment: (1) modified hempcrete block (JBF) for the exterior walls and insulated concrete forms (ICF) for the foundation compared to (2) the traditional construction method used in Canada with wood-frame for the exterior walls and reinforced concrete for the foundation in a whole-building LCA using One Click LCA as an LCA platform. Regarding the embodied carbon emissions, case (1) released 14% less greenhouse gas emissions than case (2), also having the ability to sequester 13 tons of CO2e. Regarding the operational carbon, both cases could save 11 tons of CO2e due to solar panels' energy production higher than the necessary usage of the house in 60 years. Thus, the main conclusion is that building material selection should be considered concerning the urgent need to mitigate global climate change impacts. CO2e. From the overall results across all the performances, the Harmless Home and JBF performed well regarding the POE, hygrothermal performance and LCA, which, based on the results, can contribute to minimizing environmental impacts and mitigating climate change.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,008 | 0,009 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,001 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,001 | 0,002 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,005 | 0,001 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».