Characterization of Building Integrated Phase Change Materials Using Experiments and Simulation
Pourquoi ce travail est dans la base
Une base qui oublie comment elle a trouvé un travail ne peut pas être vérifiée. Voici les voies qui ont admis celui-ci.
Notice bibliographique
Résumé
Phase change materials (PCMs) are a latent thermal storage solution which passively store energy, such as solar energy, and delay its release into a space, reducing peak cooling loads in summer and prolonging passive heating in winter. PCMs are most effective when their melting temperatures are near the room temperature setpoint. In locations with two distinct conditioning seasons and thus two different setpoints throughout the year, two PCMs may be optimal for reducing both conditioning loads. However, research on these optimizations remains limited. The objective of this research was to expand the knowledge of buildings with PCM, such as two PCMs of different melting temperatures to optimize for two space conditioning seasons. This was achieved through thermophysical property experiments and single room modelling to predict trends in PCM performance, full-scale in-situ experiments, and full house modelling across Canada and the United States. For the in-situ experiments, two chambers with interior dimensions of 2.4 m by 2.4 m by 2.4 m were designed, constructed, and commissioned to experimentally compare a dual PCM wallboard to a reference-case room without PCM. The PCMs decreased the heating and cooling loads by 14.5% and 12.0%, respectively, from January until July 2023 in Ottawa, Canada. Full house modelling was conducted using EnergyPlus, and the time of use implications of PCMs were assessed both economically and in terms of the carbon emissions. The PCMs reduced space heating loads throughout the night, but due to the low space cooling load, the peak emissions and economic reductions were relatively small. The modelling analysis was expanded across Canada and the United States on four house archetypes to quantify the energy, emissions, and economics associated with PCM. In moderate and warm locations, greater space conditioning reductions occurred with a single PCM, whereas in highly heating dominant locations, two PCMs with different melting temperatures provided greater benefits. The emissions payback period was as low as 0.3 years, due to the reductions in space heating and cooling loads. The results suggest significant promise for PCMs in reducing the carbon footprint associated with building space conditioning, particularly for emissions intensive space conditioning systems.
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.
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
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 découle