Building Integrated Sub-Slab Thermal Storage System for Coupling to a Heat Pump: Modelling, Optimization, and Thermal Performance
Notice bibliographique
Résumé
Canada, like most countries around the world, has adopted targets for reducing the green gas emissions associated with the built environment. In addition to reducing green gas emissions, goals for improving the resilience to climate change, and making buildings energy-wise, more comfortable, and more affordable, were adopted as well. In this context, low energy, and net zero energy buildings are becoming a target in the research field, through the incorporation of renewable energy systems and thermal energy storage among others. The green gas emissions associated with the energy use in buildings can be significantly reduced by taking an integrated approach for heating, cooling, ventilation, dehumidification, and domestic hot water heating when designing new buildings, or retrofitting existing ones. The research investigates the performance of a sub-slab ground heat exchanger, coupled to a heat pump system, and the ability of the system to provide space conditioning and domestic hot water heating for a low-rise multi-unit residential building. The thermal performance of the system was assessed through simulation for a multi-unit residential construction in Ottawa. Simulations using weather files for other five locations in different climate zones across Canada were conducted as well, to assess the suitability of the system to other climate conditions. Parametric analyses were conducted to optimize both the design of the building and of the ground heat exchanger. Appropriate control strategies were investigated also to optimize the energy consumption of the heat pump and the auxiliary equipment. According to the results, the system is able to fully meet the space conditioning and domestic hot water heating needs of the building. The annual electricity consumption of the heat pump was estimated to be 11.4 GJ per dwelling unit. Adding the energy use associated with lights and appliances, and all the auxiliary equipment, the total energy consumption of a dwelling unit was 24.4 GJ. Considering the average annual energy consumption of a dwelling unit in low-rise multi-unit residential building as 46.7 GJ, the investigated system can achieve approximately 40% reduction of the energy use.
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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) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 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 découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, 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 ».