Notice bibliographique
Résumé
Globally, buildings account for 40% of total energy consumption and 33% of total greenhouse gas (GHG) emissions. In cold climates such as Canada, space heating systems are primarily responsible for energy consumption and GHG emissions in buildings. Using gas absorption heat pumps (GAHPs) instead of natural gas (NG) furnaces, which are commonly used for space heating in many parts of Canada, is expected to reduce heating energy consumption and GHG emissions. The main goal of this thesis is to determine whether GAHPs are feasible to be used for space heating and cooling in cold climates, including the effects of frosting. The feasibility of GAHPs is assessed by comparing the energy consumption, fuel cost and GHG emissions of a GAHP with that of a NG furnace and an electric air-source heat pump (electric ASHP). Comparisons are included for heating only and for combined heating and cooling. To compare the GAHP with other space heating equipment, a small office building is modelled and simulated using eQUEST and hourly weather data of several Canadian cities. A thermodynamic model of the GAHP is then used to estimate energy consumption, fuel cost and GHG emissions in each city, and these values are compared to the values obtained with other space heating and cooling equipment. This thesis shows that GAHPs may be a feasible option in some cold climate cities and that frosting has a negligible impact on GAHP performance. During heating operation, a GAHP has lower energy consumption and GHG emissions compared to a typical high efficiency NG furnace in all cities investigated. A GAHP has higher combined heating and cooling energy consumption than an electric ASHP. On the other hand, a GAHP may have lower cost and GHG emissions compared to an electric ASHP depending on the local climate, ratio of electricity to NG fuel costs, and GHG emission intensity of the electric grid. In two of the nine Canadian cities investigated (Vancouver and Montreal), the GAHP has higher fuel costs compared to an electric ASHP because the cost of electricity is low compared to the cost of NG in these cities. In two of the nine cities (Saskatoon and Edmonton), the GAHP has lower GHG emissions because the emission intensity of the electric grid is high in these cities. The thesis also develops a method to predict if a GAHP will have lower fuel cost and GHG emissions compared to an electric ASHP in other cities without detailed simulation.
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 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 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 ».