Notice bibliographique
Résumé
This study focuses on estimating the potential energy savings regarding general laboratory ventilation with special emphasis on fume hood ventilation practices. The initial scope of the study aimed to audit all of the laboratory space on UBC’s Point Grey campus. It is well established that a fume hood uses as much energy as three houses; since there are approximately 1000 fume hoods on campus, this represents a significant fraction of campus energy use and therefore provided the motivation for the audit. The focus of the study was to investigate measures in which energy could be saved by identifying unnecessarily over-ventilated laboratories. Traditionally, it was assumed that hazardous chemicals used in laboratories (carcinogens, etc.) presented an elevated health risk that should be addressed via increased ventilation. Conventional wisdom has recently been scrutinized by scientific studies proving that in fact the improvement in air quality is negligible past a certain threshold of Air Changes per Hour (ACH). Likewise, increased fume hood ventilation rates may cause turbulent eddies and disrupt the ideal air containment strategy within the hood which may decrease worker safety. The following are four specific measures that were evaluated: (1) Decreased Air Change Rates (Unoccupied Night Setback with Manual Occupancy Override) (2) Low-Flow Fume Hood Retrofit (3) Reduce Constant Air Volume (CAV) Fume Hood Face Velocity to 90fpm (4) Implement Variable Air Volume (VAV) Fume Hood Alarms These measures were evaluated where applicable in the following buildings: -Chemical and Biological Engineering Building (CHBE) -Advanced Materials Processing and Engineering Laboratory (AMPEL) – Brimacombe Building -Earth and Ocean Sciences – Main (EOSM) -Chemistry Centre, D-Block (CHEM D) The potential reduction of fume hood face velocity was also extrapolated to the entire campus for a general assessment of how much energy could be saved. Table 9 in Section 4.3 neatly summarizes the important parameters for each energy-savings measure. Energy cost savings were estimated using a rate that included the cost of heating, cooling, and mechanically moving a cubic foot per minute (CFM) of air per annum. Based on current energy and carbon tax costs, the rate used was $2.69/(CFM·yr). The study concluded that nearly all projects are financially viable with the exception of low-flow fume hood retrofits that have a capital cost too high to be able to regain in energy savings in a reasonable amount of time. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
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 ».