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Record W1538298958 · doi:10.1002/9781118991978.hces124

Limits to Efficiency for Energy Utilization

2015· other· en· W1538298958 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueHandbook of Clean Energy Systems · 2015
Typeother
Languageen
FieldEnergy
TopicGlobal Energy and Sustainability Research
Canadian institutionsOntario Tech University
Fundersnot available
KeywordsExergyEfficient energy useExergy efficiencyLimitingComputer scienceRange (aeronautics)Energy (signal processing)Energy conservationProcess engineeringEnvironmental economicsResource efficiencyEnvironmental scienceEngineeringMathematicsEconomicsMechanical engineeringStatistics

Abstract

fetched live from OpenAlex

Abstract Designing efficient energy systems is a significant challenge. In a world with finite natural resources and large energy demands, it is important to understand not only actual efficiencies but also limits to efficiency, as the latter identify margins for efficiency improvement. Energy analysis methods, which yield energy efficiencies, do not provide limits to efficiency. To obtain meaningful and useful efficiencies for energy systems, and to clarify losses, exergy analysis is a beneficial and useful tool. Exergy efficiencies establish upper limits to efficiency and provide a measure of approach to ideality. This is the focus of this article. Limits to efficiency are subject to two constraints, which are often not clearly understood: theoretical and practical. The energy utilization of systems as small as a device to as large as a country can be assessed using exergy analysis to gain insights into efficiency; examples of the benefits of applying exergy to such examples are given. Furthermore, the insights gained through the exergy analyses presented here in terms of meaningful efficiencies and quantified margins for improvement are examined to determine their range of applicability. Exergy analyses are shown to be able to provide useful information about devices and regions such as a country, including limiting and actual efficiencies, and can consequently help achieve savings in resource use through efficiency, conservation, and other measures. Exergy analyses also help identify margins for improvement, and thus are useful for informing energy planning and research.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.239
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0010.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.045
GPT teacher head0.300
Teacher spread0.255 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it