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Record W1972101255 · doi:10.1063/1.4822051

Effects of surroundings snow coverage and solar tracking on photovoltaic systems operating in Canada

2013· article· en· W1972101255 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.
fundA Canadian funder is recorded on the work.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueJournal of Renewable and Sustainable Energy · 2013
Typearticle
Languageen
FieldComputer Science
TopicSolar Radiation and Photovoltaics
Canadian institutionsÉcole de Technologie Supérieure
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsOvercastPhotovoltaic systemSolar trackerTracking (education)Tracking systemAlbedo (alchemy)ElectricityEnvironmental scienceIrradianceSkySolar irradianceSnowSolar energyMeteorologyEngineeringOpticsElectrical engineeringPhysics

Abstract

fetched live from OpenAlex

This paper deals with demonstrating the energy performance of solar tracking photovoltaic (PV) systems in Canada. In this study, a grid connected stand-alone PV system has been designed and coupled with four different tracking systems: fixed horizontal, fixed tilted, single-axis tracking, and dual-axis tracking. The performance analysis of the systems focuses on the variation of array irradiance, electricity generation, and efficiency without considerations for economic impacts at this stage. The simulation results show that the dual-axis tracking array provides the best performance over a year. It receives 33% more solar radiation and generates 36% more electricity than the tilted system. On clear winter days, compared to the tilted system, the dual-axis tracking system produces 32% and 29% more electricity in high albedo and low albedo conditions, respectively. High albedo due to surroundings snow coverage has been found to cause an increase of 3.1%, 5.8%, and 7.9% in electricity production of the tilted, single-axis tracking, and dual-axis tracking system respectively, over a winter. The results of this research support the idea that tracking the sun is effective on clear days and could be counterproductive on overcast days. Therefore, in high albedo conditions, it is recommended to track the sun and stay fixed once the sky becomes overcast.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.784
Threshold uncertainty score0.962

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
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 head0.004
GPT teacher head0.181
Teacher spread0.177 · 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