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Record W4386157097 · doi:10.32920/24033795.v1

An Assessment of the Thermal Performance of Wood Curtain Wall Frames

2023· preprint· en· W4386157097 on OpenAlexaff
Yannick Choquet

Bibliographic record

Venuenot available
Typepreprint
Languageen
FieldSocial Sciences
TopicEnergy and Environmental Systems
Canadian institutionsCarleton UniversityToronto Metropolitan University
Fundersnot available
KeywordsCurtain wallFraming (construction)Materials scienceStructural engineeringThermalComposite materialEngineeringMeteorologyPhysics

Abstract

fetched live from OpenAlex

The thermal performance of three different wood framed curtain walls was analyzed and compared to the performance of two thermally broken aluminum curtain walls and one fiberglass curtain wall. U- values for the framing members and overall curtain wall, as well as condensation resistance values were obtained as per NFRC 100 through THERM/WINDOW simulation. In addition, area weighted U-value calculations were done to assess the thermal impact that glass supports had on the frame performance. Finally, whole building energy simulation was done to compare the relative performance of the system analyzed based on the building size. On average, wood curtain wall frames were found to have lower U- values than aluminum curtain wall frames and FG curtain wall frames by 59% and 14 % respectively. In addition, curtain wall sections were found to have lower U-values with wood frames than aluminum frames by an average of 14%. On the other hand, the average condensation resistance of the wood curtain walls was found to be 12% lower than aluminum curtain walls and 3% lower than FG curtain walls. The best performing curtain wall for each frame material were also modelled in OpenStudio/EnergyPlus on two different buildings and the wood curtain wall produced a TEDI that was on average 7% lower than the aluminum curtain wall. Moreover, the glass supports used in wood curtain walls were found to have a much lower impact on the U-value of the frame than the setting chairs used in aluminum curtain walls. Average overall curtain wall U-values and TEDI for the wood and FG curtain walls were found to be virtually the same.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.008

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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 head0.028
GPT teacher head0.335
Teacher spread0.307 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations1
Published2023
Admission routes1
Has abstractyes

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