An overview of studies to assess the thermal and hygrothermal performance of highly insulated and zero energy ready wall assemblies
Bibliographic record
Abstract
A key component of energy efficient homes in the ever challenging climate of Canada is the highly insulated and well-designed wall assembly. Over the years, residential walls have been constructed using increasingly more insulation. The increased levels of insulation have offered a major opportunity to reduce heat losses in homes thereby significantly improving their energy efficiency and have thus permitted compliance with requirements for high performance housing standards such as those for ENERGY STAR, R-2000, Net-Zero Energy Ready homes and homes conforming to the Passive House Canada concept. However given the use of higher insulation levels, homebuilders face many challenges with the issues that arise from changes in traditional construction practice, in the case of this paper being concerned with the overall moisture performance, and hence durability, of wall assemblies. Canadian building code authorities also require proven evidence that highly insulated wall systems will not be adversely affected by increases to insulation levels given the many different Canadian climates in which they are expected to perform over the long term. Building code authorities are also concerned with the possible effects of climate change on building design, and consequently, there is a growing need for information related to the resilience of wall assemblies for use in high performance housing and small buildings. Several studies have been undertaken in recent years to demonstrate the thermal and hygrothermal performance of highly insulated wood frame wall assemblies and to determine whether these walls perform as well as or better than NECB compliant walls when subjected to Canadian climate extremes.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.002 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".