A Comparative Study of Leakage Characteristics between an Under Floor Air Distribution System and an Over Head Air Distribution System
Why this work is in the frame
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Bibliographic record
Abstract
This research aims at quantifying the leakage occurring in Under Floor Air Distribution (UFAD) systems and Over Head Air Distribution (OHAD) systems. The study also classifies the leakage occurring in the different systems into Category 1 leakage and Category 2 leakage. The study was performed between a plenum supply UFAD system (having a maximum flow rate of 1272 m3/h), a ducted supply UFAD system (having a maximum flow rate of 286 m3/h) and an OHAD system (having a maximum flow rate of 2004 m3/h). Results show that in plenum supply UFAD systems, 5.9% and 14.8% of the volume of air supplied by the Air Handling Unit (AHU) is attributed to leakage when the AHU is running at 50% and 100% fan speeds respectively. In ducted supply UFAD systems however, the leakage drops to 2.1% and 5.6% respectively at 50% and 100% AHU fan speeds. A ducted supply UFAD system in comparison to a plenum supply UFAD system lowers leakage by 62.2% when the AHU is operating at 100% fan speed and by 64.4% when the AHU is operating at 50% fan speed.
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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 | 0.001 | 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 | 0.001 |
| 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 it