Design optimization of parallel plate heat exchangers in thermoacoustic devices
Why this work is in the frame
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Bibliographic record
Abstract
Parallel plate heat exchangers of a thermoacoustic refrigerator with an acoustic driver and a heat-driven thermoacoustic refrigerator are optimized by using the second law of thermodynamics and the computer code DeltaE which solves the one dimensional wave equation in a geometry. In the first simulation by DeltaE, the blockage ratio of the heat exchangers is assumed equal to that of the stack. The porosity of the heat exchangers is optimized through the second law analysis and by assuming the plate thickness of the heat exchangers equal to their length. The optimized blockage ratio for the cold heat exchanger and ambient heat exchanger are estimated 0.56 and 0.345. The results show that with the optimized heat exchangers whose porosity is less than that of the stack, the overall performance of the thermoacoustic refrigerator is increased by 16%.
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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 | 0.000 | 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 | 0.000 |
| 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