Impact of Adiabatic and Condenser Lengths on the Thermal Performance of Flat Pulsating Heat Pipes
Bibliographic record
Abstract
The present study experimentally investigates the influence of adiabatic and condenser length on the thermal performance of pulsating heat pipes (PHPs). Experiments are carried out on a multi-loop, dual-diameter flat PHP using acetone as a working fluid at a 40% filling ratio. To evaluate the effect of adiabatic length, three lengths of 0 mm, 50 mm, and 150 mm are tested, with the evaporator and condenser length fixed at 150 mm and 50 mm, respectively. Results indicate that the adiabatic section length has a negligible impact on the overall thermal performance of the PHP. On the other hand, to evaluate the effect of condenser length, the total PHP length is fixed at 250 mm with 150 mm of evaporator, while the condenser lengths of 20 mm, 50 mm, and 100 mm are tested. A consistent reduction in thermal resistance is observed with increased condenser length. This highlights its importance in improving heat rejection and promoting liquid return to the evaporator. The findings emphasize the significance of condenser length in enhancing thermal performance and the design flexibility offered by the adiabatic section suitable for real-world thermal applications.
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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 | 0.000 |
| 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 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".