Mathematical Modeling and Testing of a Loop Heat Pipe Using a Two – Way Pressure Regulating Valve
Bibliographic record
Abstract
A loop heat pipe (LHP) is a heat transfer device that uses the vaporization of a working fluid to transfer heat from an evaporation section to a condensing section. The operating characteristics of a LHP with a two-way pressure regulating valve (PRV) is experimentally investigated using a flight-qualified LHP. Experiments suggest that an orifice within the PRV causes a premature start-up. It is determined that the LHP is unable to control the evaporator temperature to 31 roughly after 130 W under test conditions. The LHP is found to be more sensitive to changes in sink temperatures when operating at higher powers. A steady-state LHP model is developed and is found to compare well with experimental results. It is determined that modeling the effects of the PRV on the LHP operation is not feasible using measurements due to the extreme sensitivity of the model to small changes in fluid pressure.
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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".