Latent Heat Thermal Capacitor in Heat Exchangers- a Computational Investigation
Bibliographic record
Abstract
The main objective of this study to evaluate the performance of phase change material (PCM) in smoothing outlet temperature of double tube heat exchanger subjected to fluctuating inlet temperature. A computational fluid dynamics (CFD) model is formulated, validated and utilized to investigate the conjugate heat transfer between heat transfer fluid (HTF) and PCM inside the heat exchanger. Three organic-based PCMs, i.e. n-octadecane (C18H38), n-eicosane (C20H42) and myristic acid (CH3(CH2)12COOH), were investigated to study the importance of PCM melting temperature on the performance of the PCM based thermal capacitor. The effect of heat transfer fluid inlet Reynolds was evaluated as well. The result confirms the potential usage of PCM as smoothing device (thermal capacitor). Moreover, the outlet temperature fluctuation was found to decrease as the inlet Reynolds number increases. Selecting PCM with appropriate melting points is crucial in ensuring successful application of PCM as thermal capacitor for specific application.
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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".