Heat Exchanger Modelling for Solar Organic Rankine Cycle
Bibliographic record
Abstract
The paper presents work done on the development of a heat exchanger model suitable for incorporation into a low temperature solar thermal power cycle. In particular it presents the mathematical model comprising heat transfer, mass transfer, and convective heat transfer coefficients, and velocity and pressure drop correlations for single and two phase flows. The preliminary evaporator model is based on a counter flow double pipe configuration; the flow boiling process incorporates both convective and nucleate boiling. The shell side heat transfer fluid consists of ethylene glycol at 50 % concentration; the tube side fluid flow is modelled on four candidate working fluids pre-selected from previous stages of the research study. The evaporator model is implemented on the engineering equation solver platform; following on the computer simulation results a further proposal is made for conversion of the model design into a feasible shell-and-tube heat exchanger. The outputs of the model study are in the form of the rate of heat exchange, size and type of the heat exchanger, whilst ensuring that the pressure drops and fluid velocities are within acceptable limits.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".