Comparison of combined heat and power systems using an organic Rankine cycle and a low-temperature heat source
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Bibliographic record
Abstract
Two combined heat and power (CHP) systems using an organic Rankine cycle with R134a and a source at 100°C are modeled. The vapor generator pressure which maximizes the specific (i.e. per unit mass flowrate of the heat source) net power output is determined for different values of the specific heat load and a characteristic temperature difference DT related to the temperature pinch of the heat exchangers. The optimal trade-offs between power and heat outputs are defined and explained for two CHP systems. The results show that both systems generate less mechanical power than the heat delivered to the heating load and that a higher fraction of the heat source is used as the heating load increases. The effects of the specific heat load and of DT on the total thermal conductance, the total exergy destruction and other variables are presented.
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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