Extending the Use of Welded Plate Heat Exchangers to Multi-Stream Applications
Bibliographic record
Abstract
Compabloc is a trademark of Alpha Laval and is one of the most efficient types of welded plate compact exchangers (WPHE). Their construction features and thermal performance make this technology suitable for application in a wide range of temperatures and pressures. This work focuses on the compabloc type of welded plate and presents a conceptual extension of the design to the case of multi-stream applications. WPHE units are finding wider application in heat recovery systems due to their construction features that enable them to operate at high temperatures and pressures. Besides, the corrugated surfaces employed by this type of units create high heat transfer performance at the expense of increased pressure drop which makes them transmit the required heat duty within a smaller exchanger size compared with conventional geometries. Their geometrical characteristics make it suitable for applications where more than two streams can meet their thermal duties within the same structure. This paper presents the design considerations for the use of compabloc exchangers that handle multiple streams. The multi-stream capabilities can be potentially used in the reduction of the number of heat exchanger units in heat recovery networks. The paper looks first at a thermohydraulic approach for the design of compabloc exchangers based on the full absorption of the pressure drop, then the methodology is extended to the case of multi-stream applications. The approach is demonstrated on a case study.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".