Potential of decentralized heat pumps to improve the financial viability of a solar district heating system with seasonal thermal storage
Bibliographic record
Abstract
This paper uses the Drake Landing Solar Community as a case study to assess the potential of including decentralized water-to-air heat pumps within a solar district heating system. A design exercise is performed using a component-based simulation program to assess the performance of different system configurations and design parameters, and a generic optimization tool to optimize the system life cycle cost. The selected economic parameters represent the current situation of the existing community in Alberta, Canada. The energy performance of the proposed configuration is assessed, as well as the life-cycle costs (capital and operating costs over 20 years). Different targets for solar fraction are assessed, and two types of solar collectors are compared (unglazed vs. glazed flat-plate collectors). The results show that decentralized heat pumps deliver life-cycle savings compared to a solar-only configuration for moderate solar fraction objectives. They also show that, with the selected assumptions and system configurations, the very high solar fraction achieved by the existing system cannot be matched.
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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 | 0.001 |
| 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 | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".