Hydronic root zone temperature control system for a Chinese solar greenhouse
Why this work is in the frame
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Bibliographic record
Abstract
The mono-slope Chinese solar greenhouses (CSGs) are the main facilities for year-round vegetable production. A hydronic root zone temperature control system (HRZTCS) was tested to improve the greenhouse environment and increase production in a CSG. This system utilizes a chiller as the source of cooling, a flat-plate solar collector to collect solar heat as the heat source, and water as the heat exchange medium, which is pumped into the plant root zone using polyethylene piping with thermal insulation. In the summer experiment, the test areas T S and T D (T S represents a single cooling pipeline, T D represents double cooling pipelines) and a control area (CK) (without cooling) were established. In the winter experiment, trial areas T S and T N (where N and S represent north and south, respectively, with double heating pipelines) and a control area (CK) were established. The HRZTCS achieved a cooling heat-transfer efficiency of 74 % in summer and a heating heat-transfer efficiency of 60.7 % in winter. The coefficient of system performance (COP) of the refrigeration system was 6.2–7.3, effectively reducing the root zone temperature by 5.9–7.5 °C. The temperature was controlled at 24.1–25.5 °C. In winter, the average heat collection efficiency was 66.1 %, resulting in a 5.5 °C increase in the root zone temperature. HRZTCS had a positive impact on the root environment of tomatoes, promoting tomato yield and improving survival, thereby significantly extending the plant growth season of CSGs.
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.
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