Research Article
Study on Storage Conditions and Suitability Zoning of Shallow Floor Energy in Nanchang City
Table 4
Evaluation table of factors affecting the suitability of the ground source heat pump.
| Element indicators | Grading level | Assignment of the value |
| Aquifer effluent capacity (m3/d) | <10 | 1 | 10~100 | 3 | 100~1000 | 5 | 1000~5000 | 7 | ≥5000 | 9 |
| Effective aquifer thickness (m) | <10 | 1 | 10~20 | 3 | 20~40 | 5 | 40~60 | 7 | ≥60 | 9 |
| Single-well recharge capacity of the aquifer (m3/d) | <50 | 1 | 50~500 | 3 | 500~1000 | 5 | 1000~2000 | 7 | ≥2000 | 9 |
| Groundwater depth (m) | <5, 100~200 | 1 | 5~10, 80~100 | 3 | 10~15, 50~80 | 5 | 15~20, 30~50 | 7 | 20~30 | 9 |
| Permeability coefficient of formation (m/d) | <5 | 1 | 5~10 | 3 | 10~20 | 5 | 20~50 | 7 | ≥50 | 9 |
| Overexploitation of groundwater | Groundwater volume is abundant | 9 | The groundwater volume is average | 5 | Overdraft | 1 |
| Underground water quality | Class I water | 9 | Class II water | 7 | Class III water | 5 | Class IV water | 3 | Class V water | 1 |
| Groundwater scale degree | Very few | 9 | Less often | 7 | More than that | 5 | A lot of it | 1 |
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