Research Article
Optimal Hierarchical Decision-Making for Heat Source Selection of District Heating Systems
Table 6
The annual operation costs of alternatives.
| | Items | Oil-fired
boiler | Gas-fired
boiler | Coal-fired
boiler | Ground source
heat pump | Water source
heat pump |
| | The number of installed heat sources | 4 | 4 | 5 | 6 | 6 | | Primary energy consumption (104 kg/year) | 267.68 | 326.92 (m3) | 572.13 | — | — | | Fuel cost (104 RMB/year) | 1338.40 | 745.40 | 514.90 | — | — | | Power consumption for main equipment (104 KWh/year) | 16.04 | 16.04 | 8.13 | 788.27 | 643.65 | | Power cost (104 RMB/year) | 9.62 | 9.62 | 4.88 | 442.96 | 386.19 | | Power consumption for accessory equipment (104 KWh/year) | 32.07 | 32.07 | 42.26 | 106.62 | 117.01 | | Power cost of accessory equipment (104 RMB/year) | 28.86 | 28.86 | 38.034 | 95.96 | 105.31 | | Wages and welfare (104 RMB/year) | 7.92 | 7.92 | 7.92 | 3.96 | 3.96 | | Maintenance cost (104 RMB/year) | 40.95 | 40.45 | 42.70 | 68.81 | 59.59 | | Depreciation of equipment (104 RMB/year) | 81.9 | 80.9 | 85.4 | 137.63 | 119.18 |
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