Research Article
Solar Thermal System Evaluation in China
Table 10
Test results for a solar space heating system during heating conditions.
| | Number | Solar irradiation | Useful heat gain | Energy consumed for
space heating | Energy consumption
for domestic water | Energy consumed of
conventional energy | Efficiency of solar
collecting system | Solar energy
fraction | | MJ/m2 | MJ | MJ | MJ | MJ |
| | 1 | 17.0 | 233.7 | 379.7 | 20.6 | 216.9 | 0.57 | 0.52 | | 2 | 12.6 | 173.9 | 361.1 | 15.9 | 247.3 | 0.57 | 0.41 | | 3 | 7.0 | 38.16 | 180.4 | 0.7 | 184.3 | 0.23 | 0.17 | | 4 | 22.1 | 288.3 | 360.0 | 5.8 | 157.7 | 0.54 | 0.65 |
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