International Journal of Photoenergy / 2015 / Article / Tab 10

Research Article

Solar Thermal System Evaluation in China

Table 10

Test results for a solar space heating system during heating conditions.

NumberSolar irradiationUseful heat gainEnergy consumed for
space heating
Energy consumption
for domestic water
Energy consumed of
conventional energy
Efficiency of solar
collecting system
Solar energy
fraction
MJ/m2MJMJMJMJ

117.0233.7379.720.6216.90.570.52
212.6173.9361.115.9247.30.570.41
37.038.16180.40.7184.30.230.17
422.1288.3360.05.8157.70.540.65