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International Journal of Photoenergy
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International Journal of Photoenergy
/
2015
/
Article
/
Tab 4
Research Article
Solar Thermal System Evaluation in China
Table 4
Operating efficiency of a heating resource using conventional energy.
Conventional
energy
Domestic
water
Space
heating
Thermal driven
cooling
Electricity
0.31
/
/
Coal
/
0.70
0.70
Natural gas
0.84
0.80
0.80