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International Journal of Photoenergy
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International Journal of Photoenergy
/
2020
/
Article
/
Tab 7
/
Research Article
Dynamic Heating System of Multiphase Flow Digester by Solar-Untreated Sewage Source Heat Pump
Table 7
EER and operating energy income for the different biogas heating systems.
Index
System 1
System 2
System 3
System 4
System 5
Standard deviation
EER
1.01
6.37
3.19
3.19
3.19
1.92
(MJ d
-1
)
1.24
116.06
94.46
94.46
94.46
45.09