Dynamic Heating System of Multiphase Flow Digester by Solar-Untreated Sewage Source Heat Pump

Table 5

Basic values of the parameters for the sewage double-pipe heat exchanger.

Parameter	Unit	Value
Inner pipe radius	mm	23
Outer pipe radius	mm	39
Thickness of inner pipe wall	mm	2
Thickness of outer pipe wall	mm	3
Average inlet/outlet temperature of chilled water	K	280.15/285.15