Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems

Table 1

Comparison of 𝜆_𝑡𝑠 and 𝜆_𝐾.

Re𝑠	𝜆𝑡𝑠	𝜆𝐾	Differences
2991.3548	0.03788	0.04093	0.0744
3510.366	0.03630	0.03894	0.0678
5196.7925	0.03269	0.03458	0.0547
7279.2964	0.02988	0.03138	0.0479
8742.9997	0.02845	0.02981	0.0456
10645.961	0.02699	0.02824	0.0442
12646.107	0.02578	0.02698	0.0445
14729.198	0.02475	0.02591	0.0447
16838.074	0.02388	0.02503	0.0458
18992.198	0.02313	0.02428	0.0475
20787.17	0.02258	0.02372	0.0482
23585.573	0.02183	0.022996	0.0508
26976.342	0.02106	0.02224	0.0531
30773.603	0.02033	0.02155	0.0566
34125.68	0.01978	0.02101	0.0587
36318.57	0.01945	0.02071	0.0608
43105.47	0.01858	0.01989	0.0659
50137.31	0.01785	0.01921	0.0708
58836.33	0.01710	0.01852	0.0767
67352.30	0.01649	0.01797	0.0824

Note: 𝜆_𝑡𝑠: frictional loss factor of the raw sewage in turbulent flow; 𝜆_𝐾: frictional loss factor of Karman formula in turbulent flow.