Acoustics and Architecture

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Q ṁ Pipe Size DP/m v l Fitting Type Number z 1/2rv2 DP
Pipe Section kW kg/s mm Pa/m m/s m Pa Pa
Flow Pipe work
01-02 80 0.96 32 289 0.96 1.5 Pipe Loss 434
Branch 1 0.04 461 18
Total Loss 452
02-03 40 0.48 25 313 0.84 8.4 Pipe Loss 2629
Contraction 1 0.25 353 88
Branch 1 0.63 353 222
Total Loss 2940
03-04 20 0.24 20 280 0.69 13.3 Pipe Loss 3724
Contraction 1 0.23 238 55
Bends 3 0.92 238 657
Total Loss 4436
Return Pipe work
01-02 80 0.96 32 289 0.96 1.5 Pipe Loss 433.5
Branch 1 0.52 461 240
Total Loss 673
02-03 40 0.48 25 313 0.84 8.4 Pipe Loss 2629.2
Expansion 1 0.064 353 23
Branch 1 0.43 353 152
Total Loss 2803
03-04 20 0.24 20 290 0.96 13.3 Pipe Loss 3857
Expansion 1 0.076 461 35
Bends 3 0.92 461 1272
Balancing Valve 1 12 461 5530
Total Loss 10693
Flow Temperature 80 °C Total Flow Δp 7,827 Pa
Return Temperature 60 °C Total Return Δp 14,170 Pa
Temperature Delta 20 °C Combined Δp 21,997 Pa
Specific Heat of water 4.2 kJ/kgK