Annex
C Reference FLUXUS F502TE
2020-05-29, UMFLUXUS_F502TEV1-5EN
158
C.2 Typical roughness values of pipes
The values are based on experience and measurements.
C.3 Typical properties of selected fluids at 20 °C and 1 bar
material absolute roughness [mm]
drawn pipes of non-ferrous metal, glass, plastics and light metal 0…0.0015
drawn steel pipes 0.01…0.05
fine-planed, polished surface max. 0.01
planed surface 0.01…0.04
rough-planed surface 0.05…0.1
welded steel pipes, new 0.05…0.1
after long use, cleaned 0.15…0.2
moderately rusted, slightly encrusted max. 0.4
heavily encrusted max. 3
cast iron pipes:
bitumen lining > 0.12
new, without lining 0.25…1
rusted 1…1.5
encrusted 1.5…3
fluid (display) explanation sound speed
[m/s]
kinematic viscosity
[mm²/s]
density
[g/cm³]
Ammonia(NH3) ammonia (NH
3
) 1386 0.2 0.6130
BP Transcal LT BP Transcal LT 1365 20.1 0.8760
BP Transcal N BP Transcal N 1365 94.3 0.8760
Glycol glycol 1665 18.6 1.1100
20% Glycol / H2O glycol/H
2
O, 20 % 1655 1.7 1.0280
30% Glycol / H2O glycol/H
2
O, 30 % 1672 2.2 1.0440
40% Glycol / H2O glycol/H
2
O, 40 % 1688 3.3 1.0600
50% Glycol / H2O glycol/H
2
O, 50 % 1705 4.1 1.0750
Mobiltherm 594 Mobiltherm 594 1365 7.5 0.8730
Mobiltherm 603 Mobiltherm 603 1365 55.2 0.8590
R134 Freon R134 Freon 522 0.2 1.2400
R22 Freon R22 Freon 558 0.1 1.2130
R407C R407C 493 0.14 1.1587
R410A R410A 455 0.12 1.0831
Shell Thermia B Shell Thermia B 1365 89.3 0.8630
Water water 1482 1.0 0.9990
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