Oil Pipes - Heat Loss

Heat loss in W/mK and Btu/hr ft degF from oil tubes ranging temperatures 10 - 38 degC (50 - 100 degF).

Nominal bore (mm)Up to 10°C (50°F) - W/mK (Btu/hr ft °F)10-27°C (50-80°F) - W/mK (Btu/hr ft °F)27-38°C (80-100°F) - W/mK (Btu/hr ft °F)
150.7 (0.4)0.9 (0.5)0.9 (0.5)
200.7 (0.4)1.1 (0.6)1.1 (0.6)
250.8 (1.4)1.2 (0.7)1.4 (0.8)
402.1 (1.6)1.7 (1.0)1.9 (1.1)
502.8 (1.6)2.1 (1.2)2.2 (1.3)