Heat Loss calculation in insulated thermal oil pipes
Description
This spreadsheet calculates heat loss in an insulated thermal oil pipe system. Let me break down the key calculations:
- System Parameters:
- 8-inch nominal diameter pipe, 1000 feet long
- Thermal oil flowing at 100 lbm/s (45.4 kg/s)
- Oil temperature: 284°F (140°C) inlet
- Ambient air: 60°F (15.6°C), 20 ft/s velocity
- Calcium silicate insulation: 2 inches thick
- Key Calculations:
- Reynolds number (Re) = 133,126 (turbulent flow)
- Overall heat transfer coefficient (U) = 0.94 W/m²K
- Total heat loss (Q) = 36 kW
- Temperature drop = 0.7°F (inlet to outlet)
The calculation uses:
- Convective heat transfer (air)
- Conductive heat transfer (insulation)
- Mass flow energy balance (Q = mCpΔT)
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Comments: 1
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johndoyle-admin
23 days ago
Thanks for sharing your calculation! I have extended your XLC Pro subscription by 3 months by way of thanks.