EngiRef / Thermodynamics Engineering Formula
Overall Heat Transfer Coefficient
Overall Heat Transfer Coefficient: Combined convection-conduction-convection resistance. A Heat Transfer formula in thermodynamics engineering.
Heat Transfer
Specification
- Name
- Overall Heat Transfer Coefficient
- Discipline
- thermodynamics
- Category
- Heat Transfer
- LaTeX
- \frac{1}{U} = \frac{1}{h_1} + \frac{t}{k} + \frac{1}{h_2}
- Description
- Combined convection-conduction-convection resistance
- Conditions
- Plane wall with convection on both sides
- Can solve for
- U
- Tags
- overall, heat, transfer, coefficient, resistance
Variables
| Symbol | Name | Unit | Si Unit |
|---|---|---|---|
| U | Overall HTC | W/(m²·K) | W/(m²·K) |
| h₁ | Convection Coeff 1 | W/(m²·K) | W/(m²·K) |
| h₂ | Convection Coeff 2 | W/(m²·K) | W/(m²·K) |
| t | Wall Thickness | m | m |
| k | Thermal Conductivity | W/(m·K) | W/(m·K) |