Calculator · Thermal Engineering
Overall Heat-Transfer Coefficient
Hot convection, plane-wall conduction and cold convection with one explicit common reference area.
Inputs
Results
| Hot convection | 0.02 K/W |
|---|---|
| Wall conduction | 0.125 K/W |
| Cold convection | 0.05 K/W |
| Total resistance | 0.195 K/W |
| Overall U · common area A | 2.5641 W/(m²·K) |
| Conductance UA | 5.1282 W/K |
| Reference area | 2 m² |
Assumptions
- · Plane wall; one common reference area A on both sides. No cylindrical-area equivalence or inferred fouling.
Explore in the Lab
Open in Heat Exchanger Lab
Transfers UA only; inlet temperatures and capacity rates are editable example streams, not inferred from the wall.
Technical reference
Rtotal = 1/(hhA) + L/(kA) + 1/(hcA)
UA = 1/Rtotal
U = UA/A
Single-phase constant-capacity streams; parallel or counterflow only.
LMTD uses known outlets; no underdetermined state is guessed.