Page actions
instrument cross-check / verified-workflow-definition
Heat-Transfer Path
Conduction, convection, radiation composed — with the LMTD/NTU double-solve.
Status: observedLifecycle: verified-workflow-definition
Goal
Conduction, convection, radiation composed — with the LMTD/NTU double-solve.
Instrument chain
- 01Fourier Conduction (Plane Wall) Calculator
walls
VERIFIED - 02Cylindrical/Spherical Conduction Resistance Calculator
pipes/shells
VERIFIED - 03Composite Wall R-value / U-value Calculator
assemblies
VERIFIED - 04Radiation Heat Transfer Calculator
radiation
VERIFIED - 05Fin Effectiveness/Efficiency Calculator
extended surfaces
VERIFIED - 06Biot Number / Lumped Capacitance Validity Check
model gate
VERIFIED - 07Overall Heat Transfer Coefficient (U) Calculator
combined U
VERIFIED - 08LMTD Heat Exchanger Calculator
exchanger method 1
VERIFIED - 09NTU-Effectiveness Heat Exchanger Calculator
exchanger method 2
VERIFIED - 10Heat Sink Thermal Resistance Calculator
electronics tie-in
VERIFIED
Handoffs and cross-checks
Resistances sum to U; U×A feeds both LMTD and NTU on the same exchanger.
PointGuard stance
Solve every exchanger BOTH ways — LMTD and NTU must agree on q; that redundancy is the point (would have caught the t4-180 halving).
Sources and evidence
These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.
INSTRUMENT_COMBOS.jsonVERIFIED_LEDGER.json