R103 → R113

Irreversible heat-transfer analysis and Thermal Matching positioning

Focused development of irreversible heat-transfer analysis and sharper scientific positioning of Thermal Matching.

Principal developments

• Finite-ΔT T–Q and entropy-generation analyses were developed for irreversible heat transfer, relating medium and reservoir trajectories, finite conductance and local temperature differences to the reversible limit.
• Reversible-limit behaviour and gliding-temperature fuel concepts expanded comparison of heat–temperature interactions without premature reduction to one representative temperature.
• Thermal Matching boundaries separated established heat-exchanger, exergy and cycle-analysis techniques from the proposed coordination of temperature trajectories and benchmark constraints.
• Companion-book architecture and domain boundaries broadened, assigning clearer roles to foundations, applications, education and software while preserving consistency.