Industrial IP54/IP65 Control-Cabinet Heat-Rise (IEC 60890), Filter-Fan & AC-Unit Sizer

Deterministic IEC 60890 enclosure position-weighted effective cooling surface A_e + convective wall k*A_e*Delta_T balance & sensible air-mass flow V_dot = 3.1 * P_loss / Delta_T_air with altitude correction engine (.json, .csv, .pdf) built for Rittal, Pfannenberg, Schneider Spacial, STEGO — zero-upload ephemeral Wasm RAM execution.

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