Essential thermodynamic formulas, heat transfer equations, airflow relations, pressure conversions, and efficiency metrics for HVAC/R field engineers.
Sensible heat (Q_s = 1.08 × CFM × ΔT), Latent heat (Q_l = 4840 × CFM × ΔW), Total heat (Q_t = 4.5 × CFM × Δh), and duct velocity formulas.
Superheat (T_suction - T_sat), Subcooling (T_sat - T_liquid), Compression ratio, COP to EER conversion (EER = 3.412 Ă— COP), and enthalpy formulas.
