Temperature effectiveness (sensible) Temperature effectiveness compares supply temperature change to the maximum possible: epsilon_T = (T_supply_out - T_supply_in) / (T_exhaust_in - T_supply_in) This is the number a sensible plate reports, and it is what most generic "efficiency" labels mean. Dew-point effectiveness (total / enthalpy) For an enthalpy wheel or membrane, moisture matters, so effectiveness is […]