Where, a w – air flow rate through the evaporator, m3/s;
a1 h – air enthalpy inlet the evaporator, kJ/kg;
a2 h – air enthalpy outlet the evaporator, kJ/kg;
a v – air specific volume in the cold room, m3/kg;
a d – moisture content of air in the cold room, kg/kg;
pw c – specific heat of water, kJ/(kg K);
2 t