Design of air conditioning units with high performance parameters and low cost

Presents several methods of reducing cost of air conditioning units. With an air conditioning unit as testing object, analyses the performances of the unit with the same cost by changing electric motors for both indoor and outdoor units, electric expansion valve, capillary and condenser. Tests and compares the performances of four combined schemes. Results show that the performance value is higher in scheme where indoor unit with DC electric motor, outdoor unit with AC electric motor, two-row condenser, and capillary are applied.