Heat pump heating-cooling system using hybrid heat source and control method thereof

A heat pump heating-cooling system using hybrid heat sources of air, ground water, brine and an inline heater, comprising:

• 1) a circulating energy source part for generating and transferring thermal energy through a water-refrigerant heat exchanger into a heat storage part, wherein the circulating energy source part comprises:
• a compressor for compressing a refrigerant,
• a condenser and water-refrigerant heat exchanger for transferring the thermal energy into the heat storage part,
• a brine supplying pipe for supplying thermal energy for both evaporation and defrost, and
• an evaporator for evaporating the refrigerant;
• 2) the heat storage part containing a heat storage tank, wherein the thermal energy from the circulating energy source part is supplied and stored in a water medium;
• 3) a 4-way fan coil unit, wherein the thermal energy in heated water is exchanged and released from the 4-way fan coil unit;
• and
• 4) a control panel for controlling the operation conditions of normal and/or defrost mode operation;
• wherein, for the defrost mode operation, the operation of the evaporator is temporally suspended, 15˜20° C. of brine heated by both the ground water heat through a brine heat exchanger and the inline heater is provided to the brine supplying pipe installed in surroundings of the evaporator to remove the frost outside of the evaporator, and −3˜5° C. of brine is discharged after defrost.