초록 ▼

A heat pump air conditioning system with an active digital control of the refrigeration cycle thereof to improve the coefficient of performance. The system can incorporate solar collectors in parallel with the outdoor heat exchanger and a water storage tank in the system to maximize the utilization

A heat pump air conditioning system with an active digital control of the refrigeration cycle thereof to improve the coefficient of performance. The system can incorporate solar collectors in parallel with the outdoor heat exchanger and a water storage tank in the system to maximize the utilization of solar heating and nocturnal cooling as an additional heat source or heat sink means when such are available to further improve the coefficient of performance. The system also incorporates individual temperature control mechanisms in each room to circulate an adequate amount of water from the storage tank in accordance with the heat demand of each room, thus contributing to realization of an energy efficient central air conditioning system.

대표청구항 ▼

A heat pump air conditioning system, comprising: a refrigeration cycle having a compressor for compressing a refrigerant, means for exchanging heat including an evaporator for evaporating said refrigerant and a condenser for condensing said refrigerant, and an expansion valve for controlling passage

A heat pump air conditioning system, comprising: a refrigeration cycle having a compressor for compressing a refrigerant, means for exchanging heat including an evaporator for evaporating said refrigerant and a condenser for condensing said refrigerant, and an expansion valve for controlling passage of said refrigerant; first means for measuring an ambient temperature; second means for measuring a temperature of said refrigerant; third means for measuring a pressure of said refrigerant; and controlling means receiving the measured data of said ambient temperature, said temperature of said refrigerant and said pressure of said refrigerant for controlling a rotational speed of said compressor and an opening of said expansion valve in accordance with said measured data to maximize a coefficient of performance of said refrigeration cycle.