| 摘要 |
A hybrid heat pump system is provided to maximize thermal efficiency and reliability in four seasons by using automatic control algorithm based on the control of PID(Proportional Integral Derivative). A hybrid heat pump system comprises a compressor(100), a condenser(200), an evaporator(600), first and the second pressure sensors, and a microcontroller. The compressor receives refrigerant of low temperature and low pressure and produces refrigerant of high pressure and high temperature. The condenser performs the heat exchange according to the condensation of the refrigerant of high pressure and high temperature. The evaporator evaporates the refrigerant of low temperature and low pressure and absorbs external heat. The first and the second pressure sensors are installed at an inlet and an outlet of the compressor. In a heating mode, a microcontroller variably controls the condensation amount of a condenser corresponding to high pressure signals of the first pressure sensor and variably controls the RPM(Revolution Per Minute) of a fan of the evaporator corresponding to low pressure signals of the second pressure sensor. In a cooling mode, the microcontroller variably controls the condensation amount of the condenser corresponding to low pressure signals of the second pressure sensor and variably controls the RPM of the fan of the evaporator corresponding to high pressure signals of the first pressure sensor.
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