| 摘要 |
<p>PURPOSE: An energy-saving HVAC system and a control method thereof are provided to automatically and proportionally control the rotation amount of a ventilation fan in real time. CONSTITUTION: An energy-saving HVAC system comprises a digital pressure switch(15), a microprocessor(31), and a speed controller(16). The digital pressure switch detects high-refrigerant pressure of a compressor(4) into current or voltage. A current refrigerant pressure value is input to the microprocessor. The microprocessor calculates a difference between minimum pressure and maximum pressure. A control signal corresponding to the difference is output to the speed controller.</p> |
