What is the bus air conditionier?
The A/C Installed on the bus is bus air conditioner which is very important for driver and passenger comfort of trip.
Bus air conditioner key parts: compressor, condenser, evaporator, piping system and electronic control system.
Bus air conditioning unit condenser:
The condenser is a heat exchange device that condenses the high-pressure and high-temperature refrigerant gas discharged from the compressor into a liquid state after releasing heat through it.
Bus air conditioning unit evaporator:
The evaporator is a device that absorbs heat and vaporizes the refrigerant that has been throttled by the expansion valve to achieve the cooling effect.
What role does Bus HVAC System play?
Fresh air : The air conditioner can circulate fresh air, reduce dust, carbon dioxide, bacteria etc, providing passengers with a better environment.
More comfortable trip : In hot summer or cold winter, bus air conditioning controls the bus temperature to make it comfortable for the human body, improving the passenger riding experience.
How does the Bus HVAC system work?
The work of the bus air conditioning unit is divided into four processes.
Compression process: It absorbs heat in the evaporator and turns it into a low-temperature and low-pressure gaseous refrigerant. After being sucked and compressed by the compressor, it turns into a high-temperature and high-pressure gaseous refrigerant and is discharged into the condenser.
Condensation process: After compression process, the gaseous refrigerant dissipates heat to the surrounding ambient air through the condenser radiator under the action of the condenser fan, and at the same time condenses into high-temperature and high-pressure liquid refrigerant.
Throttling process: After condensation process the liquid refrigerant passes through the liquid receiver and filter dryer, it is throttled to cool down and depressurize through the expansion valve, and becomes a mixture of low-temperature and low-pressure liquid and gaseous refrigerant and enters the evaporator.
Evaporation process: The mixture of low-temperature and low-pressure liquid gaseous is vaporized in the evaporator. Then it absorbs the heat of the air in the cabin to make the cabin cool by the evaporator fan and at the same time precipitates condensation water. After absorbing heat, the refrigerant evaporates into low-temperature and low-pressure gaseous refrigerant, which is sucked into the compressor and then compressed to complete a refrigeration cycle.
