Bus Air Con Supplier Analysis Future HVAC Structure Trends in Buses.
To improve air conditioning and heating in new energy buses, HVAC structures are bound to evolve. This will enhance passenger comfort, reduce power consumption and emissions, protect the health of drivers and passengers, and achieve energy conservation and emission reduction. Let’s explore the main development trends of bus air conditioning HVAC systems.
Bus Air Con Supplier Analysis – Main Structural Development Trends: The technological evolution of heating, ventilation, and Bus Air Con Supplier shows a gradual trend towards integration, evolving from the previous three-box and two-box designs to the currently common single-box structure.
The single-box structure has clear advantages and disadvantages. Its main advantage is reduced manufacturing costs and installation time due to overall uniformity. The undivided nature of the single box also allows for more flexibility in the placement of the heat exchanger core, and relatively improved airtightness.
However, its disadvantages lie in the increased difficulty and precision in designing the overall pipe cross-section, and the increased challenges in later maintenance and core replacement after installation.
Bus Air Con Supplier Analysis – Evaporator Evolution Trends
The trend of “high precision and micro-scale” evolution is also reflected in the evolution of evaporator technology. Advanced designs such as microchannel structures, lightweight materials, and improved energy efficiency have reduced the evaporator’s volume by nearly two-fifths while simultaneously increasing efficiency.
Bus Air Con Supplier Analysis – Filter Development Trends
The main function of filters is to optimize the internal environment of a vehicle, reducing the possibility of dust and other pollutants from roads or other external environments entering the vehicle’s internal air circulation, thus protecting the health of the driver and passengers.
Filter development can be divided into three stages:
① Particulate Filtration Stage: Filters in this stage are mainly composed of synthetic fibers or combinations thereof with impregnated pulp. Particulate filters are a preliminary filtration process, with filter molecules having a diameter of approximately 0.1-100 micrometers.
② Activated Carbon Filtration Stage: Activated carbon filtration is the second stage of development based on particulate filtration. The main function of filters in this stage is to purify and adsorb SO2 and NO gases from the air, building upon particulate filtration.
③ Hybrid Filtration Stage: Hybrid filtration refers to a new type of filtration that combines particulates with activated carbon. Compared to the first stage of particulate matter filtration and the second stage of activated carbon filtration, composite filters integrate and enhance the independent advantages of both stages, reducing the required airflow volume while strengthening filtration performance.
Currently, composite filters on the market are mainly divided into two types: integrated and combined structures. Integrated structures require replacement of the entire unit, while combined structures can be disassembled and installed independently depending on usage.
Bus Air Con Supplier Analysis – Development Trends of Ventilation Systems and Air Purification Equipment
Taking automatic recirculation as an example, it is mainly controlled by environmental sensors. When toxic gases in the air, such as carbon monoxide and carbon dioxide, are detected by the sensors, the recirculation mode is automatically activated to isolate the passenger compartment from the toxic gases outside.
Regarding current ordinary air conditioning systems, in winter, to prevent windshield fogging, the air conditioning usually uses external circulation mode, which introduces fresh outside air into the vehicle while expelling hot air outside, resulting in heat loss and a drop in interior temperature.
For this reason, the new concept of a two-layer air conditioning system has been proposed.
This concept typically refers to dividing the air conditioning system into upper and lower layers. In winter, the fresh air heated in the upper layer is directed to the defogging window and then directly exhausted outside the vehicle from the top. Meanwhile, the warm air in the lower layer uses an internal circulation system to circulate the warm air in the lower part of the interior, thereby reducing heat loss due to ventilation.
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