Electric Bus Air Conditioner Features - knowledge you must ...

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Preface

The main function of Electric Bus Air Conditioner system is to maintain the temperature, humidity, air cleanliness and air flow in the cabin in a comfortable state. The air conditioning system is the second most energy-consuming component of an electric bus. Opening of the air conditioning system generally reduces the driving range by 25% to 30%. Therefore, when developing electric buses, it is necessary to focus on optimizing the design of the supporting air conditioning system. This can reduce air conditioning consumption and increase the purpose of bus travel.

TKT Electric Bus Air Conditioner

Electric Bus Air Conditioner features

The electric air conditioner on an electric bus has the following main characteristics compared to an ordinary air conditioning system.
1, the electric air conditioning system is installed on a moving vehicle, to withstand violent and frequent vibrations and shocks, requiring that each part of the electric air conditioning device structure should have sufficient strength to resist vibration and shock and good system airtight performance.
2, most of the electric buses are short-distance commuters, the ride time is short, coupled with the number of people riding in the vehicle, the product of relatively more heat, the relative heat load, requiring air conditioning with fast cooling, cooling function.
3, electric air conditioners use the DC power provided by the power battery, electric compressor with high efficiency, high reliability of control and easy maintenance.
4, the bus body insulation effect is poor, and the glass area is large, aggravating heat radiation, while there are two passengers in front and behind the bus, opening high frequency, resulting in serious convection inside and outside the vehicle.
5, the bus facilities inside the uneven height and seats, airflow distribution organization difficulties, it is difficult to achieve uniform airflow distribution.

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Electric Bus Air Conditioner Refrigeration cycle principle

In principle, the system is no different from ordinary air conditioners. However, for use in electric buses, a dual working chamber sliding vane compressor, DC brushless motor, and inverter control system have been specially developed.
The electric air conditioner for electric buses has the compressor, evaporator, condenser and other components all integrated in one. And there is also no high and low pressure pipe between it and the engine compartment, so it is easier to arrange compared with the air conditioning system on conventional fuel buses, which also usually adopts the overhead arrangement.

TKT bus air conditioner 3D design drawing

Electric Bus Air Conditioner arrangement scheme

The electric air conditioner of electric bus integrates components such as a compressor, evaporator, and condenser. It is easier to arrange than the air conditioning system on traditional fuel buses. According to the distribution of the load on the front and rear wheels, the length of the high and low pressure pipes, the arrangement of the control circuit and the location of the air outlet and return air outlet, and considering the relative positions of other equipment on the roof. The top-mounted type can be divided into front-mounted, middle-mounted and rear-mounted.

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Important Information

TKT has been fully developing air conditioning equipment with pure electric drive technology since , addressing in turn:

1, The vibration and shock resistance of each component in the pure electric system.
more rapid cooling and refrigeration functions.
2, Safety controllability for electric compressors.
3, Uniform and reasonable distribution of airflow.
4, Provide OEM service, for different types of buses, we provide customized service.
5, With rich OEM experience. We have OEM service with TATA, a world top 500 company, for hundreds of buses.

TKT HVAC - Top 1 Bus A/C manufacturer in China

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There are many things to consider when adding electric school buses to your fleet, but at the top of the list is how to charge them. The two basic types of chargers are AC and DC chargers and the difference between them comes down to five principles. Here are the fives things to know when choosing an AC vs. DC charger:

1. CHARGE TIME: DC fast-chargers take just a little over three hours to completely charge a Jouley electric school bus. That&#;s significantly faster than an AC charger that would take 8-10 hours. You don&#;t want your bus on the charger longer than it&#;s on the road. Faster charge times means you don&#;t have an operations headache when there are early dismissals, longer or doubled routes, and other unexpected demands.
2. DEMAND CHARGES: Energy is generally cheaper during low-use times, such as late night/early morning (managed charge times), and more expensive during peak use, such as late afternoon/early evening (demand charges). Demand charges can quickly cancel fuel savings from electric buses. DC chargers&#; shorter charge times ensures fleets can limit charging to periods when rates are cheapest.
3. BATTERY HEALTH: In order to preserve battery health, your bus battery needs to be engineered to accommodate higher-powered current from DC-chargers. The Jouley electric school bus has specific battery chemistry designed to accept higher DC charge and discharge rates and also has the longest standard warranty of any battery on the market.
4. V2G OPPORTUNITIES: School districts can generate revenue and savings by partnering with utility companies on V2G programs. When school divisions aren&#;t using the buses for operations, especially during summer months, the energy stored on the buses&#; batteries can supply the grid during peak hours. DC chargers offer bi-directional V2G power flow while AC chargers do not.
5. PURCHASE PRICE: Higher power, larger chargers do require a larger investment. Our charging partner, Proterra, offers turn-key solutions for implementing the best charging infrastructure installation for your bus depot.

AC vs DC, level 2 or 3, V2G capabilities or not &#; you&#;ve certainly heard all these options and may have questions about what best accommodates operational needs and your specific electric bus. Incentives and grants through the Dominion Energy Electric School Bus Program and the DEQ Clean School Bus Program make electric school buses a real possibility for Virginia school districts. Our team is here to help you navigate not only choosing the best charger but also these programs and how you can purchase Jouley the electric school bus for your fleet.

Contact us to discuss your requirements of electric bus ac. Our experienced sales team can help you identify the options that best suit your needs.