Roof Mounted Bus Air Conditioning System

Songz offers a wide range of fully automatic modular climate control systems with a variety of options. These high-performance units provide a highly comfortable climate for all types of buses (school buses, coaches, commercial vehicles, shuttles and transit buses).

ESD series new energy bus air conditioning is a kind of roof mounted air conditioner, with different models to apply for the electric buses from 8m to 12m. The ESD series supports with various optional technology, like the Cloud control technology, the high-voltage connection anti-loosening technology, the roof unit integrated battery thermal management system(BTMS) technology, the vehicle thermal management technology, the DC750 high voltage technology, the Condensation water reduction technology, the air purifier technology inside the bus and the energy-saving aluminum alloy compressor.

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Features

Compact design allows for easy installation on a wide range of large and medium-sized buses

High thermodynamic efficiency in relation to the overall dimensions of the bus air conditioner

Durable, ultra-high quality components for a long service life.

Overall lightweight and aerodynamic design for low cost and low fuel consumption

Enhanced corrosion resistance of key components to meet long-term operation in humid environments.

Easy to install with low maintenance requirements

For perfect climate control, heating function is also available (optional).

Main Applications

Roof Mounted Bus Air Conditioning System is suitable for all kinds of large and medium-sized buses. It ranges from large buses with up to 60 seats to city buses, BRT buses, intercity buses, school buses and group buses as well as buses for tourism and long-distance transportation industries.

Intelligent modular platform design (SONGZ SIEMA3 platform), which realizes modular design and combination of compressor, electrical control, condenser and evaporator, integrated thermal management system and etc. The product design is efficient and reliable, and the generalization rate of platform product spare parts can reach 72% .

1. The input power voltage of the air conditioner can adapt to DC250-DC750V, and the control voltage is DC24V (DC20-DC28.8).  ESD series is not suitable for the trolleybus.

2. The refrigerant is R407C.

3. The fan is DC motor.

4. Integrated battery thermal management options:

The charging outlet water temperature is 7℃-15℃, the discharging outlet water temperature is 11℃-20℃, charging ≤10Kw, discharging ≤1-3Kw, the compressor needs to use Highly compressor.

1.Intelligent modular platform design (SONGZ SIEMA3  platform), realizes modular combination of compressor unit, electric control system, throttling system, evaporator, condenser, etc., and the design is efficient and reliable.

2.Lightweight design, aluminum alloy bottom shell design, partial hollow design of condenser, compressor and control cavity, aluminum integrated compressor, 30% lighter.

3.The overall roof design of the air-conditioning unit has less connections, less fixation, small size, and beautiful appearance; the windward layout makes full use of the driving wind of the passenger cabin to improve the energy efficiency of product operation.

4. The top mount adopts the unique noise reduction and system integration design of secondary shock absorption. Among all platforms, this platform has the lowest noise, the best system and the highest energy efficiency ratio.

5. The EMC of the product meets the requirements of GB/T 18655 level 3, and the system adopts independent intellectual property rights insulation design, which is safe and reliable, and has passed EU standard certification.

6. The compressor adopts DC frequency conversion (permanent magnet synchronous) technology, combined with adaptive frequency conversion control, high-end products are equipped with electronic expansion valves, precise control, energy saving, comfortable and environmentally friendly.

7.The electric control adopts an all-in-one design, which effectively reduces the space occupied by the electrical layout, and the wiring harness design is beautiful.

8. Integrated battery thermal management function, outputting 3-10kw battery cooling capacity according to customer requirements without affecting the cooling effect of the vehicle.

9.Air purification function, including four functions: electrostatic dust collection, ultraviolet light, strong ion generator, and photo catalyst filtration, to achieve sterilization, odor removal and efficient dust removal, and effectively block the transmission of viruses.

10. "Cloud control" function, realize remote control and diagnosis, and improve product service and monitoring capabilities through big data application.

11. PTC electric heating, according to different configurations and ambient temperature, start PTC in time, assist heating, and realize heating in the full temperature range.