Electric bus air conditioner

EZDS series electric bus A/C

Compact, rooftop, electric, energy saving

EZDS is a rooftop DC electric bus air conditioner driven directly by battery for 6 to 12m without DC-AC converter, cooling capacity from14000 to 32000 kcal/h, heat capacity from 12000 to 30000 kcal/h. Working stably from -20℃~50℃ with heat pump technology

City Bus
Intercity Bus
Coach
School Bus

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Technical Data sheet

Model	EZDD-04	EZDS-04	EZDS-05	EZDS-06
Vehicle Length	6-7m	7-9m	8-10m	11-12m
Cooling Capacity（kcal/h)	13000	24000	28000	32000
Heat Capacity（kcal/h)	11000	22000	26000	30000
Evaporator Airflow（m³/h)	4000	4000	6000	6000
HV platform (V)	400-750	400-750	400-750	400-750
LV platform (V)	24	24	24	24
DC-DC module	Integrated	Integrated	Integrated	Integrated
Compressor	EVS-34	2*EVS-34	2*EVS-34	2*EVS-34
Size（mm) LxWxH	27001630240	25001920270	27501920270	30001920270
Refrigerant charged (kg)	3.2	2.2*2	2.5*2	3.0*2
Photos:
Note: 1. Compressor Brand: HIGHLY 2. Danfoss electric expansion valve 3. Heat pump+ PTC heater 4. DC converter integrated for 24VDC power supply of fans & blowers 5. SPAL fans+EBM blowers 6. Refrigerant: R407c

Electric bus air conditioner, Electric bus air conditioning system, Bus A/C, Bus AC, Electric bus A/C, Bus HVAC

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SMC+LFT-D MATERIALS FOR COVER & HOUSING, ENVIRONMENTAL FRIENDLY, NO FIBER GLASS MATERIAL

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EZDS ELECTRIC BUS A/C ON YUTONG E BUS
bus air conditioner, bus air conditioning, bus A/C, bus HVAC, electric bus A/C

Our solution contains: electric A/C, electric front box, battery thermal management system, electric convectors.
convectors, heater, defroster, electric heater, bus heater

convectors, heater, defroster, electric heater, bus heater

All functions are operated on one control panel, operation can be so convenient!
battery thermal management, electric bus ac, defroster, convector

battery thermal management, electric bus ac, defroster, convector

CLING EZDS series electric A/C installation manual:
www.clingac.com/d/files/installation-procedures-of-cling-ezds-ac.pdf
Key words: BUS A/C, BUS AC, BUS AIR CONDITIONER, BUS AIR CONDITIONING SYSTEM, ELECTRIC BUS A/C, ELECTRIC BUS AIR CONDITIONER, E BUS A/C

Features

Efficient

With DC Variable-frequency compressor and brushless low voltage DC fan, efficiency improved.
Reliable

All components selected reaching passenger car level, power module, compressor etc all with IP67 Level, Complete pressure, temperature, undervoltage, overvoltage, short circuit, phase loss, overcurrent, multiple insulations protection, EMC meeting european standards with E-Mark.
Advanced

Stable heating under ﹣20°C through low temperature heat pump.
Intelligent

With advanced PI Variable-frequency control, stepless regulation according to the temperature inside and outside, energy saving 15%; Smart CAN control, communication with the bus and start or stop the air conditioner according to bus demand, extending battery lifecycle.
Ultralight

EZDS-06 with length less than 3m, 7.5 kg compressor, total weight less than 300kg, 30% ligther than others.
Quiet

With DC brushless fan and soundproof materials, noise level reduced more than 2dB.

Keywords: electric bus air conditioner, electric bus air conditioning system, bus A/C, bus AC, electric bus A/C

Refrigerant flow chart and working theory

Refrigerant flow chart and working theory

Cooling:

At cooling mode，the liquid refrigerant absorbs heat and vaporizes, becoming LP, LT steam, and goes into compressor, and gets compressed into HT, HP gas, then moves through 4 way valve, then into condenser to lose heat, it becomes mid pressure, LT liquid, then throttled by expansion valve, loses pressure, then goes into evaporator to vaporize. Such loop goes on and on.

heating and cooling, bus hvac, heat pump, electric A/C

Heating:

At heating mode, the compressed HP,HT gas refrigerant goes into bus evaporator to release heat, becoming mid

pressure LT liquid, then throttled by expansion valve, becoming LT,LP liquid and vaporizes in the condenser to change into gas refrigerant, and goes into compressor again. The loop continues.

L/HP: low/high pressure

L/HT: low/high temperature

References

Bus Air Conditioner on Yutong electric bus
Bus Air Conditioner on Yutong electric bus
Bus Air Conditioner on Yutong electric bus